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Atmospheric levels of polychlorinated biphenyls (PCBs) at the King Sejong station were monitored for one year using passive air samplers. Low-chlorinated PCB homologues were predominant in all samples. PCB levels were observed to decrease with distance from the station, which may indicate that a significant part of PCBs could be of local origin. Although the level of PCBs at the King Sejong station is very low (Σ?PCB (18, 52, 101, 118, 128, 138, 153, 180, 187): 2.3 pg m?³) probably due to decrease in the global PCB emissions, it is one order of magnitude higher than a background level in the Antarctic. Based on this preliminary study, more interpretation on PCB data and meteorological conditions is required.

Year-round Monitoring of Atmospheric Polychlorinated Biphenyls (PCBs) at the King Sejong Station in the Antarctic