Overview
ABSTRACT
During the 2010s, high-performance mass spectrometers with gaseous source have been developed like the MAT253 Ultra from Thermo Fisher Scientific. The critical innovation of the instrument resides in its mass resolving power, allowing to measure the rare isotopologues of H2, CH4 or SO2. These measurements, previously unaccessible on conventional technologies, allow to constrain chemical processes previously out of analytical range.
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Read the articleAUTHORS
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Dan LÉVY: Institut de Physique du Globe de Paris, Université de Paris Cité, Paris, France
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Pierre CARTIGNY: Institut de Physique du Globe de Paris, Université de Paris Cité, Paris, France
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Jabrane LABIDI: Institut de Physique du Globe de Paris, Université de Paris Cité, Paris, France
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Isabelle MARTINEZ: Institut de Physique du Globe de Paris, Université de Paris Cité, Paris, France
INTRODUCTION
Mass spectrometers were designed in the late 1940s. Their operation is based on their ability to separate the different species of an ionized gas by means of a magnetic sector according to their mass/charge ratio, making it possible to measure the relative abundance of certain isotopes (e.g. H and D).
Major discoveries have thus been made. These include studies of ancient climates based on the analysis of variations in the ratio 18 O/ 16 O in limestone rocks, which depends essentially on the temperature of ancient oceans. . Mass spectrometers have also enabled isotopic methods to be developed and applied in a wide range of fields, including fraud detection: "Is this wine from Bordeaux?" "Is this orange juice without added sugar? . Isotopic methods have also made it possible to identify testosterone doping in top-level athletes via the difference in the abundance ratio 13 C/ 12 C between exogenous and endogenous testosterone. .
While isotope analysis has been used for both fundamental and applied applications, the analytical performance of mass spectrometers has continued to improve, making it possible to analyze isotopes that are less and less abundant, and increasingly difficult to...
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KEYWORDS
gas | isotopologues | MAT253 Ultra
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Gas-phase species isotope measurements with MAT253 Ultra
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Bibliography
- (1) - ADNEW (G.A.), HOFMANN (M.E.G.), PAUL (D.), LASKAR (A.), SURMA (J.), ALBRECHT (N.), PACK (A.), SCHWIETERS (J.), KOREN (G.), PETERS (W.), RÖCKMANN (T.) - Determination of the triple oxygen and carbon isotopic composition of CO 2 from atomic ion fragments formed in the ion source of the 253 Ultra high-resolution...
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