Organochlorine pesticides in the sediment core of Gwangyang bay, South Korea | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1280595

Reference Type

Journal Article

Title

Organochlorine pesticides in the sediment core of Gwangyang bay, South Korea

Author(s)

Kim, YS; Eun, H; Cho, HS; Kim, KS; Sakamoto, T; Watanabe, E; Baba, K; Katase, T

Year

2008

Is Peer Reviewed?

Yes

Journal

Archives of Environmental Contamination and Toxicology
ISSN: 0090-4341
EISSN: 1432-0703

Volume

Issue

Page Numbers

386-394

Language

English

PMID

17885778

DOI

10.1007/s00244-007-9047-8

Web of Science Id

WOS:000253756200004

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-40549089503&doi=10.1007%2fs00244-007-9047-8&partnerID=40&md5=48bf46f8675835c577e4b3c3baa6b625
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Abstract

The nine organochlorine pesticides (OCPs) in the sediment samples taken from Gwangyang Bay, which is a heavy chemical industrial region in South Korea, are analyzed to evaluate their contaminations during the past 50 years. The vertical distributions of SigmaOCPs concentration in the sediment core were in good agreement with the temporal amount of pesticides used in South Korea except for the top sediment layer. The DDTs were predominant, their concentrations ranging from 78.0 to 202 pg/g dry wt and attributed more than 60% to SigmaOCPs in all the sediment layers. Based on the ratio of DDT metabolite compositions, the DDT contamination in the top layer might be caused from recent input. This is due to the highest residual concentration of OCPs in the top layer. Although HCB and mirex have been unregistered as pesticides in South Korea, two compounds were detectable in all of the sediment samples in the range from 0.243 to 16.7 pg/g dry wt in the study area. The emission source of HCB in the sediment core could be estimated to be due to incomplete combustion in the industrial chemical processes rather than pesticide application. Regarding horizontal distribution of SigmaOCPs, the concentration was slightly higher than for the inner bay than the outer bay. The OCPs in the sediments of Gwangyang Bay were compared with those of other countries by hierarchical cluster analysis and principal component analysis.

Keywords

persistent organic pollutants; organochlorine pesticides; sediment core; characterization; Gwangyang Bay