Emerging investigator series: deposited particles and human lung lining fluid are dynamic, chemically-complex reservoirs leading to thirdhand smoke emissions and exposure

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Authors

SHEU Roger HASS-MITCHELL Tori RINGSDORF Akima BERKEMEIER Thomas MACHESKY Jo EDTBAUER Achim KLUPFEL Thomas FILIPPI Alexander BANDOWE Benjamin A. Musa WIETZORECK Marco KUKUČKA Petr TONG Haijie LAMMEL Gerhard POSCHL Ulrich WILLIAMS Jonathan GENTNER Drew R.

Year of publication 2022
Type Article in Periodical
Magazine / Source ENVIRONMENTAL SCIENCE-ATMOSPHERES
MU Faculty or unit

Faculty of Science

Citation
Web https://pubs.rsc.org/en/content/articlelanding/2022/EA/D1EA00107H
Doi http://dx.doi.org/10.1039/d1ea00107h
Keywords POLYCYCLIC AROMATIC-HYDROCARBONS; ENVIRONMENTAL TOBACCO-SMOKE; 2-DIMENSIONAL GAS-CHROMATOGRAPHY; VOLATILE ORGANIC-COMPOUNDS; FLIGHT MASS-SPECTROMETRY; PARTICULATE MATTER; CIGARETTE-SMOKE; PHASE ORGANICS; CANCER-RISK; PTR-TOF
Description Thirdhand smoke (THS) persists in locations where smoking previously occurred and can be transported into non-smoking environments, leading to non-smoker exposure. Laboratory experiments using high-resolution mass spectrometry demonstrate that deposited particulate matter (PM) and smoke-exposed surrogate lung lining fluid (LLF) are substantial, chemically-complex reservoirs of gas-phase THS emissions, including hazardous air pollutants, polycyclic aromatic compounds, and nitrogen/oxygen-containing species. Both PM and LLF are persistent real-world THS reservoirs that chemically evolve over time, and can act as vehicles for the transport and emission of reactive pollutants and their reaction byproducts (e.g., acrolein). Deposited PM on clothes, furnishings, bodies, and/or airways will emit volatile to semi-volatile gases over long lifetimes, which can re-partition to other indoor materials and increase their overall persistence. On the other hand, LLF off-gassing consists predominantly of volatile organic compounds in amounts influenced by their aqueous solubilities, and their persistence in breath will be prolonged by re-distribution across internal aqueous reservoirs, as corroborated by multicompartment modeling in this study.
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