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Multi-year PAH Behaviours in Atmospheric Particulates According to Land-Use Type
Name ADMIN Date 2012/12/27

Seoung Lak Choi, Seung Ho Shin, Ho Hwan Chun, Wan Kuen Jo*, " Multi-year PAH Behaviours in Atmospheric Particulates According to Land-Use Type" , Aerosol and Air Quality Research ( Ȯ)


*  Corresponding author


ABSTRACT

The present study assessed the multi-year behaviours of high molecular-weight PAHs (4 or more benzene ring)
(benzo(a)anthracene, benzo(a)pyrene (BaP), benzo(b)fluoranthene, benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, and indeno(1,2,3-cd)pyrene) with associated with airborne particulates in five categorical areas of three cities (Seoul, Ulsan, and Gwangyang) and one rural area (Taeahn), utilizing 4-year monitoring data. The order in the mean PAH concentrations was as follows (in descending order) residential-commercial complex (Seoul), traffic junction (Seoul), petrochemical industry (Ulsan), iron and steel industry (Gwangyang), and background area (Taeahn). With a few exceptions, individual congeners exhibited a concentration pattern similar to that of the total PAHs. The high PAH concentrations in the residentialcommercial complex and traffic junction are likely attributable to the heavy traffic in Seoul, South Koreas capital. The inter-annual and seasonal modulations of PAHs were different for the area type, putting in evidence the peculiarities of the land use. It was suggested that neither total PAHs nor BaP alone seem sufficient to index carcinogenicity associated with exposure to these substances. In most cases, the three meteorological parameters (relative humidity, temperature, and wind speed) exhibited a negative correlation with PAH concentrations, although only limited cases demonstrated a statistical significance at p < 0.05.
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