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Composition, Source, and Regional Concentration of PBDEs in Pine Needles  

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)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.8, 2006 , pp. 829-835 More about this Journal
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.
Keywords
PBDEs; Pine Needles; Deca-BDE; Technical Mixture; Secondary Sources;
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