The Impact of Device Settings, Use Patterns, and Flavorings on Carbonyl Emissions from Electronic Ci
Friday, August 14, 2020
Posted by: Natalia Gromov
Son Y, Weisel C, Wackowski
O, Schwander S, Delnevo C, Meng Q.
The Impact of Device
Settings, Use Patterns, and Flavorings on Carbonyl Emissions from Electronic
Cigarettes.
Int J Environ Res Public Health. 2020;17(16):E5650. Published 2020 Aug 5.
doi:10.3390/ijerph17165650
Health impacts of electronic cigarette (e-cigarette) vaping are associated with
the harmful chemicals emitted from e-cigarettes such as carbonyls. However, the
levels of various carbonyl compounds under real-world vaping conditions have been
understudied. This study evaluated the levels of carbonyl compounds (e.g.,
formaldehyde, acetaldehyde, glyoxal, and diacetyl, etc.) under various device
settings (i.e., power output), vaping topographies, and e-liquid compositions
(i.e., base liquid, flavor types). The results showed that e-vapor carbonyl
levels were the highest under higher power outputs. The propylene glycol
(PG)-based e-liquids generated higher formaldehyde and acetaldehyde than
vegetable glycerin (VG)-based e-liquids. In addition, fruit flavored e-liquids
(i.e., strawberry and dragon fruit) generated higher formaldehyde emissions
than mint/menthol and creamy/sweet flavored e-liquids. While single-top coils
formed 3.5-fold more formaldehyde per puff than conventional cigarette smoking,
bottom coils generated 10-10,000 times less formaldehyde per puff. In general,
increases in puff volume and longer puff durations generated significantly
higher amounts of formaldehyde. While e-cigarettes emitted much lower levels of
carbonyl compounds compared to conventional cigarettes, the presence of several
toxic carbonyl compounds in e-cigarette vapor may still pose potential health
risks for users without smoking history, including youth. Therefore, the public
health administrations need to consider the vaping conditions which generated
higher carbonyls, such as higher power output with PG e-liquid, when developing
e-cigarette product standards.
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