环境保护科学2018，Vol.44Issue(2)：116-122,7.DOI:10.16803/j.cnki.issn.1004-6216.2018.02.022
湘潭市锰矿工业区某渠道重金属污染特征
Study of the Characteristics of Heavy Metals Pollution in a Ditch of the Manganese Ore Industrial Zone of Xiangtan City
杨添奇 1余彬 1纪智慧 1成一知 1王伟 1王英杰1
作者信息
- 1. 湖南新九方科技有限公司,湖南 株洲 412000
- 折叠
摘要
Abstract
In this study, the concentrations of heavy metals such as Mn, Cd, Pb, Zn and Cr in the thirteen sediment samples from a ditch of the manganese ore industrial zone of Xiangtan City were analyzed, and geo-accumulation index (Igeo) and potential ecological risk index (RI) were used to evaluate the pollution status. The results indicated that the average values of w (Cd), w (Mn), w (Pb), w (Zn) and w (Cr) in the sediments were all higher than the standard values regulated in the provisions for the evaluation technologies of the national soil pollution status, with the average values of 107.1, 31.42, 15.28, 7.44 and 3.32 times respectively of the standard values. The values of Igeoin the sediments were ranked in the order of Cd>Mn>Pb>Zn>Cr. The values of Igeoof Cd and Mn were 4.65 and 3.34 respectively. The values of Itotpresented in the order of 9#>8#>3#>6#>5#>1#>7#>4#>2#>11#>12#>13#>10#, and the values of Itotat 8# and 9# of the sampling points were both over 20.0. Evaluation results of RI showed that the effect degrees of the pollutants on the ecological hazard risks to the ditches were ranked in the order of Cd >Pb >Mn >Zn >Cr. The average RI was 3 316.58 (ranging from 64.63 to 19 974.64),indicating an extremely serious ecological risk.关键词
重金属/沉积物/地积累指数法/潜在生态风险指数法Key words
Heavy Metal/Sediment/Geo-accumulation Index/Potential Ecological Risk Index分类
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杨添奇,余彬,纪智慧,成一知,王伟,王英杰..湘潭市锰矿工业区某渠道重金属污染特征[J].环境保护科学,2018,44(2):116-122,7.
