Bedroom Concentrations and Emissions of Volatile Organic Compounds during Sleep

Molinier, Betty; Arata, Caleb; Katz, Erin F.; Lunderberg, David M.; Ofodile, Jennifer; Singer, Brett C.; Nazaroff, William W.; Goldstein, Allen H.

doi:10.1021/acs.est.3c10841

Title: Bedroom Concentrations and Emissions of Volatile Organic Compounds during Sleep

Journal Article · 23 April 2024 · Environmental Science and Technology

DOI: https://doi.org/10.1021/acs.est.3c10841 · OSTI ID:2367280

^[1]; Arata, Caleb ^[1];

^[1]; Lunderberg, David M. ^[1];

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^[2];

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University of California, Berkeley, CA (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Because humans spend about one-third of their time asleep in their bedrooms and are themselves emission sources of volatile organic compounds (VOCs), it is important to specifically characterize the composition of the bedroom air that they experience during sleep. This work uses real-time indoor and outdoor measurements of volatile organic compounds (VOCs) to examine concentration enhancements in bedroom air during sleep and to calculate VOC emission rates associated with sleeping occupants. Gaseous VOCs were measured with proton-transfer reaction time-of-flight mass spectrometry during a multiweek residential monitoring campaign under normal occupancy conditions. Results indicate high emissions of nearly 100 VOCs and other species in the bedroom during sleeping periods as compared to the levels in other rooms of the same residence. Air change rates for the bedroom and, correspondingly, emission rates of sleeping-associated VOCs were determined for two bounding conditions: (1) air exchange between the bedroom and outdoors only and (2) air exchange between the bedroom and other indoor spaces only (as represented by measurements in the kitchen). VOCs from skin oil oxidation and personal care products were present, revealing that many emission pathways can be important occupant-associated emission factors affecting bedroom air composition in addition to direct emissions from building materials and furnishings.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2367280

Journal Information:: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 18 Vol. 58; ISSN 0013-936X

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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54 ENVIRONMENTAL SCIENCES
indoor air
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residential microenvironments
CO2

Title: Bedroom Concentrations and Emissions of Volatile Organic Compounds during Sleep

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References (54)

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