Simulation of Historical Trend of Hexachlorobenzene in Sediment Cores using the Emission Estimate and Dynamic Multimedia Environmental Fate Model.

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.

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Organochlorine Pesticides in the Sediment Core of Gwangyang Bay, South Korea

Kim

Eun

Cho

et al. 2007

Arch Environ Contam Toxicol

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Vertical distributions of persistent organic pollutants (POPs) caused from organochlorine pesticides in a sediment core taken from Ariake bay, Japan

et al. 2007

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Survey on organochlorine pesticides, PCDD/Fs, dioxin-like PCBs and HCB in sediments from the Han river, Korea

et al. 2009

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Simulation of Historical Trend of Hexachlorobenzene in Sediment Cores using the Emission Estimate and Dynamic Multimedia Environmental Fate Model.

Cited by 5 publications

References 3 publications

Organochlorine Pesticides in the Sediment Core of Gwangyang Bay, South Korea

Organochlorine Pesticides in the Sediment Core of Gwangyang Bay, South Korea

Vertical distributions of persistent organic pollutants (POPs) caused from organochlorine pesticides in a sediment core taken from Ariake bay, Japan

Survey on organochlorine pesticides, PCDD/Fs, dioxin-like PCBs and HCB in sediments from the Han river, Korea

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