| The concentrations and distribution of mercury in aquatic ecosystem of Baihua Reservoir |
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| 作者姓名： | YAN Haiyu |
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| 作者单位： | [1]State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China [2]Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| 基金项目： | through an innovation project，中国科学院资助项目 |
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| 摘 要： | 1Introduction Thebiogeochemicalcycleofmercuryinaqueous systemisthekeyfactorleadingtotheexpansionof mercurypollutiononaglobalscaleandthesafetyof fishconsumers.Dissolvedgaseousmercury(DGM)e vasionisconsideredasoneofthemostimportantmer curysourcesforatmosphere.Atthesametime,this procedurewillreducetheHgburdeninthewatercol umnandmaythusdecreasemethylmercuryproduction andaccumulationinfish(Nriagu,1994).TheBaihua ReservoirissituatedinGuizhouProvince,andithas sufferedseriousmercurycontaminationfr…
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| 关 键 词： | 水银 水生生态系统 水库 生物地球化学 水体环境 |
| 收稿时间： | 1 September 2009 |
The concentrations and distribution of mercury in aquatic ecosystem of Baihua Reservoir |
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| Haiyu Yan,Xinbin Feng,Hongmei Jiang,Guangle Qiu,Guanghui Li,Lihai Shang.The concentrations and distribution of mercury in aquatic ecosystem of Baihua Reservoir[J].Chinese Journal of Geochemistry,2005,24(4):377-381. |
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| Authors: | Haiyu Yan Xinbin Feng Hongmei Jiang Guangle Qiu Guanghui Li Lihai Shang |
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| Institution: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Graduate School of the Chinese Academy of Sciences, 100039 Beijing, China |
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| Abstract: | Mercury species in water column, sediment and fish from the Hg-contaminated Baihua Reservoir were measured by trap pre-concentration and CVAFS and CVAAS detection methods. The results showed that the highest average total Hg concentration is up to 73.36 ng/L in the water column, 186.7 ng/L in pore water of surface sediment in the Baihua Reservoir. The total mercury concentrations in the sediments range from 0.87 to 33.74 mg/kg. This suggests that sediment re-suspending and Hg input from the upstream organochemical plant are the main mercury sources of water body for this reservoir. In addition, the possible reason why mercury is low in fish is that the low DOC and high pH are infavarable to methylmercury formation or absorption by fish. |
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| Keywords: | concentration and distribution mercury species reservoir aquatic ecosystem |
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