洋涌河、茅洲河和东宝河沉积物中重金属的污染及评价

根据重金属环境化学行为的特点,应用沉积学原理,对深圳三条河流沉积物中的重金属进行了研究,采用Lars Hakanson指数法对重金属的潜在生态危害进行了评价,研究结果表明,即使按当地最高背景值为参比值计算,三条河流都受到重金属的严重污染,多数河段属于强的生态危害,少数河段属于中等生态危害。

POLLUTION AND ASSESSMENT OF HEAVY METALS IN YANGCHONG RIVER,MAOZHOU RIVER AND DONGBAO RIVER SEDIMENTS,SHENZHEN

Sediment can reflect the condition of water system", sediments are indicator of heavy metal pollution in water system. According to the chrematistics of heavy metals environment-chemistry behavior and principle of sedimentology, we studied the heavy metal pollution of Yangchong river, Maozhou river and Dongbao river sediments in Shenzhen, and the index Lars Hakanson, who is a Sweden scientist, was used to assess the heavy metal's potential ecology risk. The study shows that, even the maximum background in the region was used in the index calculate, the results of this three river were polluted severely by heavy metal, and most sections were belong to strong po-tential ecology risk, few section belong to middle potential ecology risk.