RELATIONSHIPS BETWEEN INDOOR AND OUTDOOR AIR-QUALITY DURING THE SUMMER SEASONS IN KOREA

The annular denuder system (ADS) was used to determine quantitatively the relationship between indoor and outdoor air. All indoor and outdoo r measurements were done simultaneously using the ADS in Chongju, Kore a during the summer season. The data set was collected on eight differ ent days with a 24 h sampling period from 27 July 1995 to 27 August 19 95. The chemical species measured were HNO3, HNO2, SO2 and NH3 in the gas phase and PM(2.5)(d(p) < 2.5 mu m), SO42-, NO3- and NH4+ in the pa rticulate phase. For these data, outdoor air contributed from 50 to 10 0% of indoor pollution environment during the summer season in Korea. Indoor concentrations for HNO3, SO2, PM(2.5), SO42- and NH4+ were sign ificantly related to the corresponding outdoor concentrations. These d ata are the first reported in Korea collected with the ADS. (C) 1997 E lsevier Science Ltd.