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Spatial and temporal trends of PCDD/Fs in sediment and bivalves along the Korean coasts during 2001-2012

Title
Spatial and temporal trends of PCDD/Fs in sediment and bivalves along the Korean coasts during 2001-2012
Author
문효방
Keywords
PCDD; PCDF; Mussel; Decreasing trend; Regulation; Sediment quality
Issue Date
2019-09
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
MARINE POLLUTION BULLETIN, v. 146, Page. 183-189
Abstract
Concentrations of polychlorinated dibenzo-para-dioxins and dibenzofurans (PCDD/Fs) were measured in sediment and bivalves at 25 locations along the Korean coasts during 2001-2012. Concentrations of PCDD/Fs in sediment and bivalves ranged from 0.15 to 18.9 pg TEQ/g dry weight and from 0.06 to 7.70 pg TEQ/g wet weight, respectively. Elevated PCDD/F concentrations were found at locations close to largest industrial complexes and commercial harbors. A significant decreasing trend of PCDD/Fs in sediment was associated with strong regulation of PCDD/Fs, whereas levels in bivalves did not show a decreasing trend. Octachlorinated dibenzo-p-dioxin (OCDD) was predominant in sediment, while tetrachlorinated dibenzofuran and OCDD were predominant in bivalves. Almost half (46%) of sediment samples exceeded the threshold effect level suggested by the US National Oceanic and Atmospheric Administration, implying ecotoxicological risks to benthic organisms. Our findings support the effectiveness of legislative action on PCDD/Fs for coastal environments of Korea.
URI
https://www.sciencedirect.com/science/article/pii/S0025326X19304473http://repository.hanyang.ac.kr/handle/20.500.11754/120849
ISSN
0025-326X; 1879-3363
DOI
10.1016/j.marpolbul.2019.06.002
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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