1999 Volume 36 Pages 61-71
Personal exposure levels to nitrogen dioxide (NO2) and volatile organic compounds (VOCs;benzene, toluene, ethyl benzene, xylenes) in the atmosphere were measured in three districts usingpassive samplers. Three districts, each 5km × 5km scale, were selected for their different populationdensities. Twenty five households were selected as the targets in each district and the exposure levels ofthe father, the mother, a child, indoor and outdoor of each household were measured. It was calculatedthat the geometric standard deviations (GSDs) of the personal exposure levels were about 1.2 for NO2and 1.6 to 1.8 for VOCs. The GSDs among the father, the mother and the child in the same district canbe regarded the same for all substances. GSDs of the father, the mother and the child were not regardedthe same among three districts except NO2 and benzene. In regard to the correlation of the exposuresbetween the subjects, good correlation relationships were shown between the mother and the child andalso between outdoor and indoor. On the other hand, only poor correlation relationships were observedbetween the father and the mother and between the father and the child.
