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KMID : 1024520100190040447
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Journal of the Environmental Sciences
2010 Volume.19 No. 4 p.447 ~ p.457
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Annual Variation and Gas/Particle Partitioning of PCDD/DFs of Ambient Air at Busan, Korea
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Ok Gon
Park No-Jin
Hwan Sung-Min
Lee Seok-Hyung
Kim Jee-Hoon
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Abstract
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This study aims to monitor the variation of concentration of PCDD/DFs between the gaseous phase-particulate phases in the ambient air of urban area in Korea. This monitoring is evaluated by using the Junge-Pankow model and the Koa absorption model with the application of the Octanol-air partition coefficient. In this study, the ambient air samples were analyzed according to each congener group of the PCDD/DFs by HRGC/HRMS, which have been investigated for the past 5 years. In the results, the annual variation in the concentration level of ∑PCDD/DFs in TSP was increased from 1588 fg/m3 in 1998 to 5123 fg/m3 in 2002, and from 31 fg I-TEQ/m3 to 94 fg I-TEQ/m 3 in the ∑I-TEQ. In the case of PUF of gaseous phase sample, their variation was increased from 1615 fg/m3 in 1998 to 2237 fg/m3 in 2002, and in the ∑I-TEQ from 12 fg I-TEQ/m3to 17 fg I-TEQ/m3. The relative coefficient between the gas phase concentration of PCDD/DFs and the temperature was a value of 0.744; the contributive rate of the temperature to the gaseous phase concentration was 0.554. According to the results, the pattern of the coefficient of distribution based on log PL0 is similar to the ambient air of the urban areas.
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KEYWORD
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PCDD/DFs, Annual variation, Ambient air, Gas/Particle partitioning
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