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자료유형
학술저널
저자정보
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제21권 제3호
발행연도
2005.6
수록면
285 - 293 (9page)

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This study was aimed at estimation of gas-particle partitioning of polychlorinated biphenyls (PCBs) in ambient air. The samples were collected at urban site in Japan from March 2002 to January 2003. The concentration of total PCBs (from 4 CB to 10 CB) and TEQ (Toxic equivalent) ranged from 62 to 247 pg/㎥ and from 2 to 14 fgTEQ/㎥, respectively. The average contribution (%) of gas phase to total PCBs concentration was above 80%, which suggests that in the atmosphere PCBs predominantly existed in the gas phase. The weak correlations between total PCBs concentration and temperature was found. However this result was due to a typhoon during summer and raining during sampling period. The gas-particle partition coefficient (Kp) was obtained as a function of temperature. The partition ratio of gaseous and particulate phase PCBs can be estimated for an arbitrary temperature. The plot of gas/particle partition coefficient (log Kp) vs. sub-cooled liquid vapor pressure (log P_L) had reasonable correlations for individual samples but the slope varied among the samples (coefficients of determination for log Kp versus log P_L plot were>0.76 (p<0.0001), except for 3 samples). As a result, the variations in the slope among the sampling period may be due to change of temperature, raining during sampling period and wind in this study.

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Abstract

1. 서 론

2. 실험 및 방법

3. 결과 및 고찰

4. 결 론

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