Surface chemistry of a pine-oil cleaner and other terpene mixtures with ozone on vinyl flooring tiles.
Indoor environments are dynamic reactors where consumer products (such as cleaning agents, deodorants, and air fresheners) emit volatile organic compounds (VOCs) that can subsequently interact with indoor oxidants such as ozone (O(3)), hydroxyl radicals, and nitrate radicals. Typically, consumer products consist of mixtures of VOCs and semi-VOCs which can react in the gas-phase or on surfaces with these oxidants to generate a variety of oxygenated products. In this study, the reaction of a pine-oil cleaner (POC) with O(3) (100ppb) on a urethane-coated vinyl flooring tile was investigated at 5% and 50% relative humidity. These results were compared to previous α-terpineol+O(3) reactions on glass and vinyl surfaces. Additionally, other terpene and terpene alcohol mixtures were formulated to understand the emission profiles as seen in the POC data. Results showed that the α-terpineol+O(3) reaction products were the prominent species that were also observed in the POC/O(3) surface experiments. Furthermore, α-terpineol+O(3) reactions generate the largest fraction of oxygenated products even in equal mixtures of other terpene alcohols. This finding suggests that the judicial choice of terpene alcohols for inclusion in product formulations may be useful in reducing oxidation product emissions.
Exposure Assessment Branch, Health Effects Laboratory, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, United States. bvo2@cdc.gov
Jason E
JE
Ham
J Raymond
JR
Wells
D016902:Air Pollution, Indoor / Q000032:analysis; D003252:Construction Materials; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes / Q000032:analysis / Q000737:chemistry; D003902:Detergents / Q000737:chemistry*; D039821:Monoterpenes / Q000032:analysis / Q000737:chemistry; D010126:Ozone / Q000737:chemistry*; D028223:Pinus; D010938:Plant Oils / Q000737:chemistry*; D013499:Surface Properties; D013729:Terpenes / Q000032:analysis / Q000737:chemistry*; D014520:Urethane / Q000737:chemistry*; D014753:Vinyl Compounds / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry
D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D003902:Detergents; D039821:Monoterpenes; D010938:Plant Oils; D013729:Terpenes; D014753:Vinyl Compounds; D055549:Volatile Organic Compounds; C016775:alpha-terpineol; D014520:Urethane; D010126:Ozone