Aldehydes in Exhaled Breath during E-Cigarette Vaping: Pilot Study Results
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Authors
Samburova, Vera
Bhattarai, Chiranjivi
Strickland, Matthew
Darrow, Lyndsey A.
Angermann, Jeff E.
Son, Yeongkwon
Khlystov, Andrey
Issue Date
2018
Type
Article
Language
Keywords
aldehydes , breath analysis , e-cigarette emissions , respiratory tract retention , exposure
Alternative Title
Abstract
Several studies have shown the presence of aldehydes (i.e., formaldehyde, acrolein) in mainstream emissions of some e-cigarettes. For this reason, concerns have been raised regarding potential toxicity. The purpose of this research was to measure levels of carbonyls in exhaled breath of e-cigarette users during vaping sessions and estimate the respiratory tract (RT) uptake of specific aldehydes, including formaldehyde and acetaldehyde. We measured concentrations of 12 carbonyls in e-cigarette aerosols produced directly by e-cigarettes and in the exhaled breath of 12 participants (19 sessions). Carbonyls were sampled on 2,4-dinitrophenylhydrazine (DNPH) cartridges and analyzed with high performance liquid chromatography (HPLC) coupled with a UV/Vis photodiode detector. We found that in most cases, levels of aldehydes and methyl ethyl ketone (MEK) were significantly higher (2-125 times) in exhaled e-cigarette breaths than in pre-exposed breath. Exposure levels for the most abundant individual carbonyls in e-cigarette emissionsformaldehyde, acetaldehyde, acroleinwere between the limit of quantification (LOQ) and 24.4 gpuff(-1). The mean retention of formaldehyde in the respiratory tract was 99.7 +/- 0.9% for all participants, while acetaldehyde retention was 91.6 +/- 9.9%. Within the limitation of a small number of participants, our results showed that there is an increase in breath carbonyls during e-cigarette use.
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Citation
Samburova, V., Bhattarai, C., Strickland, M., Darrow, L., Angermann, J., Son, Y., & Khlystov, A. (2018). Aldehydes in Exhaled Breath during E-Cigarette Vaping: Pilot Study Results. Toxics, 6(3), 46. doi:10.3390/toxics6030046
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License
Creative Commons Attribution 4.0 International
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Volume
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PubMed ID
ISSN
2305-6304