A novel method to quantify the emission and conversion of VOCs in the smoking of electronic cigarettes

Title
A novel method to quantify the emission and conversion of VOCs in the smoking of electronic cigarettes
Authors
김기현
Keywords
VOLATILE ORGANIC-COMPOUNDS; ENVIRONMENTAL TOBACCO-SMOKE; GAS-CHROMATOGRAPHY; MASS-SPECTROMETRY; PHASE; STANDARD; LIQUID; AIR; CARTRIDGES; NICOTINE
Issue Date
2015-11
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 5, NO 16383, Page. 1-9
Abstract
An analytical technique was developed for the quantitation of volatile organic compounds (VOC) in three different forms of electronic cigarette (EC): solution, vapor, and aerosol. Through the application of the mass change tracking (MCT) approach, the consumed amount of the solution was measured to track the conversion of targets between the different phases. The concentration of aerosol plus vapor (AV) decreased exponentially (559 to 129 g m(-3)) with increasing puff velocity (0.05 to 1 L min(-1)). A strong correlation existed between sampling volume and consumed solution mass (R-2 = 0.9972 +/- 0.0021 (n = 4)). In the EC solution, acetic acid was considerably high (25.8 mu g mL(-1)), along with trace quantities of some VOCs (methyl ethyl ketone, toluene, propionic acid, and i-butyric acid: 0.24 +/- 0.15 mu g mL(-1) (n = 4)). In the aerosol samples, many VOCs (n-butyraldehyde, n-butyl acetate, benzene, xylene, styrene, n-valeric acid, and n-hexanoic acid) were newly produced (138 +/- 250 mu g m(-3)). In general, the solution-to-aerosol (S/A) conversion was significant: e.g., 1,540% for i-butyric acid. The emission rates of all targets computed based on their mass in aerosol/consumed solution (ng mL(-1)) were from 30.1 (p-xylene) to 398 (methyl ethyl ketone), while those of carboxyls were much higher from 166 (acetic acid) to 5,850 (i-butyric acid).
URI
https://www.nature.com/articles/srep16383http://hdl.handle.net/20.500.11754/29159
ISSN
2045-2322
DOI
http://dx.doi.org/10.1038/srep16383
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ETC
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