수도권 지역 PM10의 PAHs 농도 특성

Abstract

The concentrations of PAHs in PM10 fine particles were determined at two sites, which were Jongno, one of the urban core sites of Seoul, and Yongin, a downwind site of Seoul. The average concentration of PAHs in PM10 was 19.92±18.49 ng m-3 with the range of 1.28~81.22 ng m-3 at Jongno site of Seoul from August 2006 to August 2007, and 14.06±9.96 ng m-3 with the range of 1.66~31.84 ng m-3 at Yongin site from September to November of 2006. In the results of monthly comparison, the concentration of PAHs in August was the lowest level of 3.23 ng m-3, but the highest level of 46.24 ng m-3 in January. The seasonal comparison showed the concentration in winter was higher by the factor of 11.9 than in summer. The concentrations of PAHs during a warm period (November~March) increased as 5.1 times higher than those during a cold period (April~October). The concentrations of PAHs were assumed to be largely attributed to the consumption of fossil fuels, temperature, mixing height, and photochemical reactions in Seoul metropolitan area.