Analyse fonctionnelle par spectrométrie de masse tandem : Application aux aérosols organiques atmosphériques

TL;DRAbstract

The particulate organic matter (POM) of atmospheric aerosols presents a chemical composition which is particularly complex. At best, only 20 % of the particulate mass can be identified by means of molecular speciation techniques. On the other hand, global analysis methods lead to a great simplification of the matrix and thus to a loss of information. The work carried out during this thesis aim to develop innovative and complementary methods of chemical analysis, enabling a better knowledge and a better comprehension of the organic fraction of atmospheric aerosols. Three functional group analytical methods using tandem mass spectrometry (MS/MS) have been developed, for the quantitative determination of the carboxylic (R-COOH), carbonyl (R-CO-R') and nitro (RNO2) functional groups. In the three cases, the precision of the measurements was estimated by calculating the variability obtained for the analysis of 25 reference mixtures constituted of 16 to 31 compounds according to the studied

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