The PM10 concentration and chemical composition in an western area of Busan were surveyed between March, 2001 and February, 2002. The mean concentration was 98.2 ㎍/㎥ with a range of 18.1 to 330.6 ㎍/㎥. The magnitude of metallic elements in PM10 is as follows in decreasing order: K>Ca>Na>Al>Fe. The mean values of crustal enrichment factors for four elements (Cd, Ni, Pb and Zn) were all higher than 10, which presumably resulted from the effect of anthropogenic origin. Moreover, the wintertime values were higher than springtime and summertime values, possibly due to emissions westerly transported from industries around this area. The contribution of soil particle to airborne particle in the study area was estimated to be 9.5%.

PM10 concentrations were measured in underground stores located in 4 major cities, Chunchon, Wonju, Donghae and Sockcho, in Kangwon-Do using scattering light integrated type digital dust indicator. Personal exposure to PM10 for two women(housekeeper and graduate student) and a man(undergraduate student) were measured also. The dimensional conversion factors for mass concentrations(K) showed some difference among underground stores which were 2.0, 2.7, 3.4, 2.6 ㎍/㎥·CPM in chunchon, Wonju, Donghae and Sockcho, respectively. Average PM_10 concentrations at underground stores were 178 ㎍/㎥ in Chunchon, 141 ㎍/㎥ in Wonju, 125 ㎍/㎥ in Donghe and 59 ㎍/㎥ in Sockcho. The portion of PM10 in total suspended particles was about 50∼60 % as weight. The exposure of graduate student, housekeeper and undergraduate to PM10 during 12 hours were 1004.3 (㎍/㎥)·hr, 907.0 (㎍/㎥)·hr and 691.2 (㎍/㎥)·hr, respectively. Personal exposure to PM10 showed very different according to their activity pattern and they had more than 90 % of their PM10 exposure at indoor environment.