Carbon Monoxide Concentration in Mainstream E-cigarette Emissions Measured with Diode Laser Spectros
Thursday, November 19, 2020
Posted by: Natalia Gromov
Casebolt
R, Cook SJ, Islas A, et al
Carbon Monoxide
Concentration in Mainstream E-cigarette Emissions Measured with Diode Laser
Spectroscopy.
Tobacco Control 2020;29:652-655.
The e-fluid heated in electronic cigarettes (e-cigarettes) is largely composed
of organic compounds, specifically propylene glycol, vegetable glycerin and
flavouring compounds. When heated, as it is in an e-cigarette, the chemical
species in this fluid have the potential to oxidise into carbon monoxide (CO)
and other species. Using diode laser spectroscopy, the concentration of CO in
e-cigarette mainstream effluent as a function of e-cigarette power and flavour
was measured. Carbon monoxide concentration was found to be a direct function
of the power of the resistive heating. At the highest powers testable using
commercial e-cigarette components, the maximum CO concentration measured was
over 180 ppm. The flavouring compounds in the e-fluid also had an effect on the
concentration of carbon monoxide present in the effluent.
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