TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

The molecular peak represents the ionized form of the intact molecule of the compound being analyzed. It is typically the peak with the highest m/z [mass-to-charge ratio] value in the mass spectrum and corresponds to the molecular weight of the compound.  3, fiche 1, Anglais, - molecular%20peak

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Le pic parent correspondant à l'ion moléculaire [...] donne la masse moléculaire du composé.  2, fiche 1, Français, - pic%20mol%C3%A9culaire

Record number: 1, Textual support number: 2 CONT

Une intensité de 100 % est attribuée au signal de l'ion le plus abondant (pic de base) qui n'est pas forcément le pic moléculaire.  1, fiche 1, Français, - pic%20mol%C3%A9culaire

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

Mass spectrometry(MS) is an analytical technique commonly used for qualitative and quantitative chemical analysis. MS measures the mass-charge ratio(m/z) of any analyte, of both organic and inorganic nature, which has previously been ionized.  5, fiche 2, Anglais, - mass%20spectrometry

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

La spectrométrie de masse (SM) [...] permet de déterminer la masse des molécules ou des atomes présents dans l'échantillon. Pour cela, les molécules doivent passer à l'état d'ions en phase gazeuse. Ces ions sont ensuite séparés sous vide en fonction de leur rapport masse sur charge [...]  2, fiche 2, Français, - spectrom%C3%A9trie%20de%20masse

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

Acceleration of ions to a constant energy for TOFMS [time-of-flight mass spectrometry] is achieved by [the] application of an electrostatic field over a known distance(from an ion's initial position to the exit of the acceleration region). By this method, all ions starting from that point, regardless of m/z [mass-to-charge ratio], are sent into the mass-separation region(the flight tube) with the same nominal boost in energy.  2, fiche 3, Anglais, - flight%20tube

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

[Dans un analyseur à temps de vol, la] charge de l'ion et la tension d'accélération étant constantes, la vitesse d'un ion est d'autant plus grande que sa masse est faible; les ions les moins lourds arrivent les premiers au détecteur situé à l'extrémité du tube de vol.  2, fiche 3, Français, - tube%20de%20vol

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

Tandem mass spectrometry... is a process by which gas-phase ions of an analyte resulting from an initial ionization undergo separation according to their m/z [mass-to-charge ratio] values, using a first iteration of mass spectrometry. Ions of individual m/z values(precursor ions) are then subjected to collisional activation so that these precursor ions will fragment, producing product ions of different m/z values. These product ions then are separated and detected by a second iteration of mass spectrometry; thus the name tandem mass spectrometry or MS/MS.  3, fiche 4, Anglais, - tandem%20mass%20spectrometry

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 CONT

La SM/SM désigne une spectrométrie de masse où un premier analyseur sert à isoler un ion parent qui subit ensuite une fragmentation donnant des ions fils et fragments neutres. Les ions fils sont ensuite analysés dans un deuxième analyseur.  3, fiche 4, Français, - spectrom%C3%A9trie%20de%20masse%20en%20tandem

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

To study systems with large mass-to-charge ratios or systems that have very complicated isotope patterns, we need a spectrometer with the ability to accurately determine masses so we can be sure we are studying the right ion. For this we use a Fourier transform ion cyclotron resonance mass spectrometer(FT-ICR MS). In this technique, the mass-to-charge ratio(m/z) of an ion can be experimentally determined by measuring the frequency at which the ion processes in a magnetic field.  1, fiche 5, Anglais, - Fourier%20transform%20ion%20cyclotron%20resonance%20mass%20spectrometer

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 OBS

The abbreviation m/z is used to denote the dimensionless quantity formed by dividing the mass number of an ion by its charge number. It has long been called the mass-to-charge ratio although m is not the ionic mass nor is z a multiple or the elementary(electronic) charge, e. The abbreviation m/e, is therefore, not recommended.  2, fiche 6, Anglais, - mass%2Dto%2Dcharge%20ratio

Record number: 6, Textual support number: 2 OBS

mass-to-charge ratio: term extracted from the "Disarmament and Peace Keeping" glossary with the permission of the United Nations Office at Geneva.  4, fiche 6, Anglais, - mass%2Dto%2Dcharge%20ratio

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 OBS

rapport masse/charge : terme tiré du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  3, fiche 6, Français, - rapport%20masse%2Fcharge

Fiche 6,  Justifications,  Espagnol

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 DEF

[...] the dimensionless quantity formed by dividing the mass number of an ion by its charge number.  3, fiche 7, Anglais, - mass%2Dto%2Dcharge%20ratio

Record number: 7, Textual support number: 1 OBS

symbol :m/z.  4, fiche 7, Anglais, - mass%2Dto%2Dcharge%20ratio

Fiche 7,  Justifications,  Français

Record number: 7, Textual support number: 1 OBS

symbole : m/z.  3, fiche 7, Français, - rapport%20masse%20sur%20charge

Fiche 7,  Justifications,  Espagnol