Total and methyl-mercury seasonal particulate fluxes in the water column of a large lake (Lake Geneva, Switzerland).

Environmental Science and Pollution Research International
Elena Gascón DíezJean-Luc Loizeau

Abstract

Concentrations and fluxes of total and methylmercury were determined in surface sediments and associated with settling particles at two sites in Lake Geneva to evaluate the sources and dynamics of this toxic contaminant. Total mercury concentrations measured in settling particles were different throughout the seasons and were greatly influenced by the Rhone River particulate inputs. Total mercury concentrations closer to shore (NG2) ranged between 0.073 ± 0.001 and 0.27 ± 0.01 μg/g, and between 0.038 ± 0.001 and 0.214 ± 0.008 μg/g at a site deeper in the lake (NG3). Total mercury fluxes ranged between 0.144 ± 0.002 and 3.0 ± 0.1 μg/m2/day at NG2, and between 0.102 ± 0.008 and 1.32 ± 0.08 μg/m2/day at NG3. Combined results of concentrations and fluxes showed that total mercury concentrations in settling particles are related to the season and particle inputs from the Rhone River. Despite an observed decrease in total mercury fluxes from the coastal zone towards the open lake, NG3 (~ 3 km from the shoreline) was still affected by the coastal boundary, as compared to distal sites at the center of the lake. Thus, sediment focusing is not efficient enough to redistribute contaminant inputs originating from the coastal zones, to the ...Continue Reading

References

Dec 1, 1984·Applied and Environmental Microbiology·G Compeau, R Bartha
Jul 11, 2002·The Science of the Total Environment·F Roos-BarracloughW Shotyk
Apr 2, 2003·Environmental Science & Technology·K R RolfhusJ P Hurley
Oct 1, 1987·Applied and Environmental Microbiology·E T Korthals, M R Winfrey
Oct 24, 2006·Environmental Monitoring and Assessment·Chris MarvinEd Sverko
May 9, 2012·Environmental Research·Robert P MasonElsie M Sunderland
Feb 9, 2013·Science·Jerry M ParksLiyuan Liang
Sep 13, 2013·Environmental Science & Technology·Cynthia C GilmourDwayne A Elias
Nov 2, 2016·Environmental Science & Technology·Elena Gascón DíezAndrea G Bravo
Oct 4, 2016·Environmental Science and Pollution Research International·Neil D GrahamJean-Luc Loizeau
Feb 6, 2017·International Journal of Environmental Research and Public Health·David KocmanMilena Horvat

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