« Previous AbstractIdentifying volatile organic compounds used for olfactory navigation by homing pigeons    Next AbstractElucidation of key odorants in Beninese Roselle (Hibiscus sabdariffa L.) infusions prepared by hot and cold brewing »

Environ Sci Technol

Title:		"Effect of Ozone, Clothing, Temperature, and Humidity on the Total OH Reactivity Emitted from Humans"
Author(s):		Zannoni N; Li M; Wang N; Ernle L; Beko G; Wargocki P; Langer S; Weschler CJ; Morrison G; Williams J;
Address:		"Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany. International Centre for Indoor Environment and Energy, Department of Civil Engineering, Technical University of Denmark, 2800 Lyngby, Denmark. IVL Swedish Environmental Research Institute, 41133 Goteborg, Sweden. Division of Building Services Engineering, Department of Architecture and Civil Engineering, Chalmers University of Technology, 41296 Goteborg, Sweden. Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, New Jersey 08854, United States. Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7431, United States"
Journal Title:		Environ Sci Technol
Year:		2021
Volume:		20210930
Issue:		20
Page Number:		13614 - 13624
DOI:		10.1021/acs.est.1c01831
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Print) 0013-936X (Linking)
Abstract:		"People influence indoor air chemistry through their chemical emissions via breath and skin. Previous studies showed that direct measurement of total OH reactivity of human emissions matched that calculated from parallel measurements of volatile organic compounds (VOCs) from breath, skin, and the whole body. In this study, we determined, with direct measurements from two independent groups of four adult volunteers, the effect of indoor temperature and humidity, clothing coverage (amount of exposed skin), and indoor ozone concentration on the total OH reactivity of gaseous human emissions. The results show that the measured concentrations of VOCs and ammonia adequately account for the measured total OH reactivity. The total OH reactivity of human emissions was primarily affected by ozone reactions with organic skin-oil constituents and increased with exposed skin surface, higher temperature, and higher humidity. Humans emitted a comparable total mixing ratio of VOCs and ammonia at elevated temperature-low humidity and elevated temperature-high humidity, with relatively low diversity in chemical classes. In contrast, the total OH reactivity increased with higher temperature and higher humidity, with a larger diversity in chemical classes compared to the total mixing ratio. Ozone present, carbonyl compounds were the dominant reactive compounds in all of the reported conditions"
Keywords:		"Adult *Air Pollutants/analysis *Air Pollution, Indoor/analysis Clothing Environmental Monitoring Humans Humidity *Ozone/analysis Temperature *Volatile Organic Compounds/analysis human skin emissions indoor chemistry indoor ozone ozone deposition velocity;"
Notes:		"MedlineZannoni, Nora Li, Mengze Wang, Nijing Ernle, Lisa Beko, Gabriel Wargocki, Pawel Langer, Sarka Weschler, Charles J Morrison, Glenn Williams, Jonathan eng Research Support, Non-U.S. Gov't 2021/10/01 Environ Sci Technol. 2021 Oct 19; 55(20):13614-13624. doi: 10.1021/acs.est.1c01831. Epub 2021 Sep 30"