摘要
通过测定第二松花江中下游水体中重金属的含量,探讨了水体重金属的分布特征,并采用潜在生态危害指数法对沉积物中重金属的潜在生态风险进行了评价。结果表明,水中重金属含量较低,沉积物中重金属含量均远高于该河段水中重金属含量;水和沉积物重金属含量沿程变化规律一致,即在市区河段中的含量远高于非市区河段;沉积物重金属呈现中等至极强的生态风险,以Hg和Cd的生态风险为主。
By analyzing the content of heavy metals of water substance in middle and lower reaches of Second Songhua River, the distribution characteristics of heavy metals were discussed and potential ecological risk of heavy metals in sediment was assessed by the method of potential ecological risk index. Results indicated that the content of heavy metals in water was relatively low, while that of sediment was relatively high. The concentration variation of heavy metals in waters and in sediments along the reach was the same, with the content higher in urban reach than in suburban reach. Potential ecological risk of heavy metals in sediment exhibits middle to very strong, with mercury and cadmium as priority risk.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2009年第5期168-172,共5页
Environmental Science & Technology
基金
中国地质调查局国土资源调查项目(12120511208)
关键词
第二松花江
沉积物
重金属
潜在生态风险
Second Songhua River
sediment
heavy metal
potential ecological risk
