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This study was designed to investigate the characteristics of atmospheric concentrations of toxic volatileorganic compounds (VOCs) in Korea. Target compounds included 1, 3-butadiene, aromatics such as BTEX,and a number of carbonyl compounds. In this paper, as the second part of the study, the seasonal and locationalconcentrations of atmospheric VOCs were evaluated. Sampling was conducted seasonally at seven samplingsites, each of them representing a large urban area (commercial and residential), a small urban area (com-mercial and residential), an industrial area(a site within the complex and a residential), and a background placein Korea. In general, higher concentrations were found in the petro-chemical industrial site than other sites,while VOCs measured in commercial (heavy-traffic) sites were higher than residential sites. Seasonality of