부산신항만 공사 진행에 따른 수달 배설물 내 폴리클로로비페닐(PCBs)의 농도 분포
Concentration Distribution of Polychlorinated Biphenyls in Otter Scats from Active Construction Sites of the Busan New Port
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초록
This study was conducted to investigate the contamination status and distribution of the isomers of polychlorinated biphenyls (PCBs) in otter (Lutra lutra) scats collected from 17 localities in 3 regions (I-III) near the Busan New Port from 2003 to 2014. Detectable levels of ΣPCBs were found in all the samples. The mean concentration of ΣPCBs ranged from 3.40 to 50.4 ng/g in three of the study regions. The levels of ΣPCBs in the three regions were compared. A relatively high level of ΣPCBs was detected in region I, where the construction works were the most active. However, this had no statistical significance. Congener profiles showed that PCB-153 (mean contribution=28%) was predominant, followed by PCB-138 (24%), PCB-118 (17%), PCB-180 (11%), and PCB-52 (5%). High levels of PCB-153 and PCB-138, which are usually found at high levels in fish, in the otter scats suggest that the PCBs might have originated from fish, which are the primary source of food for otters. The results obtained suggest that otters ingest PCBs when they consume contaminated fish in coastal areas with active construction works.
Abstract
This study was conducted to investigate the contamination status and distribution of the isomers of polychlorinated biphenyls (PCBs) in otter (Lutra lutra) scats collected from 17 localities in 3 regions (I-III) near the Busan New Port from 2003 to 2014. Detectable levels of ΣPCBs were found in all the samples. The mean concentration of ΣPCBs ranged from 3.40 to 50.4 ng/g in three of the study regions. The levels of ΣPCBs in the three regions were compared. A relatively high level of ΣPCBs was detected in region I, where the construction works were the most active. However, this had no statistical significance. Congener profiles showed that PCB-153 (mean contribution=28%) was predominant, followed by PCB-138 (24%), PCB-118 (17%), PCB-180 (11%), and PCB-52 (5%). High levels of PCB-153 and PCB-138, which are usually found at high levels in fish, in the otter scats suggest that the PCBs might have originated from fish, which are the primary source of food for otters. The results obtained suggest that otters ingest PCBs when they consume contaminated fish in coastal areas with active construction works.
참고문헌 (20)
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