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Influence of Eutrophication on the Distribution of Total Mercury and Methylmercury in Hydroelectric Reservoirs
Bo Meng; X. B. Feng; C. X. Chen; G. L. Qiu; J. Sommar; Y. N. Guo; P. Liang; Q. Wan
Corresponding AuthorX. B. Feng
2010
Source PublicationJournal of Environmental Quality
Volume39Issue:5Pages:1624-1635
Abstract
The distribution of mercury (Hg) and the characteristics of its methylation were investigated in Wujiangdu (WJD) and Yinzidu (YZD) reservoirs in Guizhou province, China. The two reservoirs are characterized by high and low levels of primary productivity, respectively. Mercury species in water samples from depth profiles in both reservoirs and from interface water in the WJD were analyzed each season during 2007. The concentrations of total Hg (HgT(unf)) and methylmercury (MeHgT(unf)) in unfiltered water samples from the WJD varied from 3.0 to 18 pmol dm(-3) and from 0.17 to 15 pmol dm(-3), respectively; ranges were 2.0 to 9.5 pmol dm(-3) for HgT(unf) and 0.14 to 2.2 pmol dm(-3) for MeHgT(unf) in the YZD. Elevated methylmercury concentrations in water samples from the bottom water and water sediment interface demonstrated an active net Hg methylation in the downstream reach of the WJD. There was no discernable Hg methylation occurring in the YZD, nor in the upstream and middle reaches of the WJD. The results suggest that high primary productivity resulting from cage aquaculture activities in the WJD is an important control on Hg methylation in the reservoir, increasing the concentrations of MeHg in water in the Wujiang River basin, southwestern China.
Subject Area环境地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/4961
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
环境地球化学国家重点实验室
Corresponding AuthorX. B. Feng
Recommended Citation
GB/T 7714
Bo Meng,X. B. Feng,C. X. Chen,et al. Influence of Eutrophication on the Distribution of Total Mercury and Methylmercury in Hydroelectric Reservoirs[J]. Journal of Environmental Quality,2010,39(5):1624-1635.
APA Bo Meng.,X. B. Feng.,C. X. Chen.,G. L. Qiu.,J. Sommar.,...&Q. Wan.(2010).Influence of Eutrophication on the Distribution of Total Mercury and Methylmercury in Hydroelectric Reservoirs.Journal of Environmental Quality,39(5),1624-1635.
MLA Bo Meng,et al."Influence of Eutrophication on the Distribution of Total Mercury and Methylmercury in Hydroelectric Reservoirs".Journal of Environmental Quality 39.5(2010):1624-1635.
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