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Int J Environ Res Public Health

Title:		Sources of propylene glycol and glycol ethers in air at home
Author(s):		Choi H; Schmidbauer N; Spengler J; Bornehag CG;
Address:		"Department of Environmental Health, Harvard School of Public Health, USA. hchoi@hsph.harvard.edu"
Journal Title:		Int J Environ Res Public Health
Year:		2010
Volume:		20101215
Issue:		12
Page Number:		4213 - 4237
DOI:		10.3390/ijerph7124213
ISSN/ISBN:		1660-4601 (Electronic) 1661-7827 (Print) 1660-4601 (Linking)
Abstract:		"Propylene glycol and glycol ether (PGE) in indoor air have recently been associated with asthma and allergies as well as sensitization in children. In this follow-up report, sources of the PGEs in indoor air were investigated in 390 homes of pre-school age children in Sweden. Professional building inspectors examined each home for water damages, mold odour, building's structural characteristics, indoor temperature, absolute humidity and air exchange rate. They also collected air and dust samples. The samples were analyzed for four groups of volatile organic compounds (VOCs) and semi-VOCs (SVOCs), including summed concentrations of 16 PGEs, 8 terpene hydrocarbons, 2 Texanols, and the phthalates n-butyl benzyl phthalate (BBzP), and di(2-ethylhexyl)phthalate (DEHP). Home cleaning with water and mop >/= once/month, repainting >/= one room prior to or following the child's birth, and 'newest' surface material in the child's bedroom explained largest portion of total variability in PGE concentrations. High excess indoor humidity (g/m(3)) additionally contributed to a sustained PGE levels in indoor air far beyond several months following the paint application. No behavioral or building structural factors, except for water-based cleaning, predicted an elevated terpene level in air. No significant predictor of Texanols emerged from our analysis. Overall disparate sources and low correlations among the PGEs, terpenes, Texanols, and the phthalates further confirm the lack of confounding in the analysis reporting the associations of the PGE and the diagnoses of asthma, rhinitis, and eczema, respectively"
Keywords:		"Air Pollution, Indoor/analysis Asthma/etiology Case-Control Studies Child Child, Preschool Eczema/etiology Household Products/analysis/*toxicity Housing Humans Propylene Glycols/analysis/*toxicity Rhinitis/etiology Sweden Volatile Organic Compounds/analys;"
Notes:		"MedlineChoi, Hyunok Schmidbauer, Norbert Spengler, John Bornehag, Carl-Gustaf eng T32 ES007069/ES/NIEHS NIH HHS/ T32 ES 07069/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Switzerland 2011/02/15 Int J Environ Res Public Health. 2010 Dec; 7(12):4213-37. doi: 10.3390/ijerph7124213. Epub 2010 Dec 15"