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STUDY OF THE ISOTOPIC COMPOSITION OF MERCURY: EXPERIMENTAL APPROACH

The main objective of this work was to study experimentally the isotopic in derivatization processes i.e. Ethylation and Propylation. The multi plasma mass spectrometry (MC-ICPMS) technique makes it possible to measure isotopic signatures of mercury stable elements efficiently in extremely compact i.e. 1ppb and 10ppb concentration systems. This device made it possible to study the evolution of mass independent fractionation (MIF) and mass dependent fractionation (MDF) under different conditions. According to our results, MIF or the so-called anomalies are observed only for the odd isotopic mercury ( study conducted from the samples, reveals the presence of a maximum anomaly for hydrochloric acid (HCl) 3% in concentration equal to +1.2 ‰ for ?201Hg, but also the presence of a negative anomaly, equal to -0.43 ‰ for ?201Hg at 10% concentration of HCl. As derivatization procedure, direct aqueous phase methylations and propylation were tested on the sample. The different methods of derivatization are compared.


Auteur(s) : Sambou, A., Gomis, L., Talla, KH., Ngom, B. D., Diallo, S., Beye, A. C. and Epov, V
Pages : 2733-2740
Année de publication : 2019
Revue : International Journal of Current Research
N° de volume : 4; 11
Type : Article
Mise en ligne par : GOMIS Louis