Abstract
Personal exposure to nitrogen dioxide for urban office workers in the central area of Tokyo were examined in two seasons, fall and winter. Indoor and outdoor levels in the office and in the home of the participants were simultaneously measured with small passive sampler for 24 hours. Each participant kept a diary of his activities, those are, time spent indoors at home and office, during commuting and staying another places. NO2 exposure level predicted from a time-weighted activity model were compared with the measured value by sampler.
It suggested that the model provided a good prediction of personal exposure level of nitrogen dioxide.
