Mercury fractionation in marine macrofauna using thermodesorption technique: method and its application

Agnieszka Jędruch , Magdalena Bełdowska , Urszula Kwasigroch , Monika Normant-Saremba , Dominika Saniewska

Abstract

Mercury (Hg) is one of the most dangerous elements, and its toxicity and ability to accumulate in organisms depend on its chemical form. There are numerous methods of Hg speciation analysis, out of which the least expensive and the least time-consuming one is thermodesorption. The method has been successfully used for the analysis of abiotic samples – soils and sediments. The aim of this study was to verify whether the simplified thermodesorption method can be used in the analysis of the tissues of animal organisms from different trophic levels. Hg fractionation analyses were performed on a DMA-80 analyser (Milestone, Italy). The results presented in this paper are the first published data on Hg fractionation by thermodesorption method in animal tissues. The study showed that the 5-step thermodesorption method can be applied to various types of environmental matrices, which makes it universal. This method is of great importance in terms of estimating the Hg uptake and transfer in the trophic chain, and also enables the assessment of global Hg circulation in the environment. The presented method does not require previous digestion of samples or the use of expensive reagents. It can also be used for the preliminary selection of samples for MeHg analysis. The results obtained by this 5-step fractionation could be comparable with different research, conducted using other Hg analysers.
Author Agnieszka Jędruch ZChMiOŚM
Agnieszka Jędruch,,
- Division of Marine Chemistry and Environmental Protection
, Magdalena Bełdowska ZChMiOŚM
Magdalena Bełdowska,,
- Division of Marine Chemistry and Environmental Protection
, Urszula Kwasigroch ZChMiOŚM
Urszula Kwasigroch,,
- Division of Marine Chemistry and Environmental Protection
, Monika Normant-Saremba ZEEOM
Monika Normant-Saremba,,
- Division of Experimental Ecology of Marine Organisms
, Dominika Saniewska ZChMiOŚM
Dominika Saniewska,,
- Division of Marine Chemistry and Environmental Protection
Journal seriesTalanta, ISSN 0039-9140
Issue year2018
Vol189
Pages534-542
Publication size in sheets1.25
Keywords in Englishmercury, fractionation, thermodesorption, methylmercury, macrofauna
DOIDOI:10.1016/j.talanta.2018.07.047
URL https://doi.org/10.1016/j.talanta.2018.07.047
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 18-07-2018, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 18-07-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.162 (2) - 2016=3.841 (5)
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