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[1]刘亚宾 许云海 张海涛 杨海君**.湘西花垣县主要地表河流水重金属污染特征及健康风险评价*[J].应用与环境生物学报,2018,24(03):1-11.[doi:10.3724/SP.J.1145.2017.08035]
 LIU Yabin,XU Yunhai,ZHANG Haitao&YANG Haijun**.Assessment of heavy metal pollution and health Risk in main surface river in Huayuan County of Xiangxi, Hunan province*[J].Chinese Journal of Applied & Environmental Biology,2018,24(03):1-11.[doi:10.3724/SP.J.1145.2017.08035]
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湘西花垣县主要地表河流水重金属污染特征及健康风险评价*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年03期
页码:
1-11
栏目:
研究论文
出版日期:
2018-06-25

文章信息/Info

Title:
Assessment of heavy metal pollution and health Risk in main surface river in Huayuan County of Xiangxi, Hunan province*
文章编号:
201708035
作者:
刘亚宾 许云海 张海涛 杨海君**
湖南农业大学植物保护学院 长沙 410128
Author(s):
LIU Yabin XU Yunhai ZHANG Haitao&YANG Haijun**
College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
关键词:
湘西花垣地表河流水重金属含量风险评价主成分分析
Keywords:
Huayuan County in Xiangxi surface river water heavy metal content risk assessment principal component analysis
DOI:
10.3724/SP.J.1145.2017.08035
摘要:
为探明湘西花垣县主要地表河流水重金属污染的程度,评估河流地表水的健康风险,本研究于2016年8月、12月分别采取花垣县主要河流花垣河与兄弟河11个点位地表水水样,对水样中重金属Pb、Zn、Cr、Cu、Fe、Ni进行监测,并采用美国环境保护局(USEPA)推荐的健康风险评价模型,对花垣县主要地表河流水中的重金属进行健康风险评价。研究结果表明:研究区地表水中Pb、Zn、Cr、Cu、Fe与Ni的含量(mg/L)分别为2.57×10-3、4.66×10-4、1.65×10-3、6.27×10-4、0.19、8.50×10-4。研究区地表水中重金属产生的健康风险较高,化学致癌物(Cr)的健康风险值高于化学非致癌物质(Pb、Zn、Cu、Ni)5~6个数量级,研究区化学非致癌物质产生的健康风险均值大小为Pb>Cu>Zn>Ni。地表水相关性及主成分分析表明,花垣县主要地表河流水中6种重金属元素由3个主成分组成,第一主成分Fe与Ni的贡献率为33.28%,主要来源于内源;第二主成分Cu与Cr的贡献率为26.98%,主要来源于重金属采选与冶炼企业产生的工业外排废水或雨水淋溶矿物废渣;第三主成分Zn的贡献率为17.10%,来源于地球化学行为。本研究表明湘西花垣县主要地表河流水由重金属引起的健康风险值较高,研究区重金属污染物的优先控制顺序为:Cr>As>Cu>Pb>Mn(图2 表7参26)。
Abstract:
Objectives:To research heavy metal pollution?and assess the health risk of surface river water in Huayuan County of XiangXi,11 surface water samples were respectively collected in August and December 2016 such as Huayuan river and Brother river. The concentrations of heavy metals (Pb, Zn, Cr, Cu, Fe and Ni) were measured from the samples. Methods:The health risk assessment model recommended by the U.S. environmental protection agency (USEPA) was applied to assess the health risk of heavy metals in the main surface river waters of Huayuan County. Results: The results indicated that the concentrations (mg/L) of heavy metals (Pb, Zn, Cr, Cu, Fe and Ni) of surface water in the research area were respectively 2.57×10-3、4.66×10-4、1.65×10-3、6.27×10-4、0.19、8.50×10-4. The health risk of surface water of heavy metals was really high. Thereinto, the health risk index of chemical carcinogenic substance (Cr) was five or six times higher than the chemical non-carcinogens (Pb, Zn, Cu, Ni)?; The average of the health risk indices of non-carcinogenic substances was in the order: Pb>Cu>Zn>Ni.The correlation of surface water and the analysis of principal component showed that the six heavy metals elements were composed of three main components in the main surface rivers of the county. The first principal component were Fe and Ni, whose contents was 33.28%, mainly from internal pollution; The second were Cu and Cr, whose contents was 26.98%. Industrial waste water or rainwater leaching mineral waste produced by heavy metal mining and smelting enterprises were the main pollution sources; The third resulted from geochemical pollution was Zn, whose contents was 17.10%.Conclusions:The health risk indices triggered by heavy mental in the surface water was really high. The heavy metal pollutants in the research area needed to be controlled, and the order was Cr > As > Cu > Pb > Mn.

备注/Memo

备注/Memo:
收稿日期:2017-08-27 接受日期:2017-09-19
*湖南省自然科学基金资助项目(No.2016JJ5015);2016年湖南省花垣县重金属污染环境与健康专项资助项目(湘财建指[2016]49号)资助
**通讯作者(E-mail:1227677453@qq.com)
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更新日期/Last Update: 2017-11-16