Accumulation and temporal changes of PCDD/Fs and dioxin-like PCBs in finless porpoises (Neophocaena asiaeorientalis) from Korean coastal waters: Tracking the effectiveness of regulation
- Authors
- Jeong, Yunsun; Kim, Sang-Jo; Shin, Kyung-Hoon; Hwang, Seung Yong; An, Yong-Rock; Moon, Hyo-Bang
- Issue Date
- Apr-2016
- Publisher
- Pergamon Press Ltd.
- Keywords
- PCDD/Fs; TEQs; Stockholm Convention; Marine mammal; Temporal trend
- Citation
- Marine Pollution Bulletin, v.105, no.1, pp.30 - 36
- Indexed
- SCIE
SCOPUS
- Journal Title
- Marine Pollution Bulletin
- Volume
- 105
- Number
- 1
- Start Page
- 30
- End Page
- 36
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/14060
- DOI
- 10.1016/j.marpolbul.2016.03.007
- ISSN
- 0025-326X
- Abstract
- Temporal trend studies are useful to evaluate the effectiveness of regulations on local pollutants. The emission of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (PCBs) has been regulated by the Korean government in accordance with the Stockholm Convention. The accumulation and temporal trends of PCDD/Fs and dioxin-like PCBs were investigated in finless porpoises (Neophocaena asiaeorientalis) collected in Korean waters. Median concentrations of PCDDs, PCDFs, non-ortho PCBs, and mono-ortho PCBs were 1.0, 1.1, 0.1, and 1.8 pg TEQ/g lipid weight, respectively, which-were lower than threshold values for marine mammals. Age- and sex-dependent accumulation patterns were found for PCDFs and DL-PCBs. Temporal trends in finless porpoises collected between 2003 and 2010 showed significant reduction rates of 57%, 54%, 69%, and 60% for PCDDs, PCDF5, non-ortho PCBs, and mono-ortho PCBs, respectively. Our results suggest that the regulations on dioxin-like contaminants have been effective for marine mammals in Korea. (C) 2016 Elsevier Ltd. All rights reserved.
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