Why Indoor Chemistry Matters: A National Academies Consensus Report

Habre, Rima; Dorman, David C.; Abbatt, Jonathan P. D.; Bahnfleth, William P.; Carter, Ellison; Farmer, Delphine K.; Gawne-Mittelstaedt, Gillian; Goldstein, Allen H.; Grassian, Vicki H.; Morrison, Glenn; Peccia, Jordan; Poppendieck, Dustin G.; Prather, Kimberly A.; Shiraiwa, Manabu; Stapleton, Heather M.; Williams, Meredith; Harries, Megan E.

doi:10.1021/acs.est.2c04163

Cited by 17 publications

(11 citation statements)

References 3 publications

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“…As for rooms illuminated with large windows, the irradiance still dozens of times lower than outdoors even at noon and the light with wavelength lower than 320 nm would be filtered by glasses [75,193] . The photochemical process is relatively inactive, but various ways exist to form secondary pollutants [194,195] . Ozone can react with terpenes or other unsaturated organic compounds to generate OH radicals, which can react with primary pollutants [76] .…”

Section: Indoor Air Pollutantsmentioning

confidence: 99%

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Toxicological Effects of Secondary Air Pollutants

Xiang

Wang

et al. 2023

Chem. Res. Chin. Univ.

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S econdary air pollutants, originating from gaseous pollutants and primary particulate matter emitted by natural sources and human activities, undergo complex atmospheric chemical reactions and multiphase processes. Secondary gaseous pollutants represented by ozone and secondary particulate matter, including sulfates, nitrates, ammonium salts, and secondary organic aerosols, are formed in the atmosphere, affecting air quality and human health. This paper summarizes the formation pathways and mechanisms of important atmospheric secondary pollutants. Meanwhile, different secondary pollutants’ toxicological effects and corresponding health risks are evaluated. Studies have shown that secondary pollutants are generally more toxic than primary ones. However, due to their diverse source and complex generation mechanism, the study of the toxicological effects of secondary pollutants is still in its early stages. Therefore, this paper first introduces the formation mechanism of secondary gaseous pollutants and focuses mainly on ozone’s toxicological effects. In terms of particulate matter, secondary inorganic and organic particulate matters are summarized separately, then the contribution and toxicological effects of secondary components formed from primary carbonaceous aerosols are discussed. Finally, secondary pollutants generated in the indoor environment are briefly introduced. Overall, a comprehensive review of secondary air pollutants may shed light on the future toxicological and health effects research of secondary air pollutants.

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Section: Indoor Air Pollutantsmentioning

confidence: 99%

“…Compared with traditional air pollutants, the exposure patterns of indoor pollutants and their atmospheric oxidation products are more diverse and indirect [195] . When assessing the health risks of such pollutants, the influence of exposure methods should be carefully considered [205] .…”

Section: Reviewmentioning

confidence: 99%

Toxicological Effects of Secondary Air Pollutants

Xiang

Wang

et al. 2023

Chem. Res. Chin. Univ.

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“…47 Despite the importance of indoor environments in assessing human exposure risks, the current understanding of indoor contaminants is incomplete. 48,49 Human exposure pathways to emerging indoor contaminants include air inhalation, dust ingestion, and dermal contact. Of these pathways, dust ingestion is generally deemed to be the major pathway for most contaminants of emerging concern.…”

Section: Introductionmentioning

confidence: 99%

“…Concentrations of contaminants in indoor environments are often higher than those in outdoor environments, since numerous synthetic chemicals are used indoors . Despite the importance of indoor environments in assessing human exposure risks, the current understanding of indoor contaminants is incomplete. , Human exposure pathways to emerging indoor contaminants include air inhalation, dust ingestion, and dermal contact. Of these pathways, dust ingestion is generally deemed to be the major pathway for most contaminants of emerging concern. , However, the health risk of exposure to indoor dust-bound synthetic antioxidants has rarely been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Synthetic Antioxidants as Contaminants of Emerging Concern in Indoor Environments: Knowns and Unknowns

Ji,

Liang,

Wang

et al. 2023

Environ. Sci. Technol.

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“…For example, relative humidity is known to be an important environmental factor that influences VOC concentrations in indoor air and surface chemistry. − When the relative humidity (RH) increases, the adsorption of nonpolar VOCs on indoor surfaces decreases due to the competitive adsorption of water on the surface. ,− However, RH can have little change in the adsorption of polar VOCs, which is attributed to the stronger interactions between the adsorbate and the surface for these polar molecules and/or the adsorption of VOCs into the thin adsorbed water layer. ,,,,− …”

Section: Introductionmentioning

confidence: 99%

Comparison of the Adsorption–Desorption Kinetics of Limonene and Carvone on TiO₂ and SiO₂ Surfaces under Different Relative Humidity Conditions

et al. 2022

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Adsorption and desorption of volatile organic compounds (VOCs) on indoor material surfaces can impact VOC concentrations in indoor air. In this study, we investigate the adsorption and desorption kinetics of limonene and one of its oxidation products, carvone, at 297 ± 1 K using in situ Fourier transform infrared (FTIR) spectroscopy. In particular, the adsorption and desorption kinetics of limonene and carvone on two model indoor-relevant surfaces, TiO2 (a component of paint and self-cleaning surfaces) and SiO2 (a model for window glass), are compared at low relative humidity as well as at higher relative humidity. Carvone readily partitions to both surfaces with slower desorption kinetics compared to limonene. Under dry conditions, the desorption kinetics of limonene is about 40 times faster than that of carvone from TiO2, and the desorption kinetics of limonene and carvone from TiO2 are about two and four times slower than on SiO2, respectively. Under high relative humidity conditions, the presence of adsorbed water on both TiO2 and SiO2 surfaces generally increases the desorption kinetics of limonene yet has no effect on the desorption kinetics of carvone. The K2-SURF kinetics model has been previously applied to limonene adsorption/desorption on SiO2, and here, it is used to obtain a detailed mechanism for limonene interactions on TiO2 as a function of relative humidity to explain the observed kinetics. Importantly, the combined experimental results with kinetic modeling and classical and ab initio molecular dynamics simulations provide mechanistic insights into the heterogeneous interactions of volatile organic compounds on indoor-relevant surfaces and implications for indoor air quality.

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Why Indoor Chemistry Matters: A National Academies Consensus Report

Cited by 17 publications

References 3 publications

Toxicological Effects of Secondary Air Pollutants

Toxicological Effects of Secondary Air Pollutants

Synthetic Antioxidants as Contaminants of Emerging Concern in Indoor Environments: Knowns and Unknowns

Comparison of the Adsorption–Desorption Kinetics of Limonene and Carvone on TiO₂ and SiO₂ Surfaces under Different Relative Humidity Conditions

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Why Indoor Chemistry Matters: A National Academies Consensus Report

Cited by 17 publications

References 3 publications

Toxicological Effects of Secondary Air Pollutants

Toxicological Effects of Secondary Air Pollutants

Synthetic Antioxidants as Contaminants of Emerging Concern in Indoor Environments: Knowns and Unknowns

Comparison of the Adsorption–Desorption Kinetics of Limonene and Carvone on TiO2 and SiO2 Surfaces under Different Relative Humidity Conditions

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Product

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Comparison of the Adsorption–Desorption Kinetics of Limonene and Carvone on TiO₂ and SiO₂ Surfaces under Different Relative Humidity Conditions