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Position: Home > Articles > 湘江长沙段重金属分布特征及污染评价 Hunan Agricultural Sciences 2018 (3) 63-66

湘江长沙段重金属分布特征及污染评价

作  者：
陈建;周俊驰;胡旷成;叶长城;铁柏清
关键词：
湘江;重金属;内梅罗指数法;污染评价
摘  要：
2016年7月至2017年3月对湘江长沙段水体镉、砷、铅及汞四种主要重金属污染物进行检测,并运用内梅罗指数法对重金属污染情况进行综合评价,结果表明,汞为湘江长沙段水体重金属污染物,所有取样断面检测数据总体超标率为70.59%,其他重金属含量较低,随着水流流向及采样时间的推移,各重金属污染物没有表现出明显的分布特征及规律;内梅罗指数法评价结果显示,作为饮用水源一级保护区的黑石铺和杜甫阁断面与二级保护区的坪塘断面污水域重金属污染状况属污染及重污染级别,作为工业用水区的丁字镇、霞凝港和三汊矶断面水质基本属于清洁级别,但也出现轻污染.
作  者：
CHEN Jian;ZHOU Jun-chi;HU Kuang-cheng;YE Chang-cheng;TIE Bo-qing;College of Resources and Environment, Hunan Agricultural University;Hunan Environmental Protection Agency;
关键词：
Xiangjiang river;;heavy-metal;;Nemerow index method;;pollution assessment
摘  要：
The heavy metal contaminants of cadmium, arsenic, lead and mercury in the Changsha section of the Xiangjiang River were measured from July 2000 to March 2017, and the pollution of heavy metals in the water body was evaluated by the Nemerow index method. The results showed that the total amount of heavy metal contaminants in the water body of Xiangjiang River in Changsha was 70.59%, and the content of other heavy metals was low. With the flow of water and the sampling time, the heavy metal pollutants didn't show obvious distribution characteristics and the law. Nemerow index method evaluation results showed that Heishipu and Dufuge section, as drinking water source protection areas, were polluted by heavy metal, and Pingtang town section, as secondary protected, was heavy polluted. As industrial water area, the water level of the three branches of Sanchaji, Xia Ning and Dingzi town water quality basically belong to the clean level, but also light polluted.

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