期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：170
期号：3
页码：032140
DOI：10.1088/1755-1315/170/3/032140
语种：English
出版社：IOP Publishing
摘要：Based on the content of soil Cd, Pb and Zn, this paper conducted a comprehensive evaluation on the contamination status of heavy metal in Ba-zhong using Nemerow index and potential ecological risk index, meaning to provide scientific theoretical basis for the future prevention and treatment. The results showed that the average content of Zn was slightly higher than the background value of hilly area in Sichuan while the other two was under the standard line. However, differences do exist among various sampling places. The contents of Cd could come to 5.7 times than background value in some places at most. Nemerow index showed that the heavy meyal pollution index of the soils of Ba-zhong was 1.0951 and closed to the clean state. Basically, Ba-zhong was at a low level of risk according to the potential ecological risk index.
