일본 요코하마 대기 중 PCBs의 가스--입자 분배 = Gas-- Particle Partitioning of PCBs in Ambient Air, Yokohama JapanCorresponding author

다국어 초록 (Multilingual Abstract)

This study was aimed at estimation of gas-particle partitioning of polychlorinated biphenyls(PCBs) in ambientair. The samples were collected at urban site in Japan from March 2002 to January 2003. The concentration of total3 and from 2 to 14 fgTEQ/m3,respectively. The average contribution (%) of gas phase to total PCBs concentration was above 80%, whichsuggests that in the atmosphere PCBs predominantly existed in the gas phase. The weak correlations between totalPCBs concentration and temperature was found. However this result was due to a typhoon during summer andraining during sampling period. The gas- Kp) was obtained as a function oftemperature. The partition ratio of gaseous and particulate phase PCBs can be estimated for an arbitrarytemperature. The plot of gas/particle partition coefcient(logKp) vs. sub-cooled liquid vapor pressure(logPL) hadreasonable correlations for individual samples but the slope varied among the samples (coefficients ofdetermination for logKp versus logPL plot were¤ 0.76 (p0.0001), except for 3 samples). As a result, thevariations in the slope among the sampling period may be due to change of temperature, raining during samplingperiod and wind in this study.

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