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Nicotine Tob Res. 2014 Jun;16(6):655-62. doi: 10.1093/ntr/ntt203. Epub 2013 Dec 11.

Secondhand exposure to vapors from electronic cigarettes.

Author information

1
Department of General and Analytical Chemistry, School of Pharmacy and Laboratory Medicine, Medical University of Silesia, Sosnowiec, Poland;

Abstract

INTRODUCTION:

Electronic cigarettes (e-cigarettes) are designed to generate inhalable nicotine aerosol (vapor). When an e-cigarette user takes a puff, the nicotine solution is heated and the vapor is taken into lungs. Although no sidestream vapor is generated between puffs, some of the mainstream vapor is exhaled by e-cigarette user. The aim of this study was to evaluate the secondhand exposure to nicotine and other tobacco-related toxicants from e-cigarettes.

MATERIALS AND METHODS:

We measured selected airborne markers of secondhand exposure: nicotine, aerosol particles (PM(2.5)), carbon monoxide, and volatile organic compounds (VOCs) in an exposure chamber. We generated e-cigarette vapor from 3 various brands of e-cigarette using a smoking machine and controlled exposure conditions. We also compared secondhand exposure with e-cigarette vapor and tobacco smoke generated by 5 dual users.

RESULTS:

The study showed that e-cigarettes are a source of secondhand exposure to nicotine but not to combustion toxicants. The air concentrations of nicotine emitted by various brands of e-cigarettes ranged from 0.82 to 6.23 µg/m(3). The average concentration of nicotine resulting from smoking tobacco cigarettes was 10 times higher than from e-cigarettes (31.60±6.91 vs. 3.32±2.49 µg/m(3), respectively; p = .0081).

CONCLUSIONS:

Using an e-cigarette in indoor environments may involuntarily expose nonusers to nicotine but not to toxic tobacco-specific combustion products. More research is needed to evaluate health consequences of secondhand exposure to nicotine, especially among vulnerable populations, including children, pregnant women, and people with cardiovascular conditions.

PMID:
24336346
PMCID:
PMC4565991
DOI:
10.1093/ntr/ntt203
[Indexed for MEDLINE]
Free PMC Article

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