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首页> 外文期刊>Fresenius Environmental Bulletin >RISK EVALUATION OF HEAVY METALS IN THE SURFACE SEDIMENTS OF LAKE CHAOHU IN CHINA
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RISK EVALUATION OF HEAVY METALS IN THE SURFACE SEDIMENTS OF LAKE CHAOHU IN CHINA

机译：中国巢湖表层沉积物中重金属的风险评价。

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摘要

In order to assess heavy metal concentrations in Lake Chaohu, which is one of the most polluted lakes in China, nine representative sampling sites were selected. Surface sediments from 0 to 20 cm were sampled with a Beeker sampler and total content of Cu, Zn, Pb, Cd and Ni in surface water was analyzed using flame or graphite furnace atomic absorption spectrometry. Sediment characterization mainly included acid volatile sulphide (AVS) and simultaneously extracted metals (SEM). The potential risk of heavy metals was assessed by several indexes: (1) Partition Coefficient (K_d), which is a ratio concentrations of a pollutant in sediment (Cs) and in water (Cw). (2) Sediment quality guidelines (SQGs), which provide a reliable basis for assessing sediment quality conditions in freshwater ecosystems; and (3) SEM-AVS, which is the difference between the molar concentrations of SEM and AVS. The results indicated that Cu pollution and Cd pollution were serious, anthropogenic inputs were a more important factor, while the risk of heavy metal contamination was low.
机译：为了评估巢湖（中国最污染的湖泊之一）中的重金属浓度，选择了九个代表性采样点。使用Beeker采样器对0至20 cm的表面沉积物进行采样，并使用火焰或石墨炉原子吸收光谱法分析地表水中的Cu，Zn，Pb，Cd和Ni的总含量。沉积物表征主要包括酸性挥发性硫化物（AVS）和同时提取的金属（SEM）。重金属的潜在风险通过几个指标进行了评估：（1）分配系数（K_d），即沉积物中（Cs）和水中（Cw）中污染物的比率浓度。 （2）沉积物质量准则，为评估淡水生态系统中的沉积物质量状况提供可靠的依据； （3）SEM-AVS，即SEM和AVS的摩尔浓度之差。结果表明，铜污染和镉污染严重，人为输入是更重要的因素，而重金属污染的风险较低。

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  • 来源
    《Fresenius Environmental Bulletin》 |2013年第7期|1807-1813|共7页
  • 作者

    Fei Liu; Dao-Gui Deng; Wei Yang; Yuan-Qi Shao; Peng-Fei Zhu; Lei Ji;

  • 作者单位

    Anhui Key Laboratory of Plant Resources and Biology, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, China;

    Huaibei Normal University College of Life Science Anhui Key Laboratory of Plant Resources and Biology Huaibei, 235000 P.R. CHINA;

    Anhui Key Laboratory of Plant Resources and Biology, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, China;

    Anhui Key Laboratory of Plant Resources and Biology, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, China;

    Anhui Key Laboratory of Plant Resources and Biology, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, China;

    Anhui Key Laboratory of Plant Resources and Biology, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, China;

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  • 正文语种 eng
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  • 关键词

    Heavy Metals; Simultaneously Extracted Metals (SEM); Surface Sediments; Risk; Partition Coefficient; Lake Chaohu;

    机译：重金属;同时提取金属（SEM）;表层沉积物;风险;分配系数;巢湖;

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