Occurrences, Possible Sources, and Risk Impacts of Organochlorine Pesticides in Soil of Changchun Central Urban Area, Northeast China

Wei Zhao, Jilong Lu (), Yawen Lai, Yaru Hou, Xinyun Zhao, Qiaoqiao Wei, Xiaoxiao Zou and Zhiyi Gou
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Wei Zhao: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Jilong Lu: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Yawen Lai: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Yaru Hou: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Xinyun Zhao: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Qiaoqiao Wei: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Xiaoxiao Zou: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
Zhiyi Gou: College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China

Sustainability, 2023, vol. 15, issue 24, 1-17

Abstract: Eighteen organochlorine pesticides (OCPs) in soil samples from the Changchun central urban area, Northeast China were analyzed using accelerated solvent extraction combined with gas chromatography/mass spectrometry (ASE-GC/MS) for the purpose of elucidating their contamination status, distribution characteristics, influencing factors, and feasible dangers in this city region. The complete concentrations of OCPs ranged from 15.63 to 92.79 ng/g, with a geomean of 36.46 ng/g. Hexachlorocyclohexane(HCHs), dichlorodiphenyltrichoroethane (DDTs), and chlordanes were the most dominant OCPs, with γ-HCH and p,p′-DDT being the predominant isomers. Higher concentrations of OCPs often centered to the northeast and southwest of the Changchun metropolis, and these artificial influences contributed to the destiny of OCPs in the soils. The residues of OCPs were derived from the historic utility of the technological DDT, dicofol, and lindane. A Pearson’s correlation evaluation indicated that TOC was once a key factor controlling OCP accumulation. The ecological risk evaluation based on the soil quality guidelines (SQGs) advises that the presence of DDTs, lindane, and heptachlor may additionally pose a poisonous ecological danger to soil organisms. The contrast outcomes of the incremental lifetime cancer risk (ILCR) confirmed that the highest cancer risk of OCPs to the posed populace was once low, whilst some unique areas with excessive OCP residues ought to be given attention. The research results provide basic information for evaluating the extent of OCP pollution in the soil of major cities in Northeast China and can help authorities establish environmental protection regulations and soil remediation techniques.

Keywords: organochlorine pesticides (OCPs); urban soil; Changchun; health risk assessment (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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