广西近岸海域沉积物中重金属污染评价

根据 2 0 0 0年的监测资料 ,采用地积累指数法和潜在生态危害指数法对广西近岸海域重金属的污染状况进行评价。结果显示 ,广西近岸海域表层沉积物中Cu、Pb、Cd、Cr、As和Hg的地积累指数均小于 0 ,属清洁级 ;其潜在生态危害指数均小于 95 ,潜在生态危害轻微。但江河入海口附近海区重金属污染较严重 ,其潜在生态危害也较大 ;As为评价区域的主要污染因子 ,其中南流江口和大风江口表层沉积物中As分别为偏中等污染和轻度污染 ,南流江口As的潜在生态危害达中等危害水平

The assessment on the pollution of heavy metals in sediment of Guangxi Inshore

Based on the monitoring data obtained from Guangxi inshore in 2000, potential ecological risk index ( RI ) and the geoaccumulation index ( I geo) were applied for assessing the pollution of heavy metals in Guangxi inshore. The results showed that the I geo were lower than zero ,and the RI were lower than 95 too. The potential ecological risk (PER) of heavy metals was low in Guangxi Inshore but relatively high in the shallow sea of river estuary . As was the cardinal pollutant among the Cu,Pb,Cd,As,Cr and Hg in Guangxi inshore.