Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Composition, Source, and Regional Concentration of PBDEs in Pine Needles

소나무 잎 중 PBDEs의 조성, 발생원 및 지역적 농도

  • Yeo, Hyun-Gu (Technical Support Department, Gangwon Regional Small and Medium Business Administration) ;
  • Cho, Ki-Chul (Department of Environmental Science, Dongnam Health College) ;
  • Chun, Man-Young (Environmental Research Center, Environmental Engineering, National Hankyong University)
  • 여현구 (강원지방 중소기업청 기술지원과) ;
  • 조기철 (동남보건대학 환경생명과학과) ;
  • 천만영 (한경대학교 환경공학과)
  • Published : 2006.08.31
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Abstract

The composition, source, and regional concentration of polybrominated diphenyl ethers(PBDEs) were measured in pine needles with several sites in Korea. Homologs specific analysis confirmed that hepta-BDE(bromodiphenyl ethers) through deca-BDE were predictive indicator for total PBDEs concentration(Pearson's correlation coefficient r>0.96, p<0.001). Deca-BDE were detected in relatively very high concentration compared to other PBDE congeners in all samples. The similarity of between congeners profile to those of Bromkal 70-5DE and DE-71, the commercial mixture of PBDEs, indicates these mixtures are source of PBDEs observed in these sites. Also, BDE-47, -99, -100, -206, -207, and -209 were the dominant congeners in all samples, suggesting that the widely used commercial penta- and deca-BDE technical mixture were the original sources. However, Pearson's correlation coefficients of between BDE-209 and BDE-47, -99, -100 were insignificant, which implied that tetra-BDE and penta-BDE may originate from secondary sources such as air-plant partition in manner similar to that of the PCBs, while deca-BDE formulation still has primary sources.

PBDEs의 조성, 발생원 및 지역적 농도 분포를 확인하기 위해 국내의 여러지역(서울, 안성, 청주, 울산, 대구, 부산, 파도리)에서 자생하는 소나무 잎을 채취하였다. Hepta-BDE부터 deca-BDE까지의 동족체(homologs) 농도는 총 PBDEs의 농도와 매우 유의한 상관성(Pearson 상관계수 r>0.96, p<0.001)을 보였다. Deca-BDE는 다른 homologs에 비해 모든 시료에서 최대농도를 나타내었다. PBDE 함유 제품(Bromkal 70-5DE, DE-71)과 소나무 중 침착된 PBDE 동질체(congeners) 사이의 상관성이 높게 나타나 PBDE 함유 제품이 본 채취지점에서 발생원으로 평가되었다. 또한 BDE-47, -99, -100, -206, -207 및 -209는 모든 소나무 잎에서 주된 성분을 나타내었는데 이는 전세계적으로 다량 사용된 penta-BDE와 deca-BDE 함유 제품이 국내에도 다량으로 사용되었기 때문으로 판단된다. 그러나 BDE-209와 BDE-47, -99, -100간의 상관성은 유의하지 않았는데 이는 tetra-BDE와 penta-BDE는 대기-토양 분배와 같은 2차 발생원에 영향이 지배적인 반면 deca-BDE는 여전히 1차 발생원의 영향이 2차 발생원의 영향보다 지배적이었기 때문으로 판단된다.

Keywords

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