Distribution characteristics, source analysis and risk assessment of organochlorine pesticides in Ny-Ålesund, Arctic

The distribution characteristics, sources, and risk levels of organochlorine pesticides (OCPs) in Ny-Ålesund of the Arctic region during China's 10th Arctic expedition were studied in this paper. Results showed that the concentration of OCPs in the surface soil of the Ny-Ålesund region ranged f...

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Bibliographic Details
Published in:Marine pollution bulletin 2022-08, Vol.181, p.113862-113862, Article 113862
Main Authors: Zheng, Yunchao, Han, Bin, Xu, Xiuli, Liu, Ang, Zheng, Li
Format: Article
Language:English
Subjects:
Distribution characteristics
Ny-Ålesund
Organochlorine pesticides
Risk assessment
Source
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Summary:The distribution characteristics, sources, and risk levels of organochlorine pesticides (OCPs) in Ny-Ålesund of the Arctic region during China's 10th Arctic expedition were studied in this paper. Results showed that the concentration of OCPs in the surface soil of the Ny-Ålesund region ranged from 0.59 ng·g−1 to 3.87 ng·g−1, with an average concentration of 2.22 ng·g−1. Source analysis showed that the OCPs in the study area mainly originated from historical residues, and a certain degree of conversion between congeners of hexachlorocyclohexanes and dichlorodiphenyltrichloroethanes in the soil occurred due to environmental factors. Ecological risk assessment indicated that the study area was at a low ecological risk level, but the potential environmental impact of OCPs could not be neglected due to the specificity and sensitivity of the Arctic environment. •Six OCPs were detected in the topsoil of Ny-Ålesund, in the Arctic.•The OCPs mainly originated from historical residues.•OCPs in this region were at low ecological risk.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2022.113862