Secondary Pollutants From Cleaning Products And Air Fresheners In The Presence Of Ozone

Publication Type

Conference Paper

LBNL Report Number

LBNL-57038

Abstract

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.

Conference Name

Proceedings of The 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005

Year of Publication

2005

Publisher

Tsinghua University Press

Conference Location

Beijing, China