Kim Dong Gi, Min Yoon Ki, Jeong Ju Yong, Kim Gu Hwan, Kim Joo Yeol, Son Chin Suk, Lee Dong Hoon
Department of Environmental Research, Gyeonggi Institute of Health and Environment, 324-1 Pajang-dong, Jangan-gu, Suwon, Gyeonggi-do 440-290, Republic of Korea.
Chemosphere. 2007 Apr;67(9):1722-7. doi: 10.1016/j.chemosphere.2006.05.123. Epub 2007 Jan 10.
We started the monitoring for PCDD/Fs in ambient air and soil in August 2001, and co-PCBs in January 2002. Decreasing of PCDD/Fs and co-PCBs levels in ambient air were observed. The higher PCDD/Fs levels were found in winter and lower in autumn. We found that the industrial incinerators influenced the PCDD/Fs levels in ambient air. In the 2,3,7,8-substituted PCDD/Fs concentration profiles, the three major congeners occupied 67% of the total mass. In case of co-PCBs, PCB#118, #105 and #77 were observed as the main congeners. Five cluster groups discriminated by ratio of four components, O(8)CDD, 1,2,3,4,6,7,8-H(7)CDD, 1,2,3,4,6,7,8-H(7)CDF and O(8)CDF, were obtained from HCA (hierarchical cluster analysis).
我们于2001年8月开始对环境空气中的多氯二苯并对二噁英/多氯二苯并呋喃（PCDD/Fs）以及土壤进行监测，并于2002年1月开始对共平面多氯联苯（co-PCBs）进行监测。观察到环境空气中PCDD/Fs和co-PCBs水平呈下降趋势。冬季环境空气中PCDD/Fs水平较高，秋季较低。我们发现工业焚烧炉对环境空气中PCDD/Fs水平有影响。在2,3,7,8-取代PCDD/Fs的浓度分布中，三种主要同系物占总质量的67%。对于co-PCBs，观察到PCB#118、#105和#77为主要同系物。通过层次聚类分析（HCA），根据四组分O(8)CDD、1,2,3,4,6,7,8-H(7)CDD、1,2,3,4,6,7,8-H(7)CDF和O(8)CDF的比例区分出五个聚类组。
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