| 湘江衡阳段重金属在水体、悬浮颗粒物及表层沉积物中的分布特征研究 |
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| 引用本文： | 秦延文,韩超南,张雷,郑丙辉,曹伟.湘江衡阳段重金属在水体、悬浮颗粒物及表层沉积物中的分布特征研究[J].环境科学学报,2012,32(11):2836-2844. |
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| 作者姓名： | 秦延文 韩超南 张雷 郑丙辉 曹伟 |
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| 作者单位： | 中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012 中国环境科学研究院国家环境保护河口与海岸带环境重点实验室,北京100012 |
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| 基金项目： | 国家水体污染与控制重大专项(No.2009ZX07528-002, 2012ZX07503-002) |
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| 摘 要： | 采用ICP-MS研究湘江衡阳段上覆水、悬浮颗粒物、表层沉积物及孔隙水中重金属的含量及分布特征.结果表明,湘江衡阳段主要的重金属污染元素是Cd,上覆水中Cd的平均含量为0.26μg·L-1,高于美国水质基准的持续基准浓度CCC(USEPA2009),已经对部分水生生物表现出潜在的毒性效应;悬浮颗粒物和表层沉积物中Cd的富集含量较高,分别为42.03μg·g-1和29.62μg·g-1,达到加拿大淡水沉积物保护准则最初影响水平TEL的70倍和50倍,其中,从沉积物中取得的孔隙水中Cd平均含量为3.8μg·L-1,该值是CCC的15倍甚至高于最大基准浓度(CMC),已经对部分水生生物表现出实际的急性毒性效应.湘江衡阳段重金属的空间分布特征表现为中下游污染较上游严重,在衡阳水口山地区等污染企业密集区,重金属含量较高,表明人类活动输入已经成为湘江重金属的重要来源.研究结果还表明,悬浮颗粒物及沉积物相作为水体重金属污染物的主要赋存介质,对重金属污染的迁移、沉积、转化及生物富集作用具有决定性的意义,其重要性不容忽视.
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| 关 键 词： | 表层沉积物 悬浮颗粒物 孔隙水 上覆水 重金属污染 湘江衡阳段 |
| 收稿时间： | 2012/1/11 0:00:00 |
| 修稿时间： | 2012/2/18 0:00:00 |
Distribution of heavy metals among surface water, suspended solids and surface sediments in Hengyang section of Xiangjiang River |
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| QIN Yanwen,HAN Chaonan,ZHANG Lei,ZHENG Binghui and CAO Wei.Distribution of heavy metals among surface water, suspended solids and surface sediments in Hengyang section of Xiangjiang River[J].Acta Scientiae Circumstantiae,2012,32(11):2836-2844. |
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| Authors: | QIN Yanwen HAN Chaonan ZHANG Lei ZHENG Binghui and CAO Wei |
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| Institution: | 1. National Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. State Environmental Protection Key Laboratory of Estuary and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012;1. National Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. State Environmental Protection Key Laboratory of Estuary and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012;1. National Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. State Environmental Protection Key Laboratory of Estuary and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012;1. National Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. State Environmental Protection Key Laboratory of Estuary and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012;1. National Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. State Environmental Protection Key Laboratory of Estuary and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012 |
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| Abstract: | |
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| Keywords: | surface sediment suspended solids pore water surface water pollution of heavy metal Hengyang section of Xiangjiang River |
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