岷江(成都河段)水系沉积物中重金属污染监测与评价

Evaluation of the Heavy Metals Pollution in the Surface Sediments in Chengdu Section of the Min River

应用地累积指数法对岷江(成都河段)10个监测点表层水系沉积物中重金属污染程度进行了连续7年(1997-2003)的监测与评价分析。结果表明,水系沉积物中重金属的地累积指数排列顺序是:Cd>Zn>Cu>Pb>Ni。在1998年时水系沉积物中重金属含量出现峰值现象,其中Cd污染较为严重,污染程度为中-强,Zn和Cu污染程度为无-中,Pb和Ni基本上没有受到污染。

The heavy metal pollution in Chengdu section surface sediment of the Min River was studied with index of Geoaecu- mulation（Igeo）for seven years（1997-2003）. The results showed that the index of heavy metals in the surface sediment of the order is：Cd 〉Zn〉Cu〉Pb〉Ni. In 1998,the heavy metals in surface sediment showed the peaks phenomenon, the more serious pollution was Cd ,the pollution leave was medium to strong,the pollution leave of Zn and Cu was nought to medium,Pb and Ni were unpolluted.