攀西某工矿区农田土壤重金属污染特征及环境现状
Characteristics and environmental status of heavy metal pollution in farmland soil of an industrial and mining area in Panxi
刘敏 1吴勇 2刘瑶 3竹娜 2胡汪婷2
作者信息
- 1. 成都理工大学环境与土木工程学院,四川成都 610000;资阳环境科技职业学院,四川资阳 641300
- 2. 成都理工大学环境与土木工程学院,四川成都 610000
- 3. 中铁二院成都工程检测有限责任公司,四川成都 610000
- 折叠
摘要
采集攀西某工矿区透底河旁农田土壤,分析重金属Cr,Ni,Cu,Zn,Cd和Pb含量,探讨重金属间关系,评价其环境质量现状.相关性分析表明,Cr与Ni相关性极为显著,判定系数为0.371＜0.4,说明Cr的含量不仅受Ni的影响,还受其它金属影响;Pb与Ni、Cr及Cr与Zn、Cd相关性不显著,表现出一定异源性.单因子指数显示,仅Pb污染水平表现为清洁.根据6种重金属的单因子污染指数平均值大小,得出研究区土壤受重金属污染程度为:Ni＞Cd＞Cr＞Zn＞Cu＞Pb.内梅罗污染综合指数最大值为5.87,最小值为1.01,平均值为3.03;在52个样本中59.61％的样本属于中度污染水平,30.77％的样本属于重度污染水平,9.62％的样本属于轻度污染水平,.整体上研究区土壤环境质量属于重度污染.
Abstract
The contents of heavy metals Cr,Ni,Cu,Zn,Cd and Pb were analyzed in the farmland soil near a permeable river in a mining area of Panxi,and the relationship between heavy metals was discussed.The correlation analysis shows that the correlation between Cr and Ni is very significant,and the determination coefficient is 0.371＜0.4,indicating that the con-tent of Cr is not only affected by Ni,but also by other metals.Pb has no significant correlation with Ni,Cr and Cr with Zn and Cd,showing a certain heterogenicity.The single factor index shows that only Pb pollution level is clean.According to the av-erage value of single factor pollution index of 6 kinds of heavy metals,the degree of heavy metal pollution of soil in the study area is Ni＞Cd＞Cr＞Zn＞Cu＞Pb.The maximum value of Nemero pollution composite index was 5.87,the minimum value was 1.01,and the average value was 3.03.Among the 52 samples,59.61％belong to the moderate pollution level,30.77％belong to the severe pollution level,and 9.62％belong to the mild pollution level.On the whole,the soil environ-mental quality in the study area is seriously polluted.
关键词
农田土壤/重金属/污染特征/环境评价Key words
farmland soil/heavy metal/pollution characteristics/environmental assessment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据