| 湘江岳阳段沉积物重金属污染特征及其初步生态风险评估 |
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| 引用本文： | 曾祥英,王晨,于志强,秦延文,张雷,盛国英,傅家谟.湘江岳阳段沉积物重金属污染特征及其初步生态风险评估[J].地球化学,2012(1):63-69. |
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| 作者姓名： | 曾祥英 王晨 于志强 秦延文 张雷 盛国英 傅家谟 |
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| 作者单位： | [1]有机地球化学国家重点实验室,广东省环境资源利用与保护重点实验室,中国科学院广州地球化学研究所,广东广州510640 [2]中国科学院研究生院,北京100049 [3]中国环境科学研究院河流与海岸带环境创新基地,北京100012 |
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| 基金项目： | 国家科技重大专项（2009ZX07528-002）：国家重点基础研究发展计划项目（2008CB418205）本研究得到国家科技重大专项（2009ZX07528-002）和国家重点基础研究发展计划项目（2008CB418205）经费的支持,在此致谢. |
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| 摘 要： | 分析了湘江岳阳段表层沉积物样品中10种典型重金属元素(Cd、Cu、Pb、Zn、Cr、Tl、V、Mn、Co和Ni)的含量水平和分布规律,并采用地累积指数法和潜在生态风险指数法,初步评价了沉积物中重金属污染状况和潜在生态风险。研究结果表明:(1)湘江岳阳段沉积物中重金属Cd、Zn、Mn和Cu等污染较为严重,其含量范围分别为8.56～19.4 mg/kg、250～367 mg/kg、1489～2258 mg/kg和40.5～64.7 mg/kg;(2)研究区域中多种重金属潜在生态风险指数(RI)为369～698,表明研究区域沉积物重金属污染导致的潜在生态风险高,且主要风险污染物为Cd和Tl;(3)湘江岳阳段沉积物呈现出以Cd为主的多种重金属复合污染特征。
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| 关 键 词： | 重金属 沉积物 湘江岳阳段 地累积指数 潜在生态风险指数法 |
The occurrence, distribution and preliminary risk assessment of heavy metals in sediments from Xiangjiang River （Yueyang Section） |
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| ZENG Xiang-ying,WANG Chen,YU Zhi-qiang,. QIN Yan-wen,ZHANG Lei,SHENG Guo-ying,FU Jia-mo.The occurrence, distribution and preliminary risk assessment of heavy metals in sediments from Xiangjiang River （Yueyang Section）[J].Geochimica,2012(1):63-69. |
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| Authors: | ZENG Xiang-ying WANG Chen YU Zhi-qiang QIN Yan-wen ZHANG Lei SHENG Guo-ying FU Jia-mo |
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| Institution: | 1( 1. State Key Laboratory of Orgartic Geochemistry, Guangdong Key Laboratory of Environment arid Resources, Guartgzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3. River and Coastal Etreironmental Research Center, Chinese ResearchAcademy of Environmental Scienes, Beijing 100012, China) |
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| Abstract: | The occurrence and distribution of 10 heavy metals, Cd, Cu, Pb, Zn, Cr, Tl, V, Mn, Co and Ni in sediments collected from Xiangjiang River （Yueyang section） were analyzed. Meanwhile the potential ecological risks of these heavy metals were calculated and assessed using Index of geoaccumulation （Igco） as well as Lars Hanson method based on concentrations measured in this study. The results indicated that （1） Xiangjiang River （Yueyang section） was heavily polluted by Cd, Zn, Mn and Cu, with concentrations ranging from 8.56 19.4 mg/kg, 250 367 mg/kg, 1489 2258 mg/kg and 40.5 64.7 mg/kg, respectively; （2） RI values in this area varied from 369 to 698, implying high ecological risks in most of the sampling sites in the studied area, which were mainly from Cd and T1; （3） The pollution characteristic of multi-metals in this section was mainly related to Cd. |
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| Keywords: | heavy metal sediment Xiangjiang River （Yueyang Section） index of geoaccumulation lars hanson method |
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