TY - CPAPER KW - Formaldehyde KW - Indoor environment department KW - Volatile organic compounds (VOC) KW - Ozone KW - Terpenes KW - Airflow and pollutant transport group KW - Reactive chemistry KW - Secondary organic aerosols KW - Environmental Chemistry, Exposure and Risk Group AU - Hugo Destaillats AU - Brett C Singer AU - Beverly K Coleman AU - Melissa M Lunden AU - Alfred T Hodgson AU - Charles J Weschler AU - William W Nazaroff AB -

This study investigated secondary air pollutants formed from reactions between constituents of terpene-containing household products and ozone. Gas-phase emissions from three different products were introduced along with ozone into a 198-L Teflon-lined reaction chamber. Gas-phase concentrations of reactive terpenes, terpenoids and oxidation products were measured. When the formulation contained more than one reactive VOC, their relative consumption by ozone was proportional to the initial reactant concentrations and to the rate constants of the respective terpene-ozone reactions. Formaldehyde was a predominant oxidation byproduct for the three studied products. Acetaldehyde and acetone were also detected when two of the products were exposed to ozone. A scanning mobility particle sizer measured particle nucleation events followed by a significant degree of ultrafine particle growth immediately upon mixing of reactants. Elevated concentrations of OH radicals generated by terpene ozonolysis were also measured.

BT - Proceedings of the 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005 C1 -

1.6, 2.6

C2 - LBNL-57038 CY - Beijing, China LA - eng N2 -

This study investigated secondary air pollutants formed from reactions between constituents of terpene-containing household products and ozone. Gas-phase emissions from three different products were introduced along with ozone into a 198-L Teflon-lined reaction chamber. Gas-phase concentrations of reactive terpenes, terpenoids and oxidation products were measured. When the formulation contained more than one reactive VOC, their relative consumption by ozone was proportional to the initial reactant concentrations and to the rate constants of the respective terpene-ozone reactions. Formaldehyde was a predominant oxidation byproduct for the three studied products. Acetaldehyde and acetone were also detected when two of the products were exposed to ozone. A scanning mobility particle sizer measured particle nucleation events followed by a significant degree of ultrafine particle growth immediately upon mixing of reactants. Elevated concentrations of OH radicals generated by terpene ozonolysis were also measured.

PB - Tsinghua University Press PP - Beijing, China PY - 2005 SP - 2081 EP - 2085 T2 - Proceedings of the 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005 T3 - 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005 TI - Secondary Pollutants From Cleaning Products And Air Fresheners In The Presence Of Ozone VL - 2(9) ER -