Analysis of 2,3,7,8-substituted PCDDs, PCDFs, and DL-PCBs in muscle of crucian carp (Carassius auratus and Carassius cuvieri) from major rivers and lakes

Bioaccumulation status and distribution characteristics of PCDDs, PCDFs and DL-PCBs in cruian carp collected from the four representative sites of major river systems in Korea were investigated. The recovery rates of PCDDs and PCDFs ranged from 50.6% to 88.3%, and those of DL-PCBs ranged from 52.3% to 93.2%. The mean, median and concentration range of ${\sum}$dioxins, which represents the total concentratons of PCDDs, PCDFs and DL-PCBs accumulated in the muscle of crucian carp, were 0.39, 0.14 and 0.047-1.0 pg TEQ/g wet wt., respectively. DL-PCBs were detected above the detection limit from all the samples, whereas PCDDs and PCDFs were detected from limited crucian samples. The relative contribution of DL-PCBs to ${\sum}$dioxins was remarkably larger than those for PCDDs and PCDFs. The percent contribution was 83.6% for DL-PCBs, and followed by 12.7% and 3.7% for PCDFs and PCDDs, respectively.

주요 하천 및 호수에 서식하는 붕어 (Carassius auratus and Carassius cuvieri) 근육에 축적된 2,3,7,8-치환 PCDDs, PCDFs 및 DL-PCBs 분석

우리나라 주요 하천수계의 대표적인 지점 한 곳씩 선정하여 이곳에 서식하는 붕어에 대한 PCDDs, PCDFs 및 DL-PCBs의 체내 축적 정도를 분석하고 분포특성을 살펴보았다. 회수율은 PCDDs 및 PCDFs는 50.6%~88.3%, DL-PCBs는 52.3%~93.2%이었으며, 붕어 체내에 축적된 PCDDs, PCDFs 및 DL-PCBs를 모두 합한 ${\sum}$dioxins은 평균 0.39 pg TEQ $g^{-1}$ wet wt., 중앙값 0.14 pg TEQ/g wet wt., 그리고 농도 범위는 0.047-1.0 pg TEQ/g wet wt.으로 나타났다. PCDDs 및 PCDFs는 일부 시료에서 검출된 반면, DL-PCBs는모든 시료에서 검출되었으며 ${\sum}$dioxins에 대한 기여도가 83.6%로서 가장 높았다. 다음으로 PCDFs와 PCDDs가 각각 ${\sum}$dioxins의 12.7%와 3.7%를 기여하고 있었다.