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Environ Sci Technol

Title:		Numerical Simulations of Synthetic Ester Hydrolysis in the Indoor Environment
Author(s):		Maeng DY; McNeill VF;
Address:		"Department of Chemical Engineering, Columbia University, New York, New York 10027, United States. Department of Earth and Environmental Sciences, Columbia University, New York, New York 10027, United States"
Journal Title:		Environ Sci Technol
Year:		2023
Volume:		20230613
Issue:		25
Page Number:		9234 - 9242
DOI:		10.1021/acs.est.3c00847
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"The hydrolysis of synthetic esters (SEs), including phthalates and adipates, in damp indoor environments can lead to the release of volatile organic compounds implicated in poor air quality and acute health impacts, known as 'sick building syndrome' (SBS). We have adapted the multiphase atmospheric chemistry box model, GAMMA, to simulate SE hydrolysis occurring in surface films in the indoor environment, along with multilayer boundary layer mass transfer and ventilation, in order to investigate this phenomenon on a process level. We then applied the model to analyze three scenarios in which hydrolysis has been hypothesized to have a significant impact on indoor air quality. Simulation results suggest that (1) alkaline hydrolysis of bis(2-ethylhexyl) adipate (DEHA) and bis(2-ethylhexyl) phthalate (DEHP) from PVC flooring on damp surfaces alone is not sufficient to explain the levels of 2-ethylhexanol reported in indoor air during episodes of SBS; (2) acute exposure to 2,2,4-trimethyl-1,3-pentanediol (TMPD) may be of concern during and shortly after the application of latex paint on an alkaline surface; and (3) alkaline hydrolysis of SEs following their airborne uptake in aqueous films is not expected to generate considerable amounts of alcohols associated with SBS"
Keywords:		"Plasticizers Esters Hydrolysis *Phthalic Acids/analysis *Air Pollution, Indoor/analysis Gamma-cie sick building syndrome synthetic ester hydrolysis volatile organic compounds;"
Notes:		"MedlineMaeng, Do Young McNeill, V Faye eng Research Support, Non-U.S. Gov't 2023/06/13 Environ Sci Technol. 2023 Jun 27; 57(25):9234-9242. doi: 10.1021/acs.est.3c00847. Epub 2023 Jun 13"