TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Gas chromatography-mass spectrometry(GC-MS) is one of the so-called hyphenated analytical techniques. It is actually two techniques that are combined to form a single method for analyzing mixtures of organic chemicals. Gas chromatography separates the components of a mixture, and mass spectrometry characterizes each of the components individually. The combination of the two techniques allows for both qualitative and quantitative evaluations of a sample containing a number of organic compounds. The uses for GC-MS are numerous, including chemical, geological, environmental, and forensic research.  5, record 1, English, - gas%20chromatography%2Dmass%20spectrometry

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

[...] technique d'analyse qui combine les performances de la chromatographie en phase gazeuse, pour la séparation des composés d'un échantillon, et de la spectrométrie de masse, pour la détection et l'identification des composés en fonction de leur rapport masse sur charge. Cette technique permet d'identifier et/ou de quantifier précisément de nombreuses substances présentes en très petites quantités, voire en traces. Les applications de la CPG-SM comprennent le dosage de médicaments ou de stupéfiants, l'analyse environnementale, la médecine légale et l'identification de toutes substances inconnues même sous forme de traces.  2, record 1, French, - chromatographie%20en%20phase%20gazeuse%20coupl%C3%A9e%20%C3%A0%20la%20spectrom%C3%A9trie%20de%20masse

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

GC is a common type of chromatography often used in chemical separations and analysis. GC can be defined as a chromatographic method in which the mobile phase is a gas.  5, record 2, English, - gas%20chromatography

Record number: 2, Textual support number: 1 OBS

In gas chromatography, the stationary phase can either be liquid or solid.  6, record 2, English, - gas%20chromatography

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

La CPG est une méthode de séparation sur colonne de substances volatiles (ou rendues volatiles) véhiculées par un gaz inerte appelé gaz vecteur.  5, record 2, French, - chromatographie%20en%20phase%20gazeuse

Record number: 2, Textual support number: 1 OBS

Dans la chromatographie en phase gazeuse, la phase stationnaire peut être liquide ou gazeuse.  6, record 2, French, - chromatographie%20en%20phase%20gazeuse

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Sistema de separación de los componentes de una mezcla entre sí por volatilización de la muestra en una corriente de gas portador.  3, record 2, Spanish, - cromatograf%C3%ADa%20de%20gases

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Chiral chromatography is used to separate enantiomers (mirror-image isomers).  2, record 3, English, - chiral%20chromatography

Record number: 3, Textual support number: 1 OBS

The mobile phase can be a gas or liquid giving rise to chiral gas chromatography and chiral liquid chromatography. For any chiral separation, the stationary phase must be chosen so that the spatial arrangement of its composite atoms increases the probability or proximity of interaction differing significantly between the two enantiomers to be separated.  3, record 3, English, - chiral%20chromatography

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

La chromatographie chirale est préconisée pour dissocier deux énantiomères aux propriétés différentes.  2, record 3, French, - chromatographie%20chirale

Record number: 3, Textual support number: 2 CONT

En chromatographie chirale, on distingue les séparations réalisées en mode direct (le sélecteur chiral est fixé à la phase stationnaire) et en mode indirect si le sélecteur chiral est ajouté à l'échantillon ou à la phase mobile [...]  3, record 3, French, - chromatographie%20chirale

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

... a test that detects alkali volatilizable amines in vaginal fluid.  3, record 4, English, - amines%20test

Record number: 4, Textual support number: 1 OBS

The presence of alkali volatilizable amines is one of the diagnostic criteria for bacterial vaginosis.  4, record 4, English, - amines%20test

Record number: 4, Textual support number: 2 OBS

Amines tests have been developed as practical substitutes to the highly subjective whiff test and costly analytical procedures such as high voltage electrophoresis, thin-layer chromotography and gas chromatography.  4, record 4, English, - amines%20test

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Test utilisé pour déterminer la présence d'amines dans les sécrétions vaginales.  2, record 4, French, - test%20amin%C3%A9

Record number: 4, Textual support number: 1 OBS

La présence d'amines dans les sécrétions vaginales constitue l'un des critères diagnostiques de la vaginose bactérienne.  2, record 4, French, - test%20amin%C3%A9

Record number: 4, Textual support number: 2 OBS

Le test aminé est un test simple et économique (par opposition aux techniques comme la chromatographie sur couche mince et la chromatographie en phase gazeuse) qui est plus précis et moins subjectif que le test à la potasse («whiff test»).  2, record 4, French, - test%20amin%C3%A9

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

[The method] was innovative in that it involved the concept of a stationary liquid (water) supported on an inert solid (silica), with the result that the solute molecules partitioned between the stationary liquid and a separate mobile liquid phase (chloroform). The technique came to be called partition chromatography.  2, record 5, English, - partition%20chromatography

Record number: 5, Textual support number: 1 OBS

The separation of a mixture occurs when a mobile phase(liquid or gas) passes over a stationary liquid phase which may be on paper, solid particles or the walls of a capillary tube. Partition processes include liquid-liquid, gas-liquid and paper chromatography.  3, record 5, English, - partition%20chromatography

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

La chromatographie de partage repose sur la différence de solubilité des constituants de la phase mobile dans deux solvants non miscibles entre eux. Les phrases fixes les plus couramment employées sont l'alumine, le gel de silice, le carbone actif, et le papier [...]  3, record 5, French, - chromatographie%20de%20partage

Record number: 5, Textual support number: 2 CONT

La chromatographie de partage [...] a d'abord été utilisée pour la séparation des aminoacides [...] et a été depuis appliquée à des problèmes de séparation de différentes substances. La séparation est effectuée dans un nombre immense d'étapes de partage isolées, chacune de dimension microscopique dans une colonne (10 à 100 cm de longueur) remplie de grains d'une substance hydratée, insoluble et inerte, comme l'amidon ou le gel de silice. Les grains d'amidon ou de gel de silice sont hydrophiles et sont entourés par une phase d'eau finement liée, qui sert de phase stationnaire aqueuse à travers laquelle passe un flux de solvant non miscible qui traverse la colonne par gravité. Chaque grain d'amidon agit ainsi comme un séparateur microscopique.  4, record 5, French, - chromatographie%20de%20partage

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Técnica analítica de separación, mediante dos fases líquidas parcialmente miscibles, en la que una queda fijada por agua absorbida en gel de sílice.  3, record 5, Spanish, - cromatograf%C3%ADa%20de%20partici%C3%B3n

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Pyrolysis gas chromatography mass spectrometry. Pyrolysis gas chromatography, combined predominantly with mass spectrometry, is a powerful analytical method for the categorization of polymers. Moreover, it is useful for the characterization of monomers, comonomers, additives, and impurities.  2, record 6, English, - pyrolysis%2Dgas%20chromatography%2Dmass%20spectrometry

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

Subgroup of volatile organic compounds ... that tend to have a higher molecular weight and higher boiling point temperature.  4, record 7, English, - semi%2Dvolatile%20organic%20compound

Record number: 7, Textual support number: 1 CONT

Semivolatile organic compounds(SVOCs)... are of concern because of their abundance in the indoor environment and their potential for negative health effects on humans. … The concentrations of semi-volatile organic compounds … are determined by extracting the sample and then analyzing the extract using gas chromatography and mass spectrometry...  3, record 7, English, - semi%2Dvolatile%20organic%20compound

Record number: 7, Textual support number: 1 OBS

semi-volatile organic compound; SVOC: designation and abbreviation standardized by ISO in 2020.  5, record 7, English, - semi%2Dvolatile%20organic%20compound

Record number: 7, Textual support number: 2 OBS

semi-volatile organic compound: term adopted by Environment Canada; used in the list of pollutants measured in the National Air Pollution Surveillance Network (NAPS).  6, record 7, English, - semi%2Dvolatile%20organic%20compound

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Sous-groupe de composés organiques volatils […] qui a tendance à posséder une masse moléculaire plus importante et une température de point d'ébullition supérieure.  2, record 7, French, - compos%C3%A9%20organique%20semi%2Dvolatil

Record number: 7, Textual support number: 1 OBS

composé organique semi-volatil; COSV : désignation et abréviation normalisées par l'ISO en 2020.  4, record 7, French, - compos%C3%A9%20organique%20semi%2Dvolatil

Record number: 7, Textual support number: 2 OBS

composé organique semi-volatil : terme retenu par Environnement Canada; utilisé dans la liste des polluants mesurés par le Réseau national de surveillance de la pollution atmosphérique (RNSPA).  5, record 7, French, - compos%C3%A9%20organique%20semi%2Dvolatil

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

A detector that uses a reducing flame in which individual elements give rise to characteristic colours that are measured by a photomultiplier.  4, record 8, English, - flame%20photometric%20detector

Record number: 8, Textual support number: 1 CONT

The flame photometric detector (FPD) measures the fluorescence emission of hetero atoms of organic molecules subjected to combustion.  5, record 8, English, - flame%20photometric%20detector

Record number: 8, Textual support number: 1 OBS

The detector is used in gas chromatography mainly to detect components that contain particular elements, e. g. phosphorous(P) and sulfur(S).  4, record 8, English, - flame%20photometric%20detector

Record number: 8, Textual support number: 2 OBS

flame photometric detector: term and definition standardized by ISO in 2014.  6, record 8, English, - flame%20photometric%20detector

Record number: 8, Textual support number: 1 PHR

continuous flame photometric detector, pulsed flame photometric detector  7, record 8, English, - flame%20photometric%20detector

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Détecteur utilisant une flamme réductrice dans laquelle les éléments émettent une couleur caractéristique qui est mesurée par un photomultiplicateur.  2, record 8, French, - d%C3%A9tecteur%20%C3%A0%20photom%C3%A9trie%20de%20flamme

Record number: 8, Textual support number: 1 OBS

Le détecteur est utilisé en chromatographie en phase gazeuse pour détecter plus particulièrement les constituants renfermant des éléments particuliers, comme par exemple, le phosphore (P) et le soufre (S).  2, record 8, French, - d%C3%A9tecteur%20%C3%A0%20photom%C3%A9trie%20de%20flamme

Record number: 8, Textual support number: 2 OBS

détecteur à photométrie de flamme : terme et définition normalisés par l'ISO en 2014.  3, record 8, French, - d%C3%A9tecteur%20%C3%A0%20photom%C3%A9trie%20de%20flamme

Record number: 8, Textual support number: 1 PHR

détecteur à photométrie de flamme pulsée, détecteur à photométrie de flamme soufre-phosphore  4, record 8, French, - d%C3%A9tecteur%20%C3%A0%20photom%C3%A9trie%20de%20flamme

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

A detector in which hydrocarbons are burned in a hydrogen-air flame and the electrical current caused by the resulting ions is measured between two electrodes. [Definition standardized by ISO in 2014.]  5, record 9, English, - flame%20ionization%20detector

Record number: 9, Textual support number: 2 DEF

A hydrogen-air diffusion flame detector that produces a signal nominally proportional to the mass-flow rate of hydrocarbons entering the flame per unit of time - generally assumed responsive to the number of carbon atoms entering the flame. [Definition officially approved by ICAO.]  6, record 9, English, - flame%20ionization%20detector

Record number: 9, Textual support number: 1 OBS

The flame ionization detector is used in gas chromatography mainly to detect hydrocarbon compounds.  5, record 9, English, - flame%20ionization%20detector

Record number: 9, Textual support number: 2 OBS

flame ionization detector; FID: term and abbreviation standardized by ISO in 2014.  7, record 9, English, - flame%20ionization%20detector

Record number: 9, Textual support number: 3 OBS

flame ionization detector; FI-detector: terms extracted from the "Disarmament and Peace Keeping" glossary with the permission of the United Nations Office at Geneva.  8, record 9, English, - flame%20ionization%20detector

Record number: 9, Textual support number: 4 OBS

flame ionization detector; FID: term and abbreviation officially approved by the International Civil Aviation Organization (ICAO).  9, record 9, English, - flame%20ionization%20detector

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Détecteur dans lequel les ions résultant de la combustion des hydrocarbures dans une flamme air/hydrogène sont mesurés électriquement entre deux électrodes.  2, record 9, French, - d%C3%A9tecteur%20%C3%A0%20ionisation%20de%20flamme

Record number: 9, Textual support number: 1 OBS

Le détecteur à ionisation de flamme est utilisé en chromatographie en phase gazeuse pour détecter plus particulièrement les composés hydrocarbonés.  2, record 9, French, - d%C3%A9tecteur%20%C3%A0%20ionisation%20de%20flamme

Record number: 9, Textual support number: 2 OBS

détecteur à ionisation de flamme; FID : terme, abréviation et définition normalisés par l'ISO en 2014.  6, record 9, French, - d%C3%A9tecteur%20%C3%A0%20ionisation%20de%20flamme

Record number: 9, Textual support number: 3 OBS

détecteur à ionisation de flamme; détecteur FI : termes tirés du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  7, record 9, French, - d%C3%A9tecteur%20%C3%A0%20ionisation%20de%20flamme

Record number: 9, Textual support number: 4 OBS

détecteur à ionisation de flamme : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).  8, record 9, French, - d%C3%A9tecteur%20%C3%A0%20ionisation%20de%20flamme

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Dispositivo en el que el cambio medido de la conductividad de una llama patrón (generalmente de hidrógeno) debido a la introducción de otro gas o vapor, se utiliza para detectar dicho gas o vapor.  4, record 9, Spanish, - detector%20de%20ionizaci%C3%B3n%20de%20llama

Record number: 9, Textual support number: 1 CONT

El detector de ionización de llama (Abreviadamente DILL) es otro de los detectores más populares y sensibles. Su detectabilidad puede ser unas mil veces más baja que el de conductividad térmica.  2, record 9, Spanish, - detector%20de%20ionizaci%C3%B3n%20de%20llama

Record number: 9, Textual support number: 1 OBS

detector de ionización de la llama; detector de la ionización de la llama; FID: término y abreviatura aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).  5, record 9, Spanish, - detector%20de%20ionizaci%C3%B3n%20de%20llama

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

auxiliary gases: The gases required for detector operation, e.g. hydrogen and air for flame detectors.  1, record 10, English, - auxiliary%20gas

Record number: 10, Textual support number: 1 OBS

Gas chromatography.  2, record 10, English, - auxiliary%20gas

Record number: 10, Textual support number: 2 OBS

auxiliary gas: The plural form of this term (auxiliary gases) and the plural definition were standardized by ISO in 2014.  2, record 10, English, - auxiliary%20gas

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 DEF

Gaz nécessaire pour faire fonctionner le détecteur, par exemple l’hydrogène et l’air pour les détecteurs à flamme.  1, record 10, French, - gaz%20auxiliaire

Record number: 10, Textual support number: 1 OBS

Chromatographie en phase gazeuse.  2, record 10, French, - gaz%20auxiliaire

Record number: 10, Textual support number: 2 OBS

gaz auxiliaire : terme et définition normalisés par l'ISO en 2014.  2, record 10, French, - gaz%20auxiliaire

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

A detector that uses a reducing reaction in which molecules give rise to characteristic luminous emissions that are measured by a photomultiplier and the associated electronic devices.  1, record 11, English, - chemiluminescence%20detector

Record number: 11, Textual support number: 1 OBS

A chemiluminescence detector is used in gas chromatography mainly to detect components that contain particular elements, e. g. nitrogen(N) and sulfur(S).  1, record 11, English, - chemiluminescence%20detector

Record number: 11, Textual support number: 2 OBS

chemiluminescence detector: term and definition standardized by ISO in 2014.  2, record 11, English, - chemiluminescence%20detector

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 DEF

Détecteur qui utilise une réaction de réduction dans laquelle des molécules émettent des rayons lumineux caractéristiques que mesurent un photomultiplicateur et les dispositifs électroniques associés.  1, record 11, French, - d%C3%A9tecteur%20%C3%A0%20chimiluminescence

Record number: 11, Textual support number: 1 OBS

Le détecteur à chimiluminescence est utilisé en chromatographie en phase gazeuse principalement pour détecter des constituants contenant des éléments particuliers, comme par exemple, l’azote (N) et le soufre (S).  2, record 11, French, - d%C3%A9tecteur%20%C3%A0%20chimiluminescence

Record number: 11, Textual support number: 2 OBS

détecteur à chimiluminescence : terme et définition normalisés par l'ISO en 2014.  2, record 11, French, - d%C3%A9tecteur%20%C3%A0%20chimiluminescence

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

A method by which a ... sample undergoes total combustion and the specific combustion products are measured to determine the total concentration of an element in the sample, e.g. sulfur.  2, record 12, English, - combustion%20method

Record number: 12, Textual support number: 1 CONT

The available standardized methods in the field of sulfur analysis are the Wickbold combustion method for total sulfur determination(ISO 4260) ;the Lingener combustion method for total sulfur determination(ISO 6326-5) ;gas chromatography for determination of individual sulfur compounds(ISO 19739) ;potentiometry for determination of hydrogen sulfide, carbonyl sulfide and thiol compounds(ISO 6326-3).  3, record 12, English, - combustion%20method

Record number: 12, Textual support number: 1 OBS

combustion method: term standardized by ISO in 2014.  4, record 12, English, - combustion%20method

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 DEF

Méthode permettant de déterminer, par combustion complète de l’échantillon et mesurage des produits spécifiques de combustion, la concentration totale d’un élément de l’échantillon, par exemple le soufre.  3, record 12, French, - m%C3%A9thode%20par%20combustion

Record number: 12, Textual support number: 1 CONT

Les méthodes normalisées disponibles pour la détermination du soufre sont la méthode de combustion Wickbold, pour la détermination du soufre total (ISO 4260); la méthode de combustion Lingener, pour la détermination du soufre total (ISO 6326-5); la chromatographie en phase gazeuse, pour la détermination des composés soufrés individuels (ISO 19739); et la potentiométrie, pour la détermination du sulfure d'hydrogène, du sulfure de carbonyle et des thiols (ISO 6326-3).  4, record 12, French, - m%C3%A9thode%20par%20combustion

Record number: 12, Textual support number: 1 OBS

méthode par combustion : terme et définition normalisés par l'ISO en 2014.  5, record 12, French, - m%C3%A9thode%20par%20combustion

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

A method of analysis by which the components of a gas mixture are separated using gas chromatography.  1, record 13, English, - gas%20chromatographic%20method

Record number: 13, Textual support number: 1 OBS

The sample is passed in a stream of carrier gas through a column that has different retention properties relative to the components of interest. Different components pass through the column at different rates and are detected as they elute from the column at different times.  1, record 13, English, - gas%20chromatographic%20method

Record number: 13, Textual support number: 2 OBS

gas chromatographic method: term and definition standardized by ISO in 2014.  2, record 13, English, - gas%20chromatographic%20method

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Méthode d’analyse qui utilise la chromatographie en phase gazeuse pour séparer les constituants d’un mélange de gaz.  1, record 13, French, - m%C3%A9thode%20par%20chromatographie%20en%20phase%20gazeuse

Record number: 13, Textual support number: 1 OBS

L’échantillon passe, dans un flux de gaz vecteur, à travers une colonne qui retient sélectivement les constituants recherchés. Les constituants transitent dans la colonne à des vitesses différentes et sont détectés lors de leur élution progressive en des temps différents.  1, record 13, French, - m%C3%A9thode%20par%20chromatographie%20en%20phase%20gazeuse

Record number: 13, Textual support number: 2 OBS

méthode par chromatographie en phase gazeuse : terme et définition normalisés par l'ISO en 2014.  2, record 13, French, - m%C3%A9thode%20par%20chromatographie%20en%20phase%20gazeuse

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

The research scientist using GC [gas chromatography] as an analytical tool, while technically competent, may not be a highly skilled chromatographer.  2, record 14, English, - chromatographer

Record number: 14, Textual support number: 2 CONT

Time-shared computers can do a lot for the chromatographer - at lower and lower cost - by relieving him from a growing burden of computation. Until now, few laboratories have taken advantage of time-sharing services for GC applications because of the difficulty of programming the computer.  2, record 14, English, - chromatographer

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 CONT

Plus encore pour la chromatographie industrielle que pour celle de laboratoire, le chromatographiste s'efforcera de mettre à profit cet aspect de distillation extractive pour accentuer les séparations dans tous les cas possibles, mais surtout dans le cas d'analyse de traces.  3, record 14, French, - chromatographiste

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

Oil match analyses include :-collecting samples from all possible sources; collecting samples from the receiving environment; analyzing samples in a laboratory by gas chromatography, or other methods; obtaining results which provide a finger print for matching.  1, record 15, English, - finger%20print%20for%20matching

Record number: 15, Textual support number: 1 OBS

See also "oil match analysis" and "chemical fingerprint" in TERMIUM.  2, record 15, English, - finger%20print%20for%20matching

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 OBS

Vise à permettre l'identification et la provenance d'un brut ayant causé une pollution.  2, record 15, French, - empreinte%20permettant%20l%27appariement%20d%27%C3%A9chantillons%20d%27hydrocarbures

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 OBS

Tradename for polyethylene glycols and methoxypolyethylene glycol porous polymer resins; they are available in various molecular weights and are used as liquid phase support coatings in gas chromatography.  2, record 16, English, - Carbowax%C2%AE

Record number: 16, Textual support number: 2 OBS

Use: Water-soluble lubricants, solvents for dyes, resins, proteins; plasticizers ...; cosmetics and pharmaceuticals ...  3, record 16, English, - Carbowax%C2%AE

Record number: 16, Textual support number: 3 OBS

Carbowax®: A trademark of Union Carbide Corp.  4, record 16, English, - Carbowax%C2%AE

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 OBS

Nom de commerce de résines poreuses à base de polyéthylèneglycol et de méthoxy-polyéthylèneglycol; elles sont vendues en différentes masses moléculaires [...] et sont utilisées comme revêtement du support de phase liquide en chromatographie gazeuse.  1, record 16, French, - Carbowax

Record number: 16, Textual support number: 2 OBS

Nom générique de divers polyglycols employés comme excipients en pharmacie et en cosmétique.  2, record 16, French, - Carbowax

Record number: 16, Textual support number: 3 OBS

Carbowax® : Marque de commerce de la société Union Carbide Corp.  2, record 16, French, - Carbowax

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 DEF

A technique which is used in gas chromatography to increase the rate of elution of highly sorbed species and to decrease the running time for chromatograms.  2, record 17, English, - temperature%20programming

Record 17,  Textual support,  French

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 OBS

Since there is a pressure gradient along the length of the GC [gas chromatography] columns, calculation of retention parameters must frequently include a correction(j). Using this factor, the corrected retention time is obtained by multiplying the retention time by j...  1, record 18, English, - corrected%20retention%20time

Record 18,  Textual support,  French

Record 18,  Textual support,  Spanish

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 DEF

A detector that responds to changes in either the dielectric constant of a radio-frequency plasma or the potential difference between capacitor plates arising from variations in the composition of the carrier gas as solutes are eluted from the gas chromatography [GC] column.  2, record 19, English, - radio%2Dfrequency%20detector

Record 19,  Textual support,  French

Record 19,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 DEF

A detector in which eluates from GC [gas chromatography] are directly weighed on a microbalance.  2, record 20, English, - mass%20detector

Record number: 20, Textual support number: 1 OBS

A small cylindrical chamber, containing active charcoal, is attached to the microbalance on to which the eluate is adsorbed. The response is a function of the weight of the material adsorbed by the charcoal, the device acting as an integral detector.  2, record 20, English, - mass%20detector

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 PHR

Détecteur de masse à piégeage d'ions.  2, record 20, French, - d%C3%A9tecteur%20de%20masse

Record 20,  Textual support,  Spanish

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 DEF

Quantitative detection for GC [gas chromatography] can be achieved by coulometry on a nonselective basis; components are pyrolysed to carbon dioxide which is measured in a coulometer.  2, record 21, English, - coulometric%20detector

Record number: 21, Textual support number: 1 OBS

Sophisticated coulometric detectors, selected for nitrogen, sulphur and halogens, have been developed. Products are passed into a furnace at 800°C and the ammonium compounds, acids or sulphur dioxide produced are then measured coulometrically in an electrolytic cell.  2, record 21, English, - coulometric%20detector

Record 21,  Textual support,  French

Record number: 21, Textual support number: 1 CONT

On peut, a priori, utiliser deux méthodes pour réaliser un détecteur électrochimique : - soit s'efforcer de réaliser une électrolyse totale du soluté lors de son passage dans la cellule d'électrolyse [...] : le détecteur est dit coulométrique; il nécessite une grande surface de contact entre le soluté et l'électrode, ce qui implique d'utiliser des électrodes poreuses traversées par l'effluent, permettant d'obtenir un rapport surface/volume très élevé; soit effectuer une électrolyse partielle ne transformant qu'une fraction du soluté (< 10 %) lors de son passage dans la cellule [...]  2, record 21, French, - d%C3%A9tecteur%20coulom%C3%A9trique

Record number: 21, Textual support number: 1 OBS

On peut classer les détecteurs électrochimiques en deux catégories : les détecteurs coulométriques [...] qui, en raison de leur volume mort trop important, sont mal adaptés à la chromatographie en phase liquide, et les détecteurs ampérométriques qui n'effectuent qu'une électrolyse partielle du soluté.  3, record 21, French, - d%C3%A9tecteur%20coulom%C3%A9trique

Record 21,  Textual support,  Spanish

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 DEF

A detector in which organic material eluted from a GC [gas chromatography] column is combusted in excess oxygen.  3, record 22, English, - electrolytic%20conductivity%20detector

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 CONT

[...] un détecteur à conductibilité électrolytique pour déterminer les molécules isotopiques de l'hydrogène [...]  1, record 22, French, - d%C3%A9tecteur%20%C3%A0%20conductibilit%C3%A9%20%C3%A9lectrolytique

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 DEF

A device, most often used in gas chromatography, which consists of a wire filament that can be rapidly heated by high frequency induction heating to a fixed temperature(between 250 and 800 °C), within 0. 02-0. 03 s to give reproducible thermal decomposition of samples deposited as thin coatings on the wire.  1, record 23, English, - pyrolizer

Record 23,  Textual support,  French

Record 23,  Textual support,  Spanish

Record 24,  Textual support,  English

Record number: 24, Textual support number: 1 DEF

A procedure for chromatographic separation in which the mobile phase is passed through the chromatographic bed after the application on the sample.  2, record 24, English, - elution%20chromatography

Record number: 24, Textual support number: 1 OBS

The mixture is applied at the head of the column or as a spot on paper and thin layer. On the chromatogram thus developed, the solutes give either separate spots as in paper chromatography and thin-layer chromatography or a series of peaks on a chart as in gas chromatography and high-performance liquid chromatography.  3, record 24, English, - elution%20chromatography

Record 24,  Textual support,  French

Record number: 24, Textual support number: 1 DEF

Méthode de séparation chromatographique dans laquelle un éluant percole à travers le lit chromatographique après introduction de l'échantillon.  4, record 24, French, - chromatographie%20d%27%C3%A9lution

Record number: 24, Textual support number: 1 CONT

Que ce soit sur papier ou sur couche mince, on peut opérer les séparations suivant deux dimensions (axes de migration rectangulaires), mais la chromatographie sur couche mince est susceptible de variantes basées sur l'effet d'un gradient de composition du substrat (chromatographie à gradient d'élution), et même sur l'introduction de pressions assez importantes pour faire cheminer le véhicule liquide.  3, record 24, French, - chromatographie%20d%27%C3%A9lution

Record 24,  Textual support,  Spanish

Record number: 24, Textual support number: 1 DEF

Cromatografía en la que se hace pasar un eluyente a través de la fase estacionaria, después de haber introducido en ella la mezcla que se va a separar.  1, record 24, Spanish, - cromatograf%C3%ADa%20de%20eluci%C3%B3n

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 DEF

A procedure in which the temperature of the column is changed systematically during a part or the whole of the separation.  3, record 25, English, - temperature%2Dprogrammed%20chromatography

Record number: 25, Textual support number: 1 PHR

Programmed temperature gas chromatography.  4, record 25, English, - temperature%2Dprogrammed%20chromatography

Record 25,  Textual support,  French

Record number: 25, Textual support number: 1 DEF

Procédé [au cours duquel] la température de la colonne est systématiquement modifiée durant une partie ou la totalité de la séparation.  3, record 25, French, - chromatographie%20%C3%A0%20temp%C3%A9rature%20programm%C3%A9e

Record number: 25, Textual support number: 1 CONT

Au lieu de maintenir la température constante dans l'enceinte, on peut l'astreindre à suivre une loi de variation donnée, généralement linéaire, pour obtenir une chromatographie à température programmée. Cela implique un système de refroidissement, qui peut être la simple ouverture de la porte du four, en fin d'analyse, pour revenir à la température de départ. On notera que, dans ce cas de programmation de température, il y a souvent un décalage entre la température affichée à un instant donné dans le four et la température réelle de la colonne.  4, record 25, French, - chromatographie%20%C3%A0%20temp%C3%A9rature%20programm%C3%A9e

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 DEF

A microporous structure composed of either crystalline aluminosilicates, chemically similar to clays and feldspars and belonging to a class of materials known as zeolites, or crystalline aluminophosphates derived from mixtures containing an organic amine or quaternary ammonium salt [whose] pore sizes range from 5 to 10 Å [and whose characteristic is its] ability to undergo dehydration with little or no change in crystalline structure.  2, record 26, English, - molecular%20sieve

Record number: 26, Textual support number: 1 CONT

The dehydrated crystals are interlaced with regularly spaced channels of molecular dimensions, which comprise almost 50% of the total volume of the crystals. ... only those molecules that are small enough to pass through the pores of the crystals can enter the cavities and be adsorbed on the interior surface. This sieving or screening action, which makes it possible to separate smaller molecules from larger ones, is the most unusual characteristic of molecular sieves.  2, record 26, English, - molecular%20sieve

Record number: 26, Textual support number: 1 OBS

[The molecular sieves] are used in many fields of technology : to dry gases and liquids, for selective molecular separations based on size and polar properties, as ion-exchangers, as catalysts, as chemical carriers, in gas chromatography, and in the petroleum industry to remove normal paraffins from distillates.  2, record 26, English, - molecular%20sieve

Record number: 26, Textual support number: 2 OBS

molecular sieve: term often used in its plural form "molecular sieves".  3, record 26, English, - molecular%20sieve

Record 26,  Textual support,  French

Record number: 26, Textual support number: 1 DEF

Substance poreuse dont les pores se laissent pénétrer par certaines molécules et pas par d'autres, jouant ainsi le rôle d'un tamis au niveau microscopique.  3, record 26, French, - tamis%20mol%C3%A9culaire

Record number: 26, Textual support number: 1 CONT

Le gaz vecteur est séché sur tamis moléculaire [...] Les billes ou bâtonnets de tamis sont introduits dans un cylindre métallique d'environ 100 ml. L'activation ainsi que les régénérations ultérieures peuvent être effectuées dans le four du chromatographe sous balayage de gaz vecteur à 300 °C pendant une nuit.  4, record 26, French, - tamis%20mol%C3%A9culaire

Record number: 26, Textual support number: 2 CONT

Les adsorbants courants sont : l'argile activée et le gel de silice activé [...]; l'alumine activée; les tamis moléculaires (silico-aluminate de soude) [...]  5, record 26, French, - tamis%20mol%C3%A9culaire

Record number: 26, Textual support number: 1 OBS

Les zéolites sont d'excellents tamis moléculaires.  3, record 26, French, - tamis%20mol%C3%A9culaire

Record number: 26, Textual support number: 2 OBS

Une caractéristique importante des zéolithes est leur tendance à se déshydrater sans changement appréciable de leur structure cristalline. Les cristaux déshydratés présentent des cavités régulièrement distribuées et reliées par des canaux moléculaires. Ceux-ci offrent une surface très étendue pour l'adsorption de molécules étrangères.  6, record 26, French, - tamis%20mol%C3%A9culaire

Record number: 26, Textual support number: 3 OBS

tamis moléculaire; crible moléculaire : termes habituellement utilisés au pluriel.  7, record 26, French, - tamis%20mol%C3%A9culaire

Record number: 26, Textual support number: 1 PHR

Colonne de tamis moléculaires.  7, record 26, French, - tamis%20mol%C3%A9culaire

Record 26,  Textual support,  Spanish

Record number: 26, Textual support number: 1 DEF

Grupo de desecantes adsorbentes aluminosilicatados cristalinos, pertenecientes al grupo mineral de las zeolitas, que sufren deshidratación sin cambio estructural.  2, record 26, Spanish, - tamiz%20molecular

Record 27,  Textual support,  English

Record number: 27, Textual support number: 1 OBS

Use : Intermediate for myristic acid detergents, emulsifiers, wetting agents, stabilizers, resins, lubricants, plasticizers, textiles, animal feeds, standard for gas chromatography, flavoring.  3, record 27, English, - methyl%20tetradecanoate

Record number: 27, Textual support number: 2 OBS

methyl tetradecanoate: form recommended by the IUPAC (International Union of Pure and Applied Chemistry) for the systematic name corresponding to the CAS number indicated on the present record.  4, record 27, English, - methyl%20tetradecanoate

Record number: 27, Textual support number: 3 OBS

n-: This prefix must be italicized.  5, record 27, English, - methyl%20tetradecanoate

Record number: 27, Textual support number: 4 OBS

Also known under the following commercial designations: AI3-01980; Metholeneat 2495; NSC-5029; Uniphat A50.  5, record 27, English, - methyl%20tetradecanoate

Record number: 27, Textual support number: 5 OBS

Chemical formula: C₁₅H₃₀O₂ or CH₃(CH₂)₁₂COOCH₃  5, record 27, English, - methyl%20tetradecanoate

Record 27,  Textual support,  French

Record number: 27, Textual support number: 1 OBS

tétradécanoate de méthyle : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée) pour le nom systématique correspondant au numéro CAS indiqué sur la présente fiche.  3, record 27, French, - t%C3%A9trad%C3%A9canoate%20de%20m%C3%A9thyle

Record number: 27, Textual support number: 2 OBS

n- : Ce préfixe s'écrit en italique.  4, record 27, French, - t%C3%A9trad%C3%A9canoate%20de%20m%C3%A9thyle

Record number: 27, Textual support number: 3 OBS

Formule chimique : C₁₅H₃₀O₂ ou CH₃(CH₂)₁₂COOCH₃  4, record 27, French, - t%C3%A9trad%C3%A9canoate%20de%20m%C3%A9thyle

Record 27,  Textual support,  Spanish

Record number: 27, Textual support number: 1 OBS

Fórmula química: C₁₅H₃₀O₂ o CH₃(CH₂)₁₂COOCH₃  2, record 27, Spanish, - meristato%20de%20metilo

Record 28,  Textual support,  English

Record number: 28, Textual support number: 1 CONT

Individual O-acyl derivatives content L-carnitine can be determined using the "radio-exchange" method or gas chromatography.  2, record 28, English, - radio%2Dexchange%20method

Record 28,  Textual support,  French

Record number: 28, Textual support number: 1 DEF

[...] méthode [des réactifs radioactifs dans laquelle] l'ion X à déterminer déplace quantitativement un autre ion Y marqué en donnant un complexe RX plus stable que le complexe RY.  1, record 28, French, - m%C3%A9thode%20d%27%C3%A9change%20radioactif

Record 28,  Textual support,  Spanish

Record 29,  Textual support,  English

Record number: 29, Textual support number: 1 CONT

TAGs [triacylglycerols] including triheneicosanoin(21 : 0/21 : 0/21 : 0-TAG; used as the internal standard in TAG determinations by GC [gas chromatography]), tripalmitin(16 : 0/16 : 0/16 : 0-TAG), triolein(18 : 1/18 : 1/18 : 1-TAG) and trilinolein(18 : 2/18 : 2/18 : 2-TAG) were purchased from Nu Chek Prep(Elysian, MN, U. S. A.).  2, record 29, English, - triheneicosanoin

Record 29,  Textual support,  French

Record number: 29, Textual support number: 1 OBS

éicosane : ce terme a été remplacé par icosane; «hen» a été remplacé par «hén», qui se prononce mieux.  1, record 29, French, - trih%C3%A9nicosano%C3%AFne

Record 29,  Textual support,  Spanish

Record 30,  Textual support,  English

Record number: 30, Textual support number: 1 CONT

Human serum contains small amounts of the precursors of cholesterol synthesis, including squalene and methylated and demethylated precursor sterols. From among the latter sterols, cholestenol, desmosterol, and lathosterol can easily be quantified by gas liquid chromatography(GLC), and the whole precursor sterol group is positively related to cholesterol synthesis. In addition, there are other noncholesterol sterols in serum, the most prominent of which are cholestanol and plant sterols(campesterol, sitosterol, and avenasterol).  2, record 30, English, - campesterol

Record 30,  Textual support,  French

Record number: 30, Textual support number: 1 CONT

Les stérols de quatre graines de crucifères originaires du Maroc ont été analysés par CPG/SM. Ces quatre graines sont le Lepidium sativum, Eruca sativa, Diplotaxis tenuisiliqua et Sinapis arvensis. Sept stérols ont été identifiés. Il s'agit du brassicastérol, campestérol, sitostérol, isofucostérol, du schotténol, de l'avénastérol et du stigmasta-5,25-dien-3bêta-ol [sic : stigmasta-5,25-dién-3ß-ol].  2, record 30, French, - campest%C3%A9rol

Record 30,  Textual support,  Spanish

Record 31,  Textual support,  English

Record number: 31, Textual support number: 1 CONT

Human serum contains small amounts of the precursors of cholesterol synthesis, including squalene and methylated and demethylated precursor sterols. From among the latter sterols, cholestenol, desmosterol, and lathosterol can easily be quantified by gas liquid chromatography(GLC), and the whole precursor sterol group is positively related to cholesterol synthesis. In addition, there are other noncholesterol sterols in serum, the most prominent of which are cholestanol and plant sterols(campesterol, sitosterol, and avenasterol).  2, record 31, English, - avenasterol

Record 31,  Textual support,  French

Record number: 31, Textual support number: 1 CONT

Les stérols de quatre graines de crucifères originaires du Maroc ont été analysés par CPG/SM. Ces quatre graines sont le Lepidium sativum, Eruca sativa, Diplotaxis tenuisiliqua et Sinapis arvensis. Sept stérols ont été identifiés. Il s'agit du brassicastérol, campestérol, sitostérol, isofucostérol, du schotténol, de l'avénastérol et du stigmasta-5,25-dien-3beta-ol [sic : stigmasta-5,25-dién-3ß-ol].  2, record 31, French, - av%C3%A9nast%C3%A9rol

Record 31,  Textual support,  Spanish

Record 32,  Textual support,  English

Record number: 32, Textual support number: 1 CONT

With a lower detection limit approaching several nanograms for sulfur or halogen, the microcoulometer is an ideal, accepted, specific detection system for gas chromatography.  3, record 32, English, - microcoulometer

Record number: 32, Textual support number: 1 OBS

Coulometer. Electrolytic cell for the measurement of quantities of electricity by quantitative determination of chemical changes; sometimes called voltameter. Coulometers are used for the determination of quantities of electricity in standardization procedures and some electroanalytical measurements.  4, record 32, English, - microcoulometer

Record 32,  Textual support,  French

Record number: 32, Textual support number: 1 DEF

Appareil permettant de mesurer de très faibles quantités d'électricité.  2, record 32, French, - microcoulom%C3%A8tre

Record 32,  Textual support,  Spanish

Record 33,  Textual support,  English

Record number: 33, Textual support number: 1 CONT

Although real-life gas chromatography analysis is a complex process depending on numerous factors such as molecular volume, chemical and physical properties, the form of the analyzed molecules, the temperature of the process, the adsorption abilities, other properties of the matrix, etc., the separation for many compounds depends on differences in boiling points.  2, record 33, English, - gas%20chromatographic%20analysis

Record 33,  Textual support,  French

Record 33,  Textual support,  Spanish

Record 34,  Textual support,  English

Record number: 34, Textual support number: 1 CONT

A sensitive flame ionization detector was developed for capillary column gas chromatography. The detector used no make-up gas and lower flow-rates of hydrogen and air to suppress detector noise and to achieve maximum response. The detector was responsive down to the 10 SUP-SUP 1 SUP 3 g level for C SUB 2-C SUB 1 SUB 1 hydrocarbons. Atmospheric hydrocarbons could be determined at parts per billion or parts per trillion levels by using gas chromatography with the detector via cryogenic concentration of a small volume of air sample.(Pascal Data Base).  2, record 34, English, - flame%20ionization

Record 34,  Textual support,  French

Record number: 34, Textual support number: 1 CONT

chromatographie à ionisation de flamme  2, record 34, French, - %C3%A0%20ionisation%20de%20flamme

Record number: 34, Textual support number: 1 OBS

Couplage de la chromatographie en phase dioxyde de carbone supercritique sur colonnes remplies avec la détection a ionisation de flamme. Applications à l'analyse des produits pétroliers. (Base de données Pascal).  3, record 34, French, - %C3%A0%20ionisation%20de%20flamme

Record 34,  Textual support,  Spanish

Record number: 34, Textual support number: 1 DEF

[Se díce de los instrumentos que determinan el grado de] contaminantes basados en la medida de los iones que se forman en un proceso de combustión de hidrógeno cuando se introduce un contaminante.  1, record 34, Spanish, - de%20ionizaci%C3%B3n%20a%20la%20llama

Record 35,  Textual support,  English

Record number: 35, Textual support number: 1 DEF

A collective term including a large number of unit operations which, in one way or another, isolate the various components of mixtures. Chief among these are evaporation, distillation, drying, gas absorption, sedimentation, solvent extraction, pressure extraction, adsorption, and filtration. Specialized methods include centrifugation, electromagnetic separation(mass spectrograph), gaseous diffusion, and various types of chromatography.  2, record 35, English, - separation

Record 35,  Textual support,  French

Record number: 35, Textual support number: 1 DEF

Isolement des divers composants d'un mélange par des moyens mécaniques et physiques; désigne souvent la précipitation.  2, record 35, French, - s%C3%A9paration

Record 35,  Textual support,  Spanish

Record 36,  Textual support,  English

Record number: 36, Textual support number: 1 DEF

A form of gas chromatography in which the moving phase is a gas and the stationary phase is a surface-active sorbent(charcoal, silica gel, or activated alumina). The separation is achieved by adsorption of the components of a sample.  4, record 36, English, - gas%2Dsolid%20chromatography

Record number: 36, Textual support number: 1 OBS

The physical states of the mobile and stationary phases give rise to four basic types of chromatography :gas-liquid chromatography(GLC), gas-solid chromatography(GSC), liquid-liquid chromatography(LLC), and liquid-solid chromatography(LSC). Of the four basic types of chromatography, the two gas systems are independent and not subject to subdivisions. Thus the terms "gas-liquid chromatography" and "gas-solid chromatography" adequately identify the techniques involved. The liquid systems are not as easily described and are not mutually exclusive, which can lead to considerable confusion.  5, record 36, English, - gas%2Dsolid%20chromatography

Record 36,  Textual support,  French

Record number: 36, Textual support number: 1 DEF

Chromatographie en phase gazeuse dans laquelle la phase fixe est constituée par un adsorbant solide.  5, record 36, French, - chromatographie%20gaz%2Dsolide

Record number: 36, Textual support number: 1 OBS

Dans cette définition, le premier mot spécifie la nature de la phase mobile et le second la phase stationnaire. En chromatographie gazeuse, la distinction entre gaz-solide peut paraître obscure : des liquides peuvent être employés pour modifier les phases stationnaires solides et les supports solides utilisés pour retenir les phases stationnaires liquides qui peuvent affecter le processus chromatographique. Dans un classement selon la nature des phases, le terme relatif à l'effet prédominent doit être choisi.  6, record 36, French, - chromatographie%20gaz%2Dsolide

Record number: 36, Textual support number: 2 OBS

«Chromatographie gaz-solide» a été normalisé par l'AFNOR.  7, record 36, French, - chromatographie%20gaz%2Dsolide

Record 36,  Textual support,  Spanish

Record number: 36, Textual support number: 1 DEF

Cromatografía de gases en la que la fase estacionaria es un sólido adsorbente.  3, record 36, Spanish, - cromatograf%C3%ADa%20gas%2Ds%C3%B3lido

Record 37,  Textual support,  English

Record number: 37, Textual support number: 1 DEF

A form of gas chromatography in which the fixed phase(column packing) is a liquid solvent distributed on an inert solid support.  6, record 37, English, - gas%2Dliquid%20chromatography

Record number: 37, Textual support number: 1 OBS

The physical states of the mobile and stationary phases give rise to four basic types of chromatography :gas-liquid chromatography(GLC), gas-solid chromatography(GSC), liquid-liquid chromatography(LLC), and liquid-solid chromatography(LSC). Of the four basic types of chromatography, the two gas systems are independent and not subject to subdivisions. Thus the terms "gas-liquid chromatography" and "gas-solid chromatography" adequately identify the techniques involved. The liquid systems are not as easily described and are not mutually exclusive, which can lead to considerable confusion.  7, record 37, English, - gas%2Dliquid%20chromatography

Record number: 37, Textual support number: 1 PHR

Open tubular gas-liquid chromatography.  4, record 37, English, - gas%2Dliquid%20chromatography

Record 37,  Textual support,  French

Record number: 37, Textual support number: 1 DEF

Chromatographie en phase gazeuse dans laquelle la phase fixe est constituée par un liquide imprégnant un support solide inerte.  4, record 37, French, - chromatographie%20gaz%2Dliquide

Record number: 37, Textual support number: 1 OBS

Dans cette définition et dans celle de la chromatographie gaz-solide, le premier mot spécifie la nature de la phase mobile et le second la phase stationnaire. Les phases stationnaires liquides sont déposées sur des solides, mais le support solide affecte le processus chromatographique. Dans un classement selon la nature des phases, le terme relatif à l'effet prédominant doit être choisi.  5, record 37, French, - chromatographie%20gaz%2Dliquide

Record number: 37, Textual support number: 2 OBS

chromatographie gaz-liquide : terme normalisé par l'AFNOR.  6, record 37, French, - chromatographie%20gaz%2Dliquide

Record 37,  Textual support,  Spanish

Record number: 37, Textual support number: 1 DEF

Cromatografía de gases en la que la fase estacionaria es un líquido soportado en un sólido.  4, record 37, Spanish, - cromatograf%C3%ADa%20de%20gas%20l%C3%ADquido

Record 38,  Textual support,  English

Record number: 38, Textual support number: 1 CONT

Adsorption chromatography. This form of chromatography employs an adsorbent such as silica gel or alumina as a solid stationary phase, and either a liquid mobile phase... or a gas mobile phase....  2, record 38, English, - adsorption%20chromatography

Record number: 38, Textual support number: 1 OBS

Adsorption chromatography with Florisil, alumina, silica gel, and carbon as the adsorbents has been used extensively for cleanup of soil extracts prior to insecticidal determination.  3, record 38, English, - adsorption%20chromatography

Record 38,  Textual support,  French

Record number: 38, Textual support number: 1 DEF

Séparation principalement fondée sur les différences d'affinité des composés pour la surface du solide actif sur lequel ils sont adsorbés.  2, record 38, French, - chromatographie%20d%27adsorption

Record number: 38, Textual support number: 2 DEF

[...] type de chromatographie [...] utilisé [...] pour la séparation des substances lipophiles.  3, record 38, French, - chromatographie%20d%27adsorption

Record 38,  Textual support,  Spanish

Record number: 38, Textual support number: 1 DEF

Cromatografía basada en las diferencias entre las afinidades de adsorción de los componentes de una mezcla por la superficie de un sólido activo.  2, record 38, Spanish, - cromatograf%C3%ADa%20de%20adsorci%C3%B3n

Record 39,  Textual support,  English

Record number: 39, Textual support number: 1 DEF

In chromatography the solid poching or support material, which may be in powder, gel or sheet form.  3, record 39, English, - stationary%20phase

Record number: 39, Textual support number: 1 OBS

In a wider sense, "stationary phase" also refers to the immobile phase in all forms of chromatography.  4, record 39, English, - stationary%20phase

Record number: 39, Textual support number: 2 OBS

The solid support itself should not be identified with the stationary phase.  3, record 39, English, - stationary%20phase

Record number: 39, Textual support number: 1 CONT

In gas chromatography, helium, hydrogen, nitrogen, or some other inert gas is employed as the mobile phase. With gas-solid chromatography, a stationary phase of an adsorptive solid, such as carbon, alumina, or silica, either is packed in the column as small particles or is coated on the inside wall as a film. Retention, in either case, is by weak adsorptive forces between the solute molecules and adsorptive sites on the solid material.  5, record 39, English, - stationary%20phase

Record 39,  Textual support,  French

Record number: 39, Textual support number: 1 DEF

Phase non mobile qui constitue le lit chromatographique dont dépend la séparation.  3, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 1 OBS

En chromatographie gaz-solide et en chromatographie liquide-solide, par exemple, le solide actif est la phase stationnaire et en chromatographie gaz-liquide et en chromatographie liquide-liquide, c'est le liquide (et non le support solide) qui constitue cette phase stationnaire.  3, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 2 OBS

Bien que le terme «phase stationnaire» soit plutôt réservé à la chromatographie en phase liquide sur colonne pour désigner la phase mobile sur support rigide, il désigne, plus largement, le support immobile dans tous les autres genres de chromatographie.  4, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 3 OBS

[En chromatographie d'échange d'ions]. La phase stationnaire est un échangeur d'ions, c'est-à-dire un support solide comportant des groupements fonctionnels ionisés, porteurs de charges positives ou négatives, et des ions de signe contraire assurant l'électroneutralité. Ces ions sont échangeables, en nombre équivalent, avec ceux de même signe de la solution avec laquelle l'échangeur est mis en contact.  5, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 4 OBS

En chromatographie classique sur colonne, la phase stationnaire est en général constituée par de l'eau et comme phase mobile, on choisit des solvants organiques toujours moins polaires.  6, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 5 OBS

Ne pas confondre avec phase stationnaire de la croissance de cellules.  7, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 1 PHR

La phase stationnaire se volatilise.  4, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 2 PHR

Compression, enroulement, film, grain, lit, masse, pore, suspension de la phase stationnaire.  4, record 39, French, - phase%20stationnaire

Record number: 39, Textual support number: 3 PHR

Phase liquide stationnaire.  4, record 39, French, - phase%20stationnaire

Record 39,  Textual support,  Spanish

Record 40,  Textual support,  English

Record number: 40, Textual support number: 1 OBS

Gas chromatography.  1, record 40, English, - negative%20peak

Record 40,  Textual support,  French

Record number: 40, Textual support number: 1 DEF

Pic se trouvant au-dessous de la ligne de base (en anglais : baseline).  1, record 40, French, - pic%20n%C3%A9gatif

Record number: 40, Textual support number: 1 OBS

Reproduit du lexique «Disarmament and Peace Keeping/Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  2, record 40, French, - pic%20n%C3%A9gatif

Record 40,  Textual support,  Spanish

Record 41,  Textual support,  English

Record number: 41, Textual support number: 1 OBS

e. g. gas chromatography-mass spectrometry(GC-MS) ;gas chromatography-Fourier Transform Infrared chromatography(GC-FTIR)  1, record 41, English, - combination%20of%20instruments

Record 41,  Textual support,  French

Record number: 41, Textual support number: 1 OBS

chromatographie en phase gazeuse - spectrométrie de masse (CPG-SM); chromatographie en phase gazeuse - chromatographie infrarouge à transformée de Fourier (CPG-IRTF), par exemple  1, record 41, French, - instruments%20coupl%C3%A9s

Record number: 41, Textual support number: 2 OBS

Reproduit du lexique «Disarmament and Peace Keeping/Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  2, record 41, French, - instruments%20coupl%C3%A9s

Record 41,  Textual support,  Spanish

Record 42,  Textual support,  English

Record number: 42, Textual support number: 1 OBS

gas chromatography  1, record 42, English, - atomic%20emission%20detector

Record 42,  Textual support,  French

Record number: 42, Textual support number: 1 OBS

Reproduit du lexique «Disarmament and Peace Keeping/Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  2, record 42, French, - d%C3%A9tecteur%20%C3%A0%20%C3%A9mission%20atomique

Record 42,  Textual support,  Spanish

Record 43,  Textual support,  English

Record number: 43, Textual support number: 1 CONT

To obtain the rapid separation of large quantities of materials, various techniques have been developed to produce continuous forms of chromatography. The easiest of these is the batch process of automatic sampling and fraction collecting applied regularly to GC [gas chromatography] and HPLC [high pressure liquid chromatography]. Other more truly continuous forms of chromatography have been developed for GC, including the use of circular columns, moving bed processes and radial flow columns.  1, record 43, English, - continuous%20chromatography

Record 43,  Textual support,  French

Record 43,  Textual support,  Spanish

Record 44,  Textual support,  English

Record number: 44, Textual support number: 1 CONT

Oil match analyses include :-collecting samples from all possible sources; collecting samples from the receiving environment; analyzing samples in a laboratory by gas chromatography, or other methods; obtaining results which provide a finger print for matching.  1, record 44, English, - oil%20match%20analysis

Record 44,  Textual support,  French

Record 44,  Textual support,  Spanish

Record 45,  Textual support,  English

Record number: 45, Textual support number: 1 DEF

In gas chromatography, the adjusted retention time multiplied by the pressure-gradient correction factor.  2, record 45, English, - net%20retention%20time

Record 45,  Textual support,  French

Record 45,  Textual support,  Spanish

Record 46,  Textual support,  English

Record number: 46, Textual support number: 1 CONT

By comparing such parameters as sensitivity, stability, linearity, response time, and simplicity in design, the relative merits of detectors have been discussed at numerous international symposia by recognized leaders in the field of gas chromatography.  2, record 46, English, - stability

Record number: 46, Textual support number: 1 PHR

Long-range stability, zero-line stability.  3, record 46, English, - stability

Record 46,  Textual support,  French

Record 46,  Textual support,  Spanish

Record 47,  Textual support,  English

Record number: 47, Textual support number: 1 DEF

A device by means of which a liquid or gaseous sample is introduced directly into the chromatographic column or is swept into the column by the mobile phase.  3, record 47, English, - injection%20port

Record number: 47, Textual support number: 1 CONT

An injection port is necessary in all g. c. [gas chromatography] and h. p. l. c. [high-performance liquid chromatography] systems in which syringe injection is employed. The injection port joins the top of the column to the mobile phase supply line, and has a third outlet through a small orifice covered by a self-sealing septum. Injection of samples is done by inserting the hypodermic syringe containing the sample through this septum so that the point of the needle is immediately above the head of the column. Design of the injection port must be such that it can be maintained at a uniform temperature and will possess a very small dead volume.  4, record 47, English, - injection%20port

Record 47,  Textual support,  French

Record number: 47, Textual support number: 1 CONT

Chambre d'injection pour liquides ou solutions. C'est le système le plus utilisé [...] le gaz porteur, de préférence préchauffé, entre dans une chambre chauffée, obturée par une pastille d'élastomère, le septum, qui assure l'étanchéité. À l'aide d'une seringue hypodermique de petite capacité, on pique au travers de la membrane, de telle manière que l'extrémité de l'aiguille arrive au-dessous du niveau de l'arrivée du gaz porteur, puis on pousse le piston pour réaliser l'injection. La condition demandée à la chambre d'injection est d'avoir un volume interne aussi petit que possible, pour limiter les volumes morts de l'appareil. Pour assurer la vaporisation instantanée de l'échantillon, l'injecteur est habituellement maintenu à une température au moins 30 °C plus élevée que celle du four contenant la colonne.  4, record 47, French, - chambre%20d%27injection

Record number: 47, Textual support number: 1 OBS

L'injecteur à liquides classiques comprend: un écrou à ailettes pour serrage et refroidissement du septum, le septum, le bloc chauffé, la chambre de vaporisation, le capillaire de préchauffage, le raccord de colonne.  2, record 47, French, - chambre%20d%27injection

Record 47,  Textual support,  Spanish

Record 48,  Textual support,  English

Record number: 48, Textual support number: 1 CONT

Headspace sampling. Traditional methods for g. c. [gas chromatography] studies on the ethanol content of body fluids, particularly blood and urine, have involved either direct column injections, with the inherent possibility of blocking the column with solid deposits, or preliminary extraction and/or distillation. The technique of headspace sampling was introduced in order to obviate these sampling problems.  1, record 48, English, - headspace%20sampling

Record 48,  Textual support,  French

Record number: 48, Textual support number: 1 CONT

Quand on veut analyser des vapeurs, des odeurs de produits quelconques, que l'on appelle des flaveurs, on est amené à vouloir les concentrer quelque peu pour se placer dans le domaine possible de sensibilité des détecteurs. On a alors recours à la technique de l'espace de tête (head-space), dans laquelle l'échantillon solide ou liquide est placé dans un pilulier de faible capacité, obturé par une capsule élastomère.  2, record 48, French, - technique%20de%20l%27espace%20de%20t%C3%AAte

Record 48,  Textual support,  Spanish

Record 49,  Textual support,  English

Record number: 49, Textual support number: 1 DEF

The area enclosed between the peak and the peak base.  2, record 49, English, - peak%20area

Record number: 49, Textual support number: 1 CONT

[Analysis of environmental and material samples from spill sites.] A suitable volume is injected into an ion chromatograph. Peak areas and retention times are used to identify and quantify species of interest relative to standards.  3, record 49, English, - peak%20area

Record number: 49, Textual support number: 1 OBS

In gas chromatography.  4, record 49, English, - peak%20area

Record number: 49, Textual support number: 1 PHR

Corrected peak area.  5, record 49, English, - peak%20area

Record 49,  Textual support,  French

Record number: 49, Textual support number: 1 CONT

[Chromatographie d'échange d'ions.] Une quantité adéquate du mélange est injectée dans un chromatographe d'échange d'ions. Les aires des pics et les temps de rétention servent à quantifier et à identifier les substances étudiées, en fonction des étalons.  3, record 49, French, - aire%20des%20pics