Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Distribution and Source Identification of PCDD/Fs and Co-PCBs in Sediments from the Geum River

금강 수계 퇴적물 중 PCDD/Fs 및 Co-PCBs의 농도 분포와 발생원 해석

  • Park, Jong-Eun (Dept. of Environmental Engineering, Chonbuk National University) ;
  • Kim, Jong-Guk (Dept. of Environmental Engineering, Chonbuk National University) ;
  • Ahn, Sung-Yun (Dept. of Environmental Engineering, Chonbuk National University)
  • Received : 2011.12.09
  • Accepted : 2011.12.30
  • Published : 2011.12.30
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Abstract

To investigate concentration and sources of PCDD/Fs and Co-PCBs in sediments, total 52 sediment samples were measured at 17 sites in Geum River. As a result of analysis, total concentrations of PCDD/Fs and Co-PCBs were ranged from not detected (N.D.)~193.47 pg/g-d.w. (mean value: 84.52 pg/g-d.w) and 0.34~359.19 pg/g-d.w (mean value: 114.65 pg/g-d.w.) respectively. Also, toxic equivalent (TEQ) concentration of PCDD/Fs and Co-PCBs were ranged from N.D.~5.12 (mean value: 0.88) pg I-TEQ/g-d.w and N.D.~0.58 (mean value: 0.09) $WHO_{2005}$-TEQ pg/g-d.w. respectively. The upstream indicate the highest concentration and as it goes to the downstream, it has tendency to decrease. Higher chlorinated compounds were dominant in most of site which detected PCDD/Fs. Occurrence of Co-PCBs isomer patterns appear similar to each sampling site was found. The isomer patterns showed similar between sediment and PCB products. The principal component analysis also showed that the samples contained the characteristics of PCBs products.

본 연구에서는 금강 수계 퇴적물 중 PCDD/Fs 및 Co-PCBs의 농도 분포를 파악하고 발생원을 추정하기 위해 17개 지점에서 총 52개의 샘플을 채취하여 분석하였다. 금강 수계 퇴적물 표층에서 검출된 PCDD/Fs 및 Co-PCBs의 농도 수준은 각각 불검출~193.47(평균 84.52) pg/g-d.w.와 0.34~359.19(평균 114.65) pg/g-d.w.를 나타내었으며, TEQ 값은 각각 불검출~5.12(평균 0.88)pg I-TEQ/g-d.w와 불검출~0.58(평균 0.09) $WHO_{2005}$-TEQ pg/g-d.w.을 나타내었다. 유역별로는 하수종말처리장, 분뇨처리장, 매립장 등이 위치한 상류 지역에서 가장 높은 농도를 보였으며, 하천 하류 방향으로 갈수록 감소하는 경향을 보였다. 다이옥신이 검출된 지점에서는 고염소 화합물이 특징적으로 높은 패턴을 나타내었으며, Co-PCBs는 모든 퇴적물 시료의 이성체 패턴이 PCBs 제품의 패턴과 유사한 경향을 보였다. Co-PCBs의 발생원 해석을 위해 통계 분석을 수행한 결과 상업적 PCBs 제품에 의한 영향이 큰 것으로 나타났다.

Keywords

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