Mercury distribution, speciation and flux in the Sepetiba Bay tributaries, SE Brazil
作者： Heloisa Helena M. Paraquetti , Gisele A. Ayres , Marcelo Dominguez de Almeida , Mauricio M. Molisani , Luiz Drude de Lacerda
DOI: 10.1016/J.WATRES.2003.11.039
关键词:
摘要: Abstract Dissolved gaseous Hg, reactive total dissolved Hg and particulate concentrations were measured in samples of majors tributaries the Sepetiba Bay, SE Brazil (Itimirim, Itingucu, Guarda, Guandu, Sao Francisco Ita rivers), dry rainy seasons. The average found varied from 0.02 to 0.18 ng L −1 for 0.1 18.1 ng L 66.6 ng L 0.3 250 ng L Hg. During season, a decrease an increase was observed. Positive correlations between ( r =0.99), TSS =0.82) =0.95). instantaneous fluxes among rivers 412 μg s 0.03 12,572 μg s log K d 3.76 6.43 showed significant season following concentrations. These results suggest that erosion runoff are major pathways transport eventually Bay.
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