Aldehydes in Exhaled Breath during E-Cigarette Vaping: Pilot Study Results
AbstractSeveral 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 emissions—formaldehyde, acetaldehyde, acrolein—were between the limit of quantification (LOQ) and 24.4 μg·puff−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. View Full-Text
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Samburova, V.; Bhattarai, C.; Strickland, M.; Darrow, L.; Angermann, J.; Son, Y.; Khlystov, A. Aldehydes in Exhaled Breath during E-Cigarette Vaping: Pilot Study Results. Toxics 2018, 6, 46.
Samburova V, Bhattarai C, Strickland M, Darrow L, Angermann J, Son Y, Khlystov A. Aldehydes in Exhaled Breath during E-Cigarette Vaping: Pilot Study Results. Toxics. 2018; 6(3):46.Chicago/Turabian Style
Samburova, Vera; Bhattarai, Chiranjivi; Strickland, Matthew; Darrow, Lyndsey; Angermann, Jeff; Son, Yeongkwon; Khlystov, Andrey. 2018. "Aldehydes in Exhaled Breath during E-Cigarette Vaping: Pilot Study Results." Toxics 6, no. 3: 46.