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DOI: https://doi.org/10.4491/eer.2018.003
Trophic transfer of organochlorine pesticides through food-chain in coastal marine ecosystem
Seung-Kyu Kim1,2
1Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, Republic of Korea
2Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
Corresponding Author: Seung-Kyu Kim ,Tel: +82-32-835-8862, Email: skkim@incheon.ac.kr
Received: January 1, 2019;  Accepted: January 29, 2019.
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ABSTRACT
The present study was designed to characterize the bioaccumulation of organochlorine pesticides (OCPs) in marine organisms (zooplankton, oyster, crab, and goby) on different trophic level. In the present study, sedentary bivalve (oyster) showed strong correlations in OCPs levels with surface sediment in the study area. This indicates the two compartments can be used as alternative for pollution monitoring of OCPs even in narrow scale in space. Bioaccumulation and trophic transfer of OCPs was strongly associated with their hydrophobicity (i.e., KOW). HCHs with log KOW < 5 did not show any enrichment through food-chain. However, log BAF values of OCPs with log KOW > 5 positioned over the 1:1 lines of log BAF and log KOW of the top predator, indicating the greater fugacities in the higher trophic level and thus the occurrence of biomagnification via ingestion. Based on trophic transfer factors (TTF), more hydrophobic OCPs with log KOW > 5 were enriched by several to several ten times in the highest trophic level relative to the lowest trophic level. This finding can be used in the establishment of marine environmental water quality criteria by considering biomagnification factors (TTF in this study) of OCPs.
Keywords: Bioaccumulation | Food-chain | Incheon North Harbor | KOW | Organochlorine pesticides | Trophic level
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