Spatial and temporal scales of variability for indoor air constituents

Pascale S.J. Lakey; Youngbo Won; David Shaw; Freja F. Østerstrøm; James Mattila; Emily Reidy; Brandon Bottorff; Colleen Rosales; Chen Wang; Laura Ampollini; Shan Zhou; Atila Novoselac; Tara F. Kahan; Peter F. DeCarlo; Jonathan P.D. Abbatt; Philip S. Stevens; Delphine K. Farmer; Nicola Carslaw; Donghyun Rim; Manabu Shiraiwa

doi:10.1038/s42004-021-00548-5

Spatial and temporal scales of variability for indoor air constituents

Pascale S.J. Lakey, Youngbo Won, David Shaw, Freja F. Østerstrøm, James Mattila, Emily Reidy, Brandon Bottorff, Colleen Rosales, Chen Wang, Laura Ampollini, Shan Zhou, Atila Novoselac, Tara F. Kahan, Peter F. DeCarlo, Jonathan P.D. Abbatt, Philip S. Stevens, Delphine K. Farmer, Nicola Carslaw, Donghyun Rim, Manabu Shiraiwa

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

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.

Original language	English (US)
Article number	110
Journal	Communications Chemistry
Volume	4
Issue number	1
DOIs	https://doi.org/10.1038/s42004-021-00548-5
State	Published - Dec 2021

All Science Journal Classification (ASJC) codes

General Chemistry
Environmental Chemistry
Biochemistry
Materials Chemistry

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Lakey, P. S. J., Won, Y., Shaw, D., Østerstrøm, F. F., Mattila, J., Reidy, E., Bottorff, B., Rosales, C., Wang, C., Ampollini, L., Zhou, S., Novoselac, A., Kahan, T. F., DeCarlo, P. F., Abbatt, J. P. D., Stevens, P. S., Farmer, D. K., Carslaw, N., Rim, D., & Shiraiwa, M. (2021). Spatial and temporal scales of variability for indoor air constituents. Communications Chemistry, 4(1), Article 110. https://doi.org/10.1038/s42004-021-00548-5

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title = "Spatial and temporal scales of variability for indoor air constituents",

abstract = "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.",

author = "Lakey, {Pascale S.J.} and Youngbo Won and David Shaw and {\O}sterstr{\o}m, {Freja F.} and James Mattila and Emily Reidy and Brandon Bottorff and Colleen Rosales and Chen Wang and Laura Ampollini and Shan Zhou and Atila Novoselac and Kahan, {Tara F.} and DeCarlo, {Peter F.} and Abbatt, {Jonathan P.D.} and Stevens, {Philip S.} and Farmer, {Delphine K.} and Nicola Carslaw and Donghyun Rim and Manabu Shiraiwa",

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doi = "10.1038/s42004-021-00548-5",

language = "English (US)",

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Lakey, PSJ, Won, Y, Shaw, D, Østerstrøm, FF, Mattila, J, Reidy, E, Bottorff, B, Rosales, C, Wang, C, Ampollini, L, Zhou, S, Novoselac, A, Kahan, TF, DeCarlo, PF, Abbatt, JPD, Stevens, PS, Farmer, DK, Carslaw, N, Rim, D & Shiraiwa, M 2021, 'Spatial and temporal scales of variability for indoor air constituents', Communications Chemistry, vol. 4, no. 1, 110. https://doi.org/10.1038/s42004-021-00548-5

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AU - Lakey, Pascale S.J.

AU - Won, Youngbo

AU - Shaw, David

AU - Østerstrøm, Freja F.

AU - Mattila, James

AU - Reidy, Emily

AU - Bottorff, Brandon

AU - Rosales, Colleen

AU - Wang, Chen

AU - Ampollini, Laura

AU - Zhou, Shan

AU - Novoselac, Atila

AU - Kahan, Tara F.

AU - DeCarlo, Peter F.

AU - Abbatt, Jonathan P.D.

AU - Stevens, Philip S.

AU - Farmer, Delphine K.

AU - Carslaw, Nicola

AU - Rim, Donghyun

AU - Shiraiwa, Manabu

PY - 2021/12

Y1 - 2021/12

N2 - 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.

AB - 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.

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Spatial and temporal scales of variability for indoor air constituents

Abstract

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