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

Zheng, Yunchao; Han, Bin; Xu, Xiuli; Liu, Ang; Zheng, Li

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

2022

Zheng, Yunchao | Han, Bin | Xu, Xiuli | Liu, Ang | Zheng, Li

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.

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