Spatial and temporal scales of variability for indoor air constituents
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Historically air constituents have been assumed to be well mixed in indoor environments, with single point measurements and box modeling representing a room or a house. Here we demonstrate that this fundamental assumption needs to be revisited through advanced model simulations and extensive measurements of bleach cleaning. We show that inorganic chlorinated products, such as hypochlorous acid and chloramines generated via multiphase reactions, exhibit spatial and vertical concentration gradients in a room, with short-lived ⋅OH radicals confined to sunlit zones, close to windows. Spatial and temporal scales of indoor constituents are modulated by rates of chemical reactions, surface interactions and building ventilation, providing critical insights for better assessments of human exposure to hazardous pollutants, as well as the transport of indoor chemicals outdoors.
Originalsprog | Engelsk |
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Artikelnummer | 110 |
Tidsskrift | Communications Chemistry |
Vol/bind | 4 |
Udgave nummer | 1 |
DOI | |
Status | Udgivet - dec. 2021 |
Eksternt udgivet | Ja |
Bibliografisk note
Funding Information:
We acknowledge Dr. Paula Olsiewski and Dr. Marina Vance for their leadership and the entire HOMEChem Science Team for conducting the experiment. This work was funded by the Alfred P. Sloan Foundation (G-2020-13912; G-2019-12306; G-2019-12442; G-2017-9944; G-2019-11404; G-2018-11062; G-2018-10083; G-2017-9796).
Publisher Copyright:
© 2021, The Author(s).
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