摘要
通过对昆明呈贡区某一实验样地人为添加Pb、Cd污染,分别研究Pb添加组和Cd添加组土壤磁性参数与重金属浓度的关系,采用单因子污染指数和内梅罗综合污染指数法进行污染评价。结果表明,实验样地Pb、Cd达重度污染,Cu、Zn、As、Cr和Hg为轻微至中度污染。利用Pearson相关和主成分分析方法探讨人为Pb、Cd污染条件下土壤磁性参数(低频质量磁化率χ_(lf)、频率质量磁化率χ_(fd)%、非磁滞剩磁ARM、饱和等温剩磁SIRM)与重金属含量的相关关系。结果表明,各对照组χ_(lf)与Cu和Zn均呈极显著正相关关系。Pb添加组中,SIRM与Pb浓度呈极显著负相关,Cd添加组,χ_(fd)%与Cd浓度呈极显著正相关。
An experimental plot in Chenggong District of Kunming was polluted by artificial addition of Pb and Cd,which was divided into Pb addition group and Cd addition group to study the relationship between soil magnetic parameters and heavy metal concentrations.The single-factor pollution index and Nemeiro comprehensive pollution index were used for pollution evaluation.The results showed that the experimental plots were heavily polluted by Pb and Cd,and Cu,Zn,As,Cr and Hg were slightly to moderately polluted.Using Pearson correlation and principal component analysis methods to explore the relationship between soil magnetic parameters(low frequency mass magnetic susceptibilityχlf,frequency mass magnetic susceptibilityχfd%,non-hysteresis remanence ARM,saturation isothermal remanence SIRM)and heavy metal content under artificial Pb and Cd pollution conditions relationship.χlf in each control group showed a significant positive correlation with Cu and Zn.In the Pb addition group,SIRM was significantly negatively correlated with Pb concentration,and in the Cd addition group,χfd%was significantly positively correlated with Cd concentration.
作者
任二慧
李海侠
张小凌
李刚强
李峰锐
刘大祥
陈宇东
张子豪
REN Erhui;LI Haixia;ZHANG Xiaoling;LI Gangqiang;LI Fengrui;LIU Daxiang;CHEN Yudong;ZHANG Zihao(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China)
出处
《有色金属工程》
CAS
北大核心
2021年第12期122-128,共7页
Nonferrous Metals Engineering
基金
国家自然科学基金资助项目(42064005)。
关键词
人为Cd、Pb污染
土壤磁性参数
重金属污染
man-made Cd and Pb pollution
soil magnetic parameters
heavy metal pollution
