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| Muresan, B; Cossa, Daniel; Richard, Sophie; Dominique, Y. |
| The distribution and speciation of mercury (Hg) in the water column, the inputs (wet deposition and tributaries) and the outputs (atmospheric evasion and outlet) of an artificial partially anoxic tropical lake (Petit-Sa-Lit reservoir, French Guiana) were investigated oil a seasonal basis in order to appraise the cycling and transformations of this metal. The total mercury (HgT) concentrations in the oxygenated epilimnetic waters averaged 5 +/- 3 pmol L-1 in the unfiltered samples (HgTUNF) and 4 +/- 2 pmol L-1 in the dissolved (HgTD) phase (< 0.45 mu m). On average, the monomethylmercury (MMHg) constituted 8%, 40%, and 18% of the HgT in the dissolved phase, tile particulate suspended matter and in tile unfiltered samples, respectively. Covariant elevated... |
| Tipo: Text |
Palavras-chave: Tropical environment; Artificial reservoir; Methylmercury; Mercury. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4198.pdf |
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