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Accumulation Levels and Distribution Characteristics of Polychlorinated Biphenyls in Crucians and Leopard Frogs from the Nakdong River Basin
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2004, v.17 no.4, pp.347-354
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(2004). Accumulation Levels and Distribution Characteristics of Polychlorinated Biphenyls in Crucians and Leopard Frogs from the Nakdong River Basin. Analytical Science and Technology, 17(4), 347-354.
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Abstract
We collected crucians (Carassius auratus) and leopard frogs(Rana pipiens) along the Nakdong River and the basin area at five locations from Koomi to Nakdong-estuary. The muscular tissue were separated and a GC-MSD system was used for quantification of PCBs. The 62 PCB congeners which represent total PCB levels were selected as analytes. We determined concentrations of PCBs and studied distribution characteristics by individual congeners and homologs. In the crucian, 24 congeners were detected and total PCB levels ranged from 0.74 to 5.41 ng/g wet weight. In the leopard frog, however, only 2 congeners were detected from Nakdong estuary only. The PCB level was 0.24 ng/g wet weight, around 22 times lower than the crucians. The PCB 153 showed the highest concentrations in the congeners and penta- and hexa-CBs showed the strong predominance which accounted for 78% of the total PCBs.
- keywords
- pcb, polychlorinated biphenyls, fish, crucian, frog
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