Ecological risk and early warning of soil compound pollutants (HMs, PAHs, PCBs and OCPs) in an industrial city, Changchun, China

Jingyao Peng; Yanan Chen; Qing Xia; Guangzhi Rong; Jiquan Zhang

doi:10.1016/j.envpol.2020.116038

Ecological risk and early warning of soil compound pollutants (HMs, PAHs, PCBs and OCPs) in an industrial city, Changchun, China

Environ Pollut. 2021 Mar 1:272:116038. doi: 10.1016/j.envpol.2020.116038. Epub 2020 Nov 27.

Authors

Jingyao Peng¹, Yanan Chen², Qing Xia¹, Guangzhi Rong¹, Jiquan Zhang³

Affiliations

¹ School of Environment, Northeast Normal University, Changchun, 130024, China; Key Laboratory for Vegetation Ecology, Ministry of Education, Changchun, 130024, China.
² College of Water Conservancy and Environmental Engineering, Changchun Institute of Technology, Changchun, 130012, China.
³ School of Environment, Northeast Normal University, Changchun, 130024, China; Key Laboratory for Vegetation Ecology, Ministry of Education, Changchun, 130024, China. Electronic address: zhangjq022@nenu.edu.cn.

PMID: 33280915
DOI: 10.1016/j.envpol.2020.116038

Abstract

Soil ecological risk caused by compound pollutants is a topic that deserves increasing attention, and soil risk early warning is a more in-depth discussion on this topic. In this study, we collected soil samples from Changchun, a typical industrial city, and determined the contents of 13 heavy metals (HMs) (0.00 mg kg^-1-6380 mg kg^-1), 16 polycyclic aromatic hydrocarbons (PAHs) (0.00 mg kg^-1-27.7 mg kg^-1), 7 polychlorinated biphenyls (PCBs) (0.30 μg kg^-1-168 μg kg^-1), and 8 organochlorine pesticides (OCPs) (0.00 mg kg^-1-4.52 mg kg^-1). The soil ecological risks of compound pollutants were assessed. The results showed that PAHs were the greatest risk pollutants, followed by PCBs and HMs, and OCPs were the smallest risk pollutants. Most of the ecological risks of compound pollutants were classified as "moderate severity" level according to the (contamination severity index) CSI evaluation criteria. With the help of modern industrial economic theory, through the analysis of the annual accumulation of pollutants, it is possible to predict the future pollutant content in Changchun, and the soil risks could be forewarned. The results showed that if active measures were not taken to reduce the accumulation of PAHs in Changchun soil, the CSI-PAHs would be classified as "ultra-high severity" level in 2035.

Keywords: Compound pollutants; Early warning; Ecological risks; Industrial city.

MeSH terms

China
Cities
Environmental Monitoring
Environmental Pollutants* / analysis
Hydrocarbons, Chlorinated* / analysis
Metals, Heavy* / analysis
Pesticides* / analysis
Polychlorinated Biphenyls* / analysis
Polycyclic Aromatic Hydrocarbons* / analysis
Soil
Soil Pollutants* / analysis

Substances

Environmental Pollutants
Hydrocarbons, Chlorinated
Metals, Heavy
Pesticides
Polycyclic Aromatic Hydrocarbons
Soil
Soil Pollutants
Polychlorinated Biphenyls