Inventory of Ozone Precursor VOCs from Organic Solvents Used in Residential Workplaces and Assessment of Ozone Formation Contribution

Chamber emission tests were performed to evaluate the contribution of volatile organic compounds (VOCs) to ozone formation discharged from organic solvents frequently used in the printing factories, laundry shops, beauty salons, and car-painting garages near residential areas. Analysis of OH loss rate (Lx^OH) and ozone formation potential (OFP) in terms of OH loss rate constant (kx^OH) and the maximum incremental reactivity (MIR) revealed the possibility of ozone formation. According to the emission list of organic solvents, 99% out of VOCs generated in printing and car-painting workshops were aromatic compounds. Among them, 60 to 70% of aromatics and 20 to 30% of alkanes evaporated directly from inks and paints. The solvents used in laundry released a large volume of alkanes (more than 93%), and 90% of these are C10~C12 alkane-based precursors that form ozone.