Ambient air monitoring of PCDD/Fs and co-PCBs in Gyeonggi-do, Korea |
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Authors: | Kim Dong Gi Min Yoon Ki Jeong Ju Yong Kim Gu Hwan Kim Joo Yeol Son Chin Suk Lee Dong Hoon |
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Institution: | Department of Environmental Research, Gyeonggi Institute of Health and Environment, 324-1 Pajang-dong, Jangan-gu, Suwon, Gyeonggi-do 440-290, Republic of Korea. |
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Abstract: | 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). |
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