Carbonyl Levels and Personal Exposures in Large Shopping Malls of Nanchang, China

Ambient levels of carbonyl compounds and their possible sources, diurnal variations, and personal exposure were investigated in four types of large shopping malls (including department store, supermarket, and bookstore and furniture store) in urban district of Nanchang, China. Eighteen out of the twenty target carbonyls were detected in summer samples while only fifteen carbonyls were detected in winter samples. The descending order of total mean concentration was furniture store (102.2 ± 22.9 µg m−3)>supermarket (84.2 ± 15.7 µg m−3)>department store (79.0 ± 21.1 µg m−3)>book store (68.6 ± 14.5 µg m−3). A significant correlation between the concentration of the low molecular-weight (LMW) carbonyl compounds (carbonyl compounds were found to be higher than their outdoor co...