摘要
通过测定喀什市农田土壤中的重金属Cr、Cu、Pb、Zn、Cd含量,利用单因子污染指数法和内梅罗综合污染指数法,结合喀什市土壤背景值及国家标准(GB 15618-1995),进行重金属污染评价。结果表明,喀什市农田土壤中重金属Cr、Cu、Pb、Zn的含量分别为109.6、36.9、34.3、100.1 mg/kg,Cd未检测出。以国家土壤环境质量标准(二级)为标准评价,各元素的污染指数排序为Cr>Zn>Cu>Pb,综合污染指数为0.465,污染程度为安全。
This Based on the determination of Kashgar in the farmland soil heavy metal Cr,Cu,Pb,Zn,Cd content,using the single factor contaminant indexmethod and inside Nemerow Pollution Index method,combined with a predominantly soil background values and national standard(GB15618-1995),heavy metal pollution evaluation. Results show that the city of farmland soil heavy metal content of Cr 109.6 mg / kg,Cu 36.9 mg / kg,Pb 34.3 mg / kg,Zn 100.1 mg / kg,however,Cd was not detected. With the state soil environment quality standard(level 2) as evaluation standard, the pollution index of each element ordering for Cr>Zn>Cu>Pb,the comprehensive pollution index is 0.465,pollution levels for safety.
出处
《湖北农业科学》
2016年第15期3891-3893,3896,共4页
Hubei Agricultural Sciences
基金
喀什大学青年专项课题[(13)2480]
教育部本科专业综合改革试点资助项目(ZG0548)
关键词
农田土壤
重金属
污染
评价
farmland soil
heavy metal
pollution
evaluaton
