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首页> 外文期刊>Environmental pollution >Mercury mass balance study in Wujiangdu and Dongfeng Reservoirs, Guizhou, China
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Mercury mass balance study in Wujiangdu and Dongfeng Reservoirs, Guizhou, China

机译：贵州吴江渡和东风水库中汞的质量平衡研究

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摘要

From October 2003 to September 2004, we conducted a detailed study on the mass balance of total mercury (THg) and methylmercury (MeHg) of Dongfeng (DF) and Wujiangdu (WJD) reservoirs, which were constructed in 1992 and 1979, respectively. Both reservoirs were net sinks for THg on an annual scale, absorbing 3319.5 g km~(-2) for DF Reservoir, and 489.2 g km~(-2) for WJD Reservoirs, respectively. However, both reservoirs were net sources of MeHg to the downstream ecosystems. DF Reservoir provided a source of 32.9 g MeHg km~(-2) yr~(-1), yielding 10.3% of the amount of MeHg that entered the reservoir, and WJD Reservoir provided 140.9 g MeHg km~(-2) yr~(-1), yielding 82.5% of MeHg inputs. Our results implied that water residence time is an important variable affecting Hg methylation rate in the reservoirs. Our study shows that building a series of reservoirs in line along a river changes the riverine system into a natural Hg methylation factory which markedly increases the %MeHg in the downstream reservoirs; in effect magnifying the MeHg buildup problem in reservoirs.
机译：从2003年10月到2004年9月，我们对分别建于1992年和1979年的东风（DF）和乌江渡（WJD）水库的总汞（THg）和甲基汞（MeHg）的质量平衡进行了详细研究。两个水库都是THg的年净汇，DF水库分别吸收3319.5 g km〜（-2），WJD水库分别吸收489.2 g km〜（-2）。但是，这两个储层都是下游生态系统的甲基汞的净来源。 DF水库提供了32.9 g MeHg km〜（-2）yr〜（-1）的源，占进入水库的MeHg量的10.3％，WJD水库提供了140.9 g MeHg km〜（-2）yr〜（-1）。 （-1），产生82.5％的MeHg输入。我们的结果表明，水的停留时间是影响储层中汞甲基化率的重要变量。我们的研究表明，沿河流建造一系列水库将河流系统变成天然的汞甲基化工厂，从而显着增加了下游水库中的％MeHg。实际上会放大储层中的MeHg堆积问题。

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  • 来源
    《Environmental pollution》 |2009年第10期|2594-2603|共10页
  • 作者

    Xinbin Feng; Hongmei Jiang; Guangle Qiu; Haiyu Yan; Guanghui Li; Zhonggen Li;

  • 作者单位

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China;

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China;

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China;

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China;

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China;

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    mercury methylation; methylmercury; mass balance; precipitation; reservoir;

    机译：汞甲基化甲基汞质量平衡;沉淀;水库;

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