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J Hazard Mater

Title:		The formation of ultra-fine particles during ozone-initiated oxidations with terpenes emitted from natural paint
Author(s):		Lamorena RB; Jung SG; Bae GN; Lee W;
Address:		"Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-Dong, Yuseong-Gu, Daejeon 305-701, Republic of Korea"
Journal Title:		J Hazard Mater
Year:		2007
Volume:		20060704
Issue:		1
Page Number:		245 - 251
DOI:		10.1016/j.jhazmat.2006.06.120
ISSN/ISBN:		0304-3894 (Print) 0304-3894 (Linking)
Abstract:		"The formation of secondary products during the ozone-initiated oxidations with biogenic VOCs emitted from natural paint was investigated in this study. Mass spectrometry and infrared spectroscopy measurements have shown that the major components of gas-phase chemicals emitted from natural paint are monoterpenes including alpha- and beta-pinenes, camphene, p-cymene, and limonene. A significant formation of gaseous carbonyl products and nano-sized particles (4.4-168nm) was observed in the presence of ozone. Carboxylic acids were also observed to form during the reactions (i.e. formic acid at 0.170ppm and acetic acid at 0.260ppm). The formation of particles increased as the volume of paint introduced into a reaction chamber increased. A secondary increase in the particle number concentration was observed after 440min, which suggests further partitioning of oxidation products (i.e. carboxylic acids) into the particles previously existing in the reaction chamber. The growth of particles increased as the mean particle diameter and particle mass concentrations increased during the reaction. The experimental results obtained in this study may provide insight into the potential exposure of occupants to irritating chemical compounds formed during the oxidations of biogenic VOCs emitted from natural paint in indoor environments"
Keywords:		"Air Pollution, Indoor/*analysis Organic Chemicals/analysis Oxidation-Reduction Ozone/*chemistry Paint/*analysis *Particulate Matter Terpenes/*analysis Volatilization;"
Notes:		"MedlineLamorena, Rheo B Jung, Sang-Guen Bae, Gwi-Nam Lee, Woojin eng Research Support, Non-U.S. Gov't Netherlands 2006/08/16 J Hazard Mater. 2007 Mar 6; 141(1):245-51. doi: 10.1016/j.jhazmat.2006.06.120. Epub 2006 Jul 4"