Distribution characteristics, sources, and risk assessment of organochlorine pesticides in the Fildes Peninsula and Adelaide Island

Yunchao Zheng; Bin Han; Xiuli Xu; Li Zheng

doi:10.1016/j.marpolbul.2022.114284

Distribution characteristics, sources, and risk assessment of organochlorine pesticides in the Fildes Peninsula and Adelaide Island

Mar Pollut Bull. 2022 Dec;185(Pt A):114284. doi: 10.1016/j.marpolbul.2022.114284. Epub 2022 Oct 31.

Authors

Yunchao Zheng¹, Bin Han², Xiuli Xu³, Li Zheng⁴

Affiliations

¹ Marine Bioresource and Environment Research Center, Key Laboratory of Marine Eco-Environmental Science and Technology, The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; School of Ocean Sciences, China University of Geosciences, Beijing 100083, China.
² Marine Bioresource and Environment Research Center, Key Laboratory of Marine Eco-Environmental Science and Technology, The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China. Electronic address: hanbin@fio.org.cn.
³ School of Ocean Sciences, China University of Geosciences, Beijing 100083, China. Electronic address: xuxl@cugb.edu.cn.
⁴ Marine Bioresource and Environment Research Center, Key Laboratory of Marine Eco-Environmental Science and Technology, The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.

PMID: 36327938
DOI: 10.1016/j.marpolbul.2022.114284

Abstract

This work analyzed the distribution characteristics, sources, and corresponding environmental risks of 10 organochlorine pollutants (OCPs) in soil samples from 13 stations on the Fildes Peninsula and Adelaide Island in Antarctica in 2020. Results showed that the total amount of OCP residues in the study area ranged from N.D. to 2.66 ng·g^-1 with an average concentration of 0.90 ng·g^-1. Six organochlorine pesticides were detected, and the residue level of DDTs was slightly lower than that of HCHs. The residues of HCHs were mainly γ-HCH and those of DDTs were mainly O, P'-DDT. Source analysis revealed that the residues mainly originated from atmospheric transport and human activities. Environmental risk analysis showed that in the study area, the residues of HCHs and DDTs were present at low levels, and their ecological risk was low.

Keywords: Adelaide Island; Distribution characteristics; Fildes Peninsula; Organochlorine pesticides; Risk assessment; Source.

MeSH terms

China
DDT / analysis
Environmental Monitoring / methods
Humans
Hydrocarbons, Chlorinated* / analysis
Pesticides* / analysis
Risk Assessment
Water Pollutants, Chemical* / analysis

Substances

Water Pollutants, Chemical
Hydrocarbons, Chlorinated
Pesticides
DDT