Per- and polyfluoroalkyl substances (PFASs) in indoor air and dust from homes and various microenvironments in China: implications for human exposure
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A newly developed solid-phase extraction cartridge composed of mixed sorbents was optimized for collection of both neutral and ionizable per- and polyfluoroalkyl substances (PFASs) in indoor air. Eighty-one indoor air samples and 29 indoor dust samples were collected from rooms of homes and hotels, textile shops, and cinemas in Tianjin, China. Fluorotelomer alcohols (FTOHs) were the predominant PFASs found in air (250–82 300 pg/m 3 ) and hotel dust (24.8–678 ng/g). Polyfluoroalkyl phosphoric acid diesters were found at lower levels of nd–125 pg/m 3 in air and 0.32–183 ng/g in dust. Perfluoroalkyl carboxylic acids (PFCAs) were dominant ionizable PFASs in air samples (121–20 600 pg/m 3 ) with C4–C7 PFCAs contributing to 54% ± 17% of the profiles, suggesting an ongoing shift to short-chain PFASs. Long-chain PFCAs (C > 7) were strongly correlated and the intermediate metabolite of FTOHs, fluorotelomer unsaturated carboxylic acids, occurred in all the air samples at concentrations up to 413 pg/m 3, suggesting the transformation of precursors such as FTOHs in indoor environment. Daily intake of ∑PFASs via air inhalation and dust ingestion was estimated at 1.04–14.1 ng/kg bw/d and 0.10–8.17 ng/kg bw/d, respectively, demonstrating that inhalation of air with fine suspended particles was a more important direct exposure pathway than dust ingestion for PFASs to adults.
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In indoor air, FTOHs were predominantly detected in both hotels and houses in the range of 246-62,100 pg/m3.
“Regarding PFAS in indoor air, Yao et al. reported that FTOHs were predominantly detected in both hotels and houses in the range of 246e62,100 pg/m 3 .”
From Worldwide trends in tracing poly- and perfluoroalkyl substances (PFAS) in the environment (2019) · cites this paper as [22]
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- Authors
- Yao, Y., Zhao, Y., Sun, H., Chang, S., Zhu, L., Alder, A. C., & Kannan, K.
- Affiliations
- Nankai University (CN)
- New York State Department of Health (US)
- Corresponding author
- Sun, Hongwen
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-02-08
- Volume
- 52
- Issue
- 5
- Pages
- 3156-3166
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2786398242
- Cited by
- 177
- References
- 76
- Citations by year
- 2026: 30 · 2025: 21 · 2024: 26 · 2023: 23 · 2022: 24 · 2021: 17 · 2020: 19 · 2019: 10 · 2018: 7
- FWCI
- 6.91
- Type
- journal article
- Language
- en
- Open access
- green
- www.dora.lib4ri.ch
- Locations
- Environmental Science & Technology (publishedVersion)
- PubMed (publishedVersion)
- DORA Eawag (Swiss Federal Institute of Aquatic Science and Technology (Eawag)) (submittedVersion)
- Funders
- Ministry of Education of the People's Republic of China (T2017002, 20130031110027, IRT13024)
- National Natural Science Foundation of China (41573097, 41603101)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
- Keywords
- per- and polyfluoroalkyl substances, PFASs, indoor air, house dust, human exposure, fluorotelomer alcohols, perfluorinated carboxylic acids, hotels, textile shop, cinema, inhalation exposure, dust ingestion, daily intake, short-chain PFASs, Tianjin
- MeSH terms
- Adult, Carboxylic Acids, China, Dust, Environmental Monitoring, Fluorocarbons, Humans, Air Pollution, Indoor
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