Severe pollution of PCDD/Fs and dioxin-like PCBs in sediments from Lake Shihwa, Korea: Tracking the source

被引：44
作者：
Moon, Hyo-Bang [1 ]
Choi, Minkyu [2 ]
Choi, Hee-Gu [2 ]
Kannan, Kurunthachalam [3 ,4 ]
机构：
[1] Hanyang Univ, Coll Sci & Technol, Dept Environm Marine Sci, Ansan 426791, South Korea
[2] Natl Fisheries Res & Dev Inst, Marine Environm Res Div, Pusan 619705, South Korea
[3] Wadsworth Ctr, New York State Dept Hlth, New York, NY USA
[4] SUNY Albany, Sch Publ Hlth, Dept Environm Hlth Sci, Albany, NY 12201 USA
来源：
MARINE POLLUTION BULLETIN | 2012年 / 64卷 / 11期
基金：
新加坡国家研究基金会;
关键词：
PCDDs; PCDFs; PCBs; Chlor-alkali; Total organic carbon; Coastal sediment; DIBENZO-P-DIOXINS; POLYCYCLIC AROMATIC-HYDROCARBONS; POLYCHLORINATED DIBENZOFURANS; BIPHENYLS; CONTAMINATION; CHINA; WATER; RIVER; BAY; ALKYLPHENOLS;
D O I：
10.1016/j.marpolbul.2012.08.018
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Concentrations of polychlorinated dibenzo-p-dioxins, dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) were determined in surface sediments from Lake Shihwa and from creeks that discharge into this artificial lake. The toxic equivalents (TEQs) in sediments ranged from 1.0 to 1770 pg/g dry weight, which were some of the highest values ever reported so far for coastal sediments on a global basis. The concentrations of PCDD/Fs and DL-PCBs decreased with increasing distance from the creeks to offshore regions of the lake. Based on a multivariate statistical analysis and congener profiles, it was found that high contamination by PCDD/Fs in creek sediments collected around Lake Shihwa was associated with releases from chlor-alkali processes. Significant correlations were found for total organic carbon content and the concentrations of highly chlorinated PCDD/F congeners. This is the first report to document chlor-alkali processes as a significant source of PCDD/F contamination in Korean coastal waters. (C) 2012 Elsevier Ltd. All rights reserved.
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收藏
页码：2357 / 2363
页数：7
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