保定市郊土壤重金属污染现状调查及其评价

The survey and evaluation of heavy metal pollution in suburban soil of Baoding city

通过对保定市郊污灌区、清灌区土壤及植物体内重金属Pb、Cd、Cu、Zn含量的检测分析。结果表明 :保定市郊污灌区土壤及植物体内重金属含量明显高于清灌区 ;综合评价表明保定市郊土壤中Cd、Zn污染指数分别为 1.6 4 7、1.72 8,达轻度污染水平 ,综合污染指数为 1.5 4 4 。

The heavy metals Pb,Cd,Cu,Zn in waste water irrigated and fresh water irrigated soil and plants were examined and analyzed in the suburban soil of Baoding. The results showed that contents of heavy metals in waste water irrigated area were obviously higher than those in fresh water irrigated area. The synthetic evaluation showed that the polluted index of Cd, Zn in soil was 1.647,1.728 and it was polluted lightly. The synthetic polluted index of soil was 1.544 and it was polluted lightly too.