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首页> 外文期刊>Environmental Science & Technology >Tracing Mercury Contamination Sources in Sediments Using Mercury Isotope Compositions
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Tracing Mercury Contamination Sources in Sediments Using Mercury Isotope Compositions

机译：使用汞同位素组成追踪沉积物中的汞污染源

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摘要

Mercury (Hg) isotope ratios were determined in two sediment cores collected from two adjacent reservoirs in Guizhou, China, including Hongfeng Reservoir and Baihua Reservoir. Hg isotope compositions were also analyzed in a soil sample collected from the catchment of Hongfeng Reservoir and three cinnabar samples collected from the Wanshan Hg mine. Baihua Reservoir was contaminated with runoff from Guizhou Organic Chemical Plant (GOCP) when metallic Hg was used as a catalyst to produce acetic acid. Hongfeng Reservoir, located upstream of Baihua, receives Hg from runoff and atmospheric deposition. We demonstrated that δ~(202)Hg values relative to NIST 3133 of sediment in Baihua Reservoir ranging from -0.60 to -1.10‰ were distinctively different from those in Hongfeng Reservoir varying from -1.67 to -2.02‰. While sediments from both Baihua and Hongfeng Reservoirs were characterized by mass dependent variation (MDF), only Hongfeng Reservoir sediments were characterized by mass independent variation (MIF). Moreover, by using a binary mixing model, we demonstrated the major source of Hg in sediment of Hongfeng Reservoir was from runoff due to soil erosion, which was consistent with the conclusion obtained from a previous Hg balance study. This study demonstrates Hg isotope data are valuable tracers for determining Hg contamination sources in sediments.
机译：测定了从贵州两个相邻水库（包括洪峰水库和白花水库）收集的两个沉积岩心中的汞（Hg）同位素比。还分析了从红峰水库集水区收集的土壤样品和从万山汞矿采集的三个朱砂样品中的汞同位素组成。当金属汞用作催化剂生产乙酸时，百花水库被贵州有机化工厂（GOCP）的径流污染。位于白花市上游的洪峰水库通过径流和大气沉积物吸收汞。结果表明，百花水库沉积物相对于NIST 3133的δ〜（202）Hg值在-0.60至-1.10‰之间，与红峰水库在-1.67至-2.02‰之间存在显着差异。尽管百花山和洪峰水库的沉积物都具有质量依赖性变化（MDF），但只有洪峰水库的沉积物具有质量独立性变化（MIF）。此外，通过使用二元混合模型，我们证明了洪峰水库沉积物中汞的主要来源是土壤侵蚀造成的径流，这与之前的汞平衡研究得出的结论是一致的。这项研究表明，汞同位素数据是确定沉积物中汞污染源的有价值的示踪剂。

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  • 来源
    《Environmental Science & Technology》 |2010年第9期|P.3363-3368|共6页
  • 作者

    XINBIN FENG; rnDELPHINE FOUCHER; rnHOLGER HINTELMANN; rnHAIYU VAN; rnTIANRONG HE; rnGUANGLE QIU;

  • 作者单位

    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;

    rnDepartment of Chemistry, Trent University, 1600 West Bank Drive, Peterborough, Ontario, K9J 7BB, Canada;

    rnDepartment of Chemistry, Trent University, 1600 West Bank Drive, Peterborough, Ontario, K9J 7BB, Canada;

    rnState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;

    rnState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;

    rnState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 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);
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