洋河水库底泥重金属污染及其潜在生态危害评价

打开文本图片集

【摘    要】： 为了解洋河水库底泥沉积物中重金属含量及其潜在生态危害程度，共采集了21个底泥样品，测试了镉、汞、砷、铜、锌、铅、镍、铬共8种重金属元素，采用地积累指数法和潜在生态危害指数法进行分析和评价，结果表明，洋河水库部分区域底泥存在重金属污染。

【关键词】： 底泥；重金属污染；洋河水库；生态危害

【中图分类号】：X524 【文献标志码】：C 【文章编号】：1008-3197（2023）06-72-05

【DOI编码】：10.3969/j.issn.1008-3197.2023.06.020

Heavy Metal Pollution and Potential Ecological Hazard Assessment of

Yanghe Reservoir Sediment

LI Wei， WANG Xiao， FAN Ruipeng

（China Water Resources Beifang Investigation， Design and Research Co. Ltd.， Tianjin 300222， China）

【Abstract】：In order to understand the contents of heavy metals in the sediments of the Yanghe Reservoir and their potential ecological risk， 21 sediment samples were collected from the Yanghe Reservoir， and 8 heavy metals， including cadmium， mercury， arsenic， copper， zinc， lead， nickel and chromium， were tested. The geoaccumulation index method and the potential ecological risk index method were used to analyze and evaluate the heavy metal pollution of the Yanghe reservoir. The results showed that the sediments in some areas of Yanghe Reservoir were polluted by heavy metals.

【Key words】：sediment；heavy metal pollution；Yanghe Reservoir；ecological risk

沉积物是水库生态系统的重要组成部分，它不仅作为“汇”累积水体中重金属，当条件（氧化还原电位、温度、pH值、溶解氧等）改变时，又可作为“源”将重金属再次释放到水体中，对水生生物产生毒害，并通过食物链传递，对人体健康构成威胁[1]。（剩余3308字）