TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A partition process in which the paper acts both as the support and, by virtue of the water held in its fibres, as the stationary phase.  3, record 1, English, - paper%20chromatography

Record number: 1, Textual support number: 1 CONT

The tendency for a compound to divide its time between two immiscible solvents (solvents such as hexane and water which won’t mix) is known as partition. Paper chromatography using a non-polar solvent is therefore a type of partition chromatography.  4, record 1, English, - paper%20chromatography

Record number: 1, Textual support number: 2 CONT

Paper chromatography... is used widely for qualitative identification, although quantitative analysis can be done. A sample is spotted onto a strip of filter paper with a micropipet, and the chromatogram is "developed" by placing the bottom of the paper(but not the sample spot) in a suitable solvent... The solvent is drawn up the paper by capillary action, and the sample components move up the paper at different rates, depending on their solubility and their degree of retention by the paper.  5, record 1, English, - paper%20chromatography

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

La phase fixe peut [...] être constituée par un liquide imprégnant un support solide ou encore par une chaîne carbonée fixée sur un support (phase greffée). Ainsi en chromatographie sur papier, la phase fixe est formée par l'eau que les molécules de cellulose du papier adsorbent, alors qu'en chromatographie en phase gazeuse, elle est constituée d'un liquide peu volatil et thermiquement stable imprégnant un granulé poreux.  3, record 1, French, - chromatographie%20sur%20papier

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 CONT

En el procedimiento de la cromatografía sobre papel, se vierte una gota de la solución a analizar en un papel absorbente (papel de filtro) y se deja secar; luego se sumerge el extremo de la hoja en una mezcla de solventes (alcoholes, éteres, etc.) en agua. Los solutos migran entonces por capilaridad y cada uno de ellos da una mancha propia diferentemente situada en el papel.  2, record 1, Spanish, - cromatograf%C3%ADa%20en%20papel

Record 2,  Textual support,  English

Record number: 2, 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 2, English, - semi%2Dvolatile%20organic%20compound

Record number: 2, 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 2, English, - semi%2Dvolatile%20organic%20compound

Record number: 2, Textual support number: 1 OBS

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

Record number: 2, 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 2, English, - semi%2Dvolatile%20organic%20compound

Record 2,  Textual support,  French

Record number: 2, 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 2, French, - compos%C3%A9%20organique%20semi%2Dvolatil

Record number: 2, Textual support number: 1 OBS

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

Record number: 2, 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 2, French, - compos%C3%A9%20organique%20semi%2Dvolatil

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A device that quantitatively measures the response signal of a detector to a component in a mixture.  2, record 3, English, - integrator

Record number: 3, Textual support number: 1 OBS

By comparing the integrator output to the same component in a calibration mixture and in a sample, the concentration in the sample can be calculated. If the detector response has a temporal dimension, as in chromatography, then the instantaneous response is integrated with respect to time.  2, record 3, English, - integrator

Record number: 3, Textual support number: 2 OBS

integrator: term and definition standardized by ISO in 2014.  3, record 3, English, - integrator

Record number: 3, Textual support number: 1 PHR

electronic integrator, mechanical integrator  4, record 3, English, - integrator

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Dispositif qui mesure quantitativement la réponse d’un détecteur à un constituant d’un mélange.  2, record 3, French, - int%C3%A9grateur

Record number: 3, Textual support number: 1 OBS

Il est possible de calculer la concentration d’un constituant dans un échantillon en comparant les sorties de l’intégrateur pour ce même constituant dans un mélange étalon et dans l’échantillon. Si la réponse du détecteur varie avec le temps, comme en chromatographie, alors la réponse instantanée est intégrée dans le temps.  2, record 3, French, - int%C3%A9grateur

Record number: 3, Textual support number: 2 OBS

intégrateur : terme et définition normalisés par l'ISO en 2014.  3, record 3, French, - int%C3%A9grateur

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A version of reaction chromatography in which a sample is thermally decomposed to simpler fragments before entering the column.  2, record 4, English, - pyrolysis%2Dgas%20chromatography

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 OBS

Term(s) taken from a Canadian laboratory-equipment company’s catalogue.  1, record 5, English, - high%2Dpreformance%20liquid%20chromatography%20sample%20preparation

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 OBS

Terme(s) tiré(s) du catalogue d'une compagnie canadienne d'équipement de laboratoire.  1, record 5, French, - pr%C3%A9paration%20d%27%C3%A9chantillons%20pour%20la%20chromatographie%20liquide%20%28%C3%A0%29%20haute%20performance

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 OBS

Term(s) taken from a Canadian laboratory-equipment company’s catalogue.  1, record 6, English, - fast%20protein%20liquid%20chromatography%20sample%20preparation

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 OBS

Terme(s) tiré(s) du catalogue d'une compagnie canadienne d'équipement de laboratoire.  1, record 6, French, - pr%C3%A9paration%20d%27%C3%A9chantillons%20pour%20la%20chromatographie%20FPLC

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 OBS

Term(s) taken from a Canadian laboratory-equipment company’s catalogue.  1, record 7, English, - chromatography%20sample

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 OBS

Terme(s) tiré(s) du catalogue d'une compagnie canadienne d'équipement de laboratoire.  1, record 7, French, - %C3%A9chantillon%20de%20chromatographie

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

In permeation [or gel] chromatography, the molecular-mass limit above which the investigated sample molecules are unable to penetrate into the molecular sieve or gel pores; the molecules’ migration velocity is equal to that of the mobile phase.  2, record 8, English, - exclusion%20limit

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

A thin-layer chromatography technique in which a spot of the sample is applied at the centre of a paper circle or square plate; the chromatogram is developed from the centre to the edges.  3, record 9, English, - circular%20chromatography

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Chromatographie circulaire sur papier. À partir d'un disque de papier-filtre, on recoupe une bande large d'environ 1 cm, que l'on replie [...] et que l'on plonge dans le solvant pour qu'elle fasse fonction de mèche. Le mélange à examiner est déposé [...]; le disque ainsi préparé [...] est placé horizontalement au-dessus d'une demi-boîte de Petri [...] de façon que la mèche [...] plonge dans le solvant [....] Le tout est déposé dans une boîte de Petri renversée [...] sur le fond de laquelle une bande de papier filtre [...] imbibée d'eau ou de solvant, sature l'atmosphère empêchant l'évaporation hors du papier chromatographique.  4, record 9, French, - chromatographie%20circulaire%20sur%20papier

Record number: 9, Textual support number: 1 OBS

Suivant la direction de la migration on parle de chromatographie ascendante, descendante, circulaire, [...] ou radiale.  3, record 9, French, - chromatographie%20circulaire%20sur%20papier

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

The removal of adsorbed species from a porous bed or chromatographic column by passing the mobile phase through the stationary phase.  2, record 10, English, - elution

Record number: 10, Textual support number: 1 OBS

The term elution is preferred to the term development. However, in planar chromatography where the sample components are developed on the paper or plate, the latter is still in use.  2, record 10, English, - elution

Record number: 10, Textual support number: 1 PHR

Elution analysis.  3, record 10, English, - elution

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 DEF

Destruction d'un produit d'adsorption par un liquide dissolvant sur une colonne d'adsorption chromatographique ou sur une colonne d'échangeur d'ions.  2, record 10, French, - %C3%A9lution

Record number: 10, Textual support number: 1 PHR

Analyse, pic (par, d') élution.  3, record 10, French, - %C3%A9lution

Record number: 10, Textual support number: 2 PHR

Élution graduée.  3, record 10, French, - %C3%A9lution

Record 10,  Textual support,  Spanish

Record number: 10, Textual support number: 1 DEF

Separación mediante un fluido de una sustancia retenida en una fase estacionaria.  2, record 10, Spanish, - eluci%C3%B3n

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

Chromatography in which the adsorbent material is saturated with the mobile phase ions... as are present in the sample carrying eluent...  3, record 11, English, - ion%2Dexclusion%20chromatography

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

[A factor] represented by a term in the van Deemter equation. It is the contribution to plate height that is due to molecules traveling along paths through the column and it depends on the particle size and geometry of the packing.  2, record 12, English, - eddy%20diffusion%20term

Record number: 12, Textual support number: 1 CONT

Eddy diffusion broadens the band when passing through the column and detected in the chromatography. This is due to the molecules of the sample traveling through the column along many different paths of different lengths. The shortest path is the front of the band and the longest path is located in the back of the band. This can be corrected if the band is broad and the column support is of small size and uniform. This effect may be described by the van Deemter equation. H=A+(B/u) +Cu. Where M is the flow rate, A is the eddy diffusion term, B/u is the longitudinal diffusion term and Cu is the mass-transfer rate term. The eddy diffusion is independent of the flow-rate and only is concerned by how the column was packed.  1, record 12, English, - eddy%20diffusion%20term

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

[A] separation based mainly upon exclusion effects, such as differences in molecular size and/or shape ... or in charge ...  1, record 13, English, - permeation%20chromatography

Record number: 13, Textual support number: 2 DEF

A form of liquid chromatography in which the separation of the sample components is based on the differences in the size and/or shape of the molecules or in the charge...  1, record 13, English, - permeation%20chromatography

Record number: 13, Textual support number: 1 OBS

"Gel chromatography", in which the stationary phase is either a swollen gel or a rigid three-dimensional silica or polymetric matrix, is the most widely used permeation technique.  2, record 13, English, - permeation%20chromatography

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

[...] séparation [...] basée principalement sur les effets d'exclusion liés à la différence de taille et/ou de formes de molécules à séparer [...] ou de charge ionique [...]  1, record 13, French, - chromatographie%20par%20perm%C3%A9ation

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, 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 14, English, - flame%20ionization

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 CONT

chromatographie à ionisation de flamme  2, record 14, French, - %C3%A0%20ionisation%20de%20flamme

Record number: 14, 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 14, French, - %C3%A0%20ionisation%20de%20flamme

Record 14,  Textual support,  Spanish

Record number: 14, 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 14, Spanish, - de%20ionizaci%C3%B3n%20a%20la%20llama

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 DEF

A variation of paper chromatography in which an electric current is applied to the ends of the electrolyte-impregnated absorbent paper, thus moving chargeable molecules of the unknown sample toward the appropriate electrode.  2, record 15, English, - paper%20electrophoresis

Record 15,  Textual support,  French

Record 15,  Textual support,  Spanish

Record number: 15, Textual support number: 1 DEF

Separación por migración de partículas cargadas sobre papel filtrante como sustancia soporte.  3, record 15, Spanish, - electroforesis%20en%20papel

Record 16,  Textual support,  English

Record number: 16, 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 16, English, - gas%2Dsolid%20chromatography

Record number: 16, 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 16, English, - gas%2Dsolid%20chromatography

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 DEF

Chromatographie en phase gazeuse dans laquelle la phase fixe est constituée par un adsorbant solide.  5, record 16, French, - chromatographie%20gaz%2Dsolide

Record number: 16, 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 16, French, - chromatographie%20gaz%2Dsolide

Record number: 16, Textual support number: 2 OBS

«Chromatographie gaz-solide» a été normalisé par l'AFNOR.  7, record 16, French, - chromatographie%20gaz%2Dsolide

Record 16,  Textual support,  Spanish

Record number: 16, Textual support number: 1 DEF

Cromatografía de gases en la que la fase estacionaria es un sólido adsorbente.  3, record 16, Spanish, - cromatograf%C3%ADa%20gas%2Ds%C3%B3lido

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 DEF

Chromatography in which the stationary phase is a thin layer of adsorbent gel coated on a glass or plastic plate. The sample is applied in a small spot at the base of the plate, and the plate is made to stand on edge in a solvent. As the solvent rises in the gel by capillary action, the sample components move at different rates and are separated into different spots. The plate is removed from the solvent, dried, and stained to visualize the components.  5, record 17, English, - thin%2Dlayer%20chromatography

Record number: 17, Textual support number: 2 DEF

Chromatography in which the absorbent medium is in a thin layer (as of silica gel, alumina, or cellulose).  6, record 17, English, - thin%2Dlayer%20chromatography

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 DEF

Chromatographie dans laquelle l'absorbant est disposé sur un support en couches minces (alumine, plâtre, cellulose, silicagel, charbons, etc.).  7, record 17, French, - chromatographie%20sur%20couche%20mince

Record number: 17, Textual support number: 1 OBS

Chromatographie sur couche mince[,] appelée également chromatographie sur plaque (ou chromatoplaque), [...] présente des analogies avec la chromatographie sur papier.  8, record 17, French, - chromatographie%20sur%20couche%20mince

Record number: 17, Textual support number: 2 OBS

La chromatographie sur couches minces a l'avantage sur la chromatographie sur papier de pouvoir utiliser des phases fixes variées, et notamment des adsorbants, en outre son domaine d'emploi est intermédiaire, en ce qui concerne les quantités, entre la chromatographie en colonne et la chromatographie sur papier. Elle est particulièrement indiquée comme technique d'essai, ses résultats s'extrapolant immédiatement à la technique en colonne puisqu'on utilise les mêmes phases fixes et les mêmes solvants.  8, record 17, French, - chromatographie%20sur%20couche%20mince

Record number: 17, Textual support number: 3 OBS

TLC est une abréviation de l'anglais (thin-layer chromatography).  8, record 17, French, - chromatographie%20sur%20couche%20mince

Record 17,  Textual support,  Spanish

Record number: 17, Textual support number: 1 DEF

Sistema con un adsorbente de silicagel sobre un soporte de vidrio sobre el que emigra el producto a analizar.  5, record 17, Spanish, - cromatograf%C3%ADa%20en%20capa%20delgada

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 DEF

A separation technique involving passage of a gaseous moving phase through a column containing a fixed phase. ... Gas chromatographic separations are achieved by selective retardation exerted by the fixed phase ...  5, record 18, English, - gas%20chromatography

Record number: 18, Textual support number: 1 CONT

Oil analysis involves three levels of laboratory activity :sample preparation and clean up, basic identification, and final comparison.... Typical analyses include observation of solubility in organic solvents,... [and] gas chromatography... Oils and oil/water samples may be analysed to identify the type of spilled petroleum product or to establish similarity between samples collected from the environment and from suspected sources.  6, record 18, English, - gas%20chromatography

Record number: 18, Textual support number: 1 OBS

The term vapour phase chromatography is no longer used for what is now called gas chromatography.  7, record 18, English, - gas%20chromatography

Record number: 18, Textual support number: 2 OBS

[Refers to] gas-liquid or gas-solid chromatography.  8, record 18, English, - gas%20chromatography

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 DEF

Méthode de séparation dont les principes généraux sont les mêmes que ceux énoncés pour la chromatographie en général, c'est-à-dire fondés sur la migration différentielle des constituants du mélange à analyser au travers d'un substrat choisi. La particularité du procédé est d'opérer en totalité sur des produits volatilisés, ce qui implique de maintenir une température minimale convenable, mais sans qu'il y ait volatilisation du substrat, et de travailler en circuit étanche au gaz.  7, record 18, French, - chromatographie%20en%20phase%20gazeuse

Record number: 18, Textual support number: 1 CONT

La chromatographie en phase gazeuse est une méthode de séparation des composés gazeux ou susceptibles d'être vaporisés par chauffage sans décomposition. Elle permet ainsi l'analyse de mélanges éventuellement très complexes dont les constituants peuvent différer d'une façon considérable par leur nature et leur volatilité. La chromatographie en phase gazeuse appartient à l'ensemble des techniques chromatographiques dont la chromatographie en phase liquide à hautes performances et la chromatographie en couche mince sont d'autres exemples importants.  8, record 18, French, - chromatographie%20en%20phase%20gazeuse

Record number: 18, Textual support number: 1 OBS

Des différentes techniques chromatographiques utilisées pour l'identification des polluants pétroliers [...] [la] chromatographie gazeuse [...] s'est avérée la plus efficace.  9, record 18, French, - chromatographie%20en%20phase%20gazeuse

Record number: 18, Textual support number: 2 OBS

L'expression «chromatographie en phase vapeur» est mauvaise. Condamnée par les bons auteurs depuis plus de vingt ans, elle est encore trop souvent rencontrée.  8, record 18, French, - chromatographie%20en%20phase%20gazeuse

Record 18,  Textual support,  Spanish

Record number: 18, 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 18, Spanish, - cromatograf%C3%ADa%20de%20gases

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 DEF

A liquid which is relatively nonvolatile at the column temperature and is sorbed on the solid support(employed in gas-liquid and liquid-liquid chromatography) where it acts as a solvent for the sample. The separation achieved differs with differences in solutility of the various components of the sample in the liquid phase.  4, record 19, English, - liquid%20phase

Record number: 19, Textual support number: 1 OBS

Thin-film liquid stationary phases can be prepared for separation by liquid-liquid partition chromatography. The film, commonly water, is supported on materials such as silica gel or diatomaceous earth, as in column chromatography. Either silica gel or diatomaceous earth may be silanized to convert the surfaces to nonpolar methyl groups for reversed-phase thin-layer chromatography.  5, record 19, English, - liquid%20phase

Record number: 19, Textual support number: 1 PHR

Nonpolar, polar liquid phase.  6, record 19, English, - liquid%20phase

Record 19,  Textual support,  French

Record number: 19, Textual support number: 1 DEF

En chromatographie gazeuse, liquide dont la tension de vapeur est relativement basse à la température de la colonne, qui est adsorbé sur le support solide et qui joue le rôle de solvant vis-à-vis de l'échantillon. La séparation repose sur la différence de solubilité des différents constituants de l'échantillon dans la phase liquide.  2, record 19, French, - phase%20liquide

Record 19,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 CONT

The mass transfer term is influenced by the partition coefficient and, therefore, by the relative solubility of the sample in the liquid phase(i. e, by the type and amount of liquid phase as well as the temperature). Or, in the case of gas-solid chromatography, it is influenced by the adsorbability of the solute on the solid phase.  3, record 20, English, - solid%20support

Record number: 20, Textual support number: 1 OBS

Traditionally, in partition chromatography, the solid particles were deposited upon the liquid stationary phase ... this meaning must now be extended to include the inside surfaces of capillary columns.  4, record 20, English, - solid%20support

Record number: 20, Textual support number: 2 OBS

In liquid-liquid partition TLC [thin-layer chromatography] the solid sorbent for the stationary phase is sometimes known as the carrier rather than as the support.  4, record 20, English, - solid%20support

Record number: 20, Textual support number: 3 OBS

There are two main groups of supports: diatomaceous earths and nondiatomites. The former group includes celite, firebrick and kieselguhr while the latter includes carbon, detergents, polymers, glass beads and silica gel.  4, record 20, English, - solid%20support

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 DEF

Vecteur, liquide ou gazeux, qui déplace le soluté.  2, record 20, French, - support%20solide

Record number: 20, Textual support number: 1 OBS

Les supports sont presque toujours des matériaux à base de silice (silice ou diatomite), dont les pores ont un diamètre de l'ordre de 0,1 à 1[mu]m et la surface spécifique une valeur de 0,3 à 10 m²/g.  6, record 20, French, - support%20solide

Record number: 20, Textual support number: 2 OBS

Normalement un solide inerte, poreux, qui adsorbe la phase liquide. Le domaine de la granulométrie du support intervient sur l'efficacité de la colonne et sur la différence de pression nécessaire à l'obtention d'un débit gazeux donné. Dans le cas de séparations spéciales, on a modifié la méthode en remplaçant le support solide inerte par un solide actif. Dans les colonnes capillaires, la paroi interne de la colonne joue le rôle de support solide, ce qui élimine les solides poreux.  1, record 20, French, - support%20solide

Record number: 20, Textual support number: 1 PHR

Mise en suspension, site actif du support solide.  7, record 20, French, - support%20solide

Record number: 20, Textual support number: 2 PHR

Support solide entièrement poreux, pelliculaire.  7, record 20, French, - support%20solide

Record 20,  Textual support,  Spanish

Record 21,  Textual support,  English

Record number: 21, 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 21, English, - injection%20port

Record number: 21, 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 21, English, - injection%20port

Record 21,  Textual support,  French

Record number: 21, 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 21, French, - chambre%20d%27injection

Record number: 21, 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 21, French, - chambre%20d%27injection

Record 21,  Textual support,  Spanish

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 DEF

To separate sample components by chromatography.  2, record 22, English, - chromatograph

Record number: 22, Textual support number: 1 OBS

chromatography: A physical method of separation in which the components to be separated are distributed between two phases, one of which is stationary (stationary phase) while the other (the mobile phase) moves in a definite direction.  3, record 22, English, - chromatograph

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 DEF

Séparer par chromatographie.  2, record 22, French, - chromatographier

Record number: 22, Textual support number: 1 OBS

chromatographie : Méthode destinée à séparer les constituants d'un échantillon en les répartissant entre deux phases, l'une stationnaire et l'autre mobile.  2, record 22, French, - chromatographier

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 DEF

A zone in paper and thin-layer chromatography of approximately circular appearance.  2, record 23, English, - spot

Record number: 23, Textual support number: 1 CONT

The detection of spots is sometimes easier than with paper chromatography because more universal techniques can be used. Frequently, colorless or nonfluorescent spots can be visualized by exposing the developed plate to iodine vapor. The iodine vapor interacts with the sample components, either chemically or by solubility, to produce a color. Thin-layer plates and sheets are commercially available which incorporate a fluorescent dye in the powdered adsorbent. When held under ultraviolet light, dark spots appear where sample spots occur due to quenching of the plate fluorescence.  3, record 23, English, - spot

Record number: 23, Textual support number: 1 PHR

Colorless, nonfluorescent spot.  4, record 23, English, - spot

Record 23,  Textual support,  French

Record number: 23, Textual support number: 1 DEF

En chromatographie sur papier ou sur couche mince, zone d'apparence circulaire ou ovale.  2, record 23, French, - tache

Record number: 23, Textual support number: 1 PHR

Étalement de tache.  3, record 23, French, - tache

Record 23,  Textual support,  Spanish

Record 24,  Textual support,  English

Record number: 24, Textual support number: 1 CONT

In elution chromatography, the sample... is placed as a narrow concentration impulse at the beginning of the chromatographic medium. The mobile phase is then introduced, and the sample components migrate with it through the chromatographic bed.  3, record 24, English, - chromatographic%20bed

Record 24,  Textual support,  French

Record number: 24, Textual support number: 1 DEF

[...] formes [différentes] sous lesquelles se trouve la phase stationnaire utilisée dans une séparation chromatographique. La phase mobile peut être gazeuse ou liquide.  2, record 24, French, - lit%20chromatographique

Record number: 24, Textual support number: 1 OBS

L'obtention de colonnes performantes dépend essentiellement de l'homogénéité du lit chromatographique et, par là, de la qualité du remplissage.  3, record 24, French, - lit%20chromatographique

Record 24,  Textual support,  Spanish

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 CONT

A systematic approach to pesticide identification developed by Suzuki uses column chromatography, thin-layer chromatography and gas-liquid chromatography. Mass spectroscopy(MS) is also a powerful tool for the identification of compounds.... The Environmental Protection Agency(EPA) had defined volatile priority pollutants as those amenable to analysis by the purge-and-trap method of sample preparation.... This method is generally applicable for substances with low water solubility and boiling points below 130 ° C.  1, record 25, English, - purge%2Dand%2Dtrap%20method%20of%20sample%20preparation

Record number: 25, Textual support number: 2 CONT

The EPA method of screening for volatile compounds involves purging the sample with helium and trapping the volatilized organic compounds on a column of Tenax GC and silica gel at room temperature. The organic material is then thermally desorbed onto the gas chromatographic column. ... The purge-and-trap methods cited most often are those developed by Bellar and Lichtemberg although many similar techniques have been developed by other researchers.  1, record 25, English, - purge%2Dand%2Dtrap%20method%20of%20sample%20preparation

Record 25,  Textual support,  French

Record number: 25, Textual support number: 1 OBS

(...) il paraît plus judicieux d'introduire les substances séparées par la colonne chromatographique dans un autre appareil généralement destiné à identifier les échantillons qui lui sont soumis. Le couplage est dit en ligne lorsque les solutés vont directement de la sortie de la colonne au second appareil, sans piégeage intermédiaire.  2, record 25, French, - m%C3%A9thode%20de%20pr%C3%A9paration%20d%27%C3%A9chantillons%20par%20purge%20et%20pi%C3%A9geage

Record number: 25, Textual support number: 2 OBS

Une difficulté est de piéger avec le meilleur rendement possible les solutés à la sortie de la colonne. (...) On fait aussi de la chromatographie préparatoire quand on piège un peu de soluté pour l'introduire dans un spectromètre infrarouge aux fins d'identification, mais les colonnes analytiques classiques suffisent.  3, record 25, French, - m%C3%A9thode%20de%20pr%C3%A9paration%20d%27%C3%A9chantillons%20par%20purge%20et%20pi%C3%A9geage

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 DEF

Device for recovering sample components from the mobile phase eluting from GC [gas chromatography] columns(ASTM 1979a 260).  2, record 26, English, - trap

Record number: 26, Textual support number: 1 CONT

The EPA method of screening for volatile compounds involves purging the sample with helium and trapping the volatilized organic compounds on a column of Tenax GC and silica gel at room temperature. The organic material is then thermally desorbed onto the gas chromatographic column. ... The purge-and-trap methods cited most often are those developed by Bellar and Lichtenberg, although many similar techniques have been developed by other researchers.  3, record 26, English, - trap

Record 26,  Textual support,  French

Record number: 26, Textual support number: 1 CONT

une seconde colonne remplie de gel de silice et précédée d'un piège à potasse pour retenir les produits chlorés.  1, record 26, French, - pi%C3%A8ge

Record number: 26, Textual support number: 1 OBS

(...) il paraît plus judicieux d'introduire les substances séparées par la colonne chromatographique dans un autre appareil généralement destiné à identifier les échantillons qui lui sont soumis. Le couplage est dit en ligne lorsque les solutés vont directement de la sortie de la colonne au second appareil, sans piégeage intermédiaire.  2, record 26, French, - pi%C3%A8ge

Record number: 26, Textual support number: 2 OBS

Une difficulté est de piéger avec le meilleur rendement possible les solutés à la sortie de la colonne. (...) On fait aussi de la chromatographie préparatoire quand on piège un peu de soluté pour l'introduire dans un spectromètre infrarouge aux fins d'identification, mais les colonnes analytiques classiques suffisent.  3, record 26, French, - pi%C3%A8ge

Record 26,  Textual support,  Spanish