Summary
Introduction:
This text provides an analysis of the JUUL electronic cigarette (e-cigarette), which has gained significant popularity in the US market. The study focuses on the characteristics and toxicant emissions of JUUL e-cigarettes, comparing them with other e-cigarettes and combustible cigarettes. The research aims to provide insights into the potential health impacts of JUUL e-cigarette use.
Key Points:
* JUUL e-cigarettes contain a high concentration of nicotine salt, with a liquid nicotine concentration of 69mg/mL.
* The liquid and aerosol PG/VG ratio of JUUL e-cigarettes is 30/70.
* JUUL e-cigarettes emit 2.05 (0.08) mg of nicotine in 15 puffs, overwhelmingly in the protonated form.
* Carbonyl yields of JUUL e-cigarettes are significantly lower than those reported for combustible cigarettes but similar to other closed-system e-cigarette devices.
* The heating coil resistance of JUUL e-cigarettes is 1.6 (0.66) Ohm, while the maximum power delivered is 8.1 W.
* The control circuit of JUUL e-cigarettes limits the peak operating temperature to approximately 215°C.
* JUUL e-cigarettes emit a high-nicotine concentration aerosol predominantly in the protonated form, with lower nicotine-normalised formaldehyde and total aldehyde yields than other e-cigarettes and combustible cigarettes.
Main Message:
The study highlights that JUUL e-cigarettes emit a high-nicotine concentration aerosol predominantly in the protonated form, which may contribute to their popularity among adolescents. however, the device's nicotine emissions may also contribute to continued use and eventual dependence. While JUUL e-cigarettes have lower carbonyl yields than combustible cigarettes, they still emit harmful chemicals. Therefore, further research is necessary to assess the potential health impacts of JUUL e-cigarette use.
Citation
Talih S, Salman R, El-hage R, et al. Characteristics and toxicant emissions of JUUL electronic cigarettes. Tobacco control. 2019;28(6):678-680. doi:10.1136/tobaccocontrol-2018-054616
