Pollution characteristics and source apportionment of heavy metal(loid)s in soil and groundwater of a retired industrial park  

作　　者：Zijing Xiang Shijin Wu Lizhong Zhu Kun Yang Daohui Lin 

机构地区：[1]Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control,Department of Environmental Sciences,Zhejiang University,Hangzhou 310058,China [2]Zhejiang Ecological Civilization Academy,Anji 313300,China

出　　处：《Journal of Environmental Sciences》2024年第9期23-34,共12页环境科学学报（英文版）

基　　金：supported by the Science and Technology Research Program of Zhejiang Province(No.2020C03011);the National Key Research and Development Program of China(No.2022YFC3702100);Zhejiang Provincial Natural Science Foundation of China(No.LD21B070001)。

摘　　要：Heavy metal(loid)s(HMs)pollution has become a common and complex problem in industrial parks due to rapid industrialization and urbanization.Here,soil and groundwater were sampled from a retired industrial park to investigate the pollution characteristics of HMs.Results show that Ni,Pb,Cr,Zn,Cd,and Cu were the typical HMs in the soil.Source analysis with the positive matrix factorization model indicates that HMs in the topsoil stemmed from industrial activities,traffic emission,and natural source,and the groundwater HMs originated from industrial activities,groundwater-soil interaction,groundwater-rock interaction,and atmosphere deposition.The sequential extraction of soil HMs reveals that As and Hg were mainly distributed in the residue fraction,while Ni,Pb,Cr,Zn,Cd,and Cu mainly existed in the mobile fraction.Most HMs either in the total concentration or in the bioavailable fraction preferred to retain in soil as indicated by their high soil-water partitioning coefficients(K_(d)),and the K_(d) values were correlated with soil pH,groundwater redox potential,and dissolved oxygen.The relative stable soil-groundwater circumstance and the low active fraction contents limited the vertical migration of soil HMs and their release to groundwater.These findings increase our knowledge about HMs pollution characteristics of traditional industrial parks and provide a protocol for HMs pollution scrutinizing in large zones.

关 键 词：Heavy metal(loid)s Industrial park Source apportionment Chemical fraction Soil-groundwater partitioning 

分 类 号：X53[环境科学与工程—环境工程] X523