连云港市化工区土壤中重金属含量的研究

Study on Heavy Metal Content in Soil of Lianyungang Chemical Industry Zone

本文对连云港市化工区排污口周边土壤进行了采样、重金属含量检测和数据分析,发现化工区排污口周边土壤中存在重金属污染:1号样中除Cr和As外,其余重金属含量均处于超标污染,尤其是Cu (P_i=5. 29)、 Pb (P_i=2. 59)、 Cd (P_i=2. 367)和Hg (P_i=2. 34)都是重度或中度污染, Zn (P_i=1. 14)和Ni (P_i=1. 57)处于轻度污染;2号样和3号样中污染程度降低,但Cu、Zn、Cd和Ni的P_i值仍然大于0.7,处于安全警戒状态或轻度污染。

In this paper,We sampled the soil near the sewage outlet in Lianyungang chemical industry district,and then we detected and analyzed the heavy metal content in the samples.We found the heavy metal pollution exsting in this area：lst sample,besides the Cr and As, it has the excessive pollution of heavy metal,especially Cu （Pi=5.29）,Pb （Pi = 2.59）, Cd （Pi = 2. 367） and Hg （Pi = 2.34） are severe or moderate pollution, Zn （Pi = 1.14） and Ni （Pi = 1.57 ） are mild contamination;The pollution degree of sample 2 and sample 3 was decreased,but the Pi values d Cu,Zn,Cd and Ni were still greater than 0.7,and they were in a state of safety alert or mild contamination.