Nicotine and Carbonyl Emissions From Popular Electronic Cigarette Products: Correlation to Liquid Composition and Design Characteristics

Introduction:
This text presents the findings of a study that analyzed the chemical composition and emissions of 27 electronic cigarette (ECIG) products from 10 popular brands. The study aimed to determine the power output, e-liquid characteristics, and emissions of nicotine and carbonyls in these products. The results showed wide variability in power and e-liquid chemical characteristics, which affected the emissions of nicotine and carbonyls.

Key Points:

* The study analyzed 27 ECIG products from 10 popular brands.
* The power output of the ECIGs ranged from 2.18 to 6.96 W.
* The e-liquid solvent distribution of PG/VG covered a range of 0/100 to 80/20.
* The water content in the e-liquids covered a range of 0.6% to 35%.
* The total nicotine concentration in the e-liquids ranged from 7.11 to 20.90 mg/mL.
* The ph of the e-liquid aqueous extract covered a range of 5.35 to 9.26.
* The aerosol nicotine yield ranged from 0.27 to 2.91 mg/15 puffs.
* The sum of gaseous carbonyl (C1-C3) yield from a 15-puff session of the ECIGs ranged from 3.06 to 48.85 µg/15 puffs.

Main Message:
The study shows that ECIGs are not a single product but a diverse product category with wide variations in power and e-liquid characteristics. These variations affect the emissions of nicotine and carbonyls, which can have implications for toxicant exposure, subjective effects, and potential utility as a smoking cessation aid. Clinical investigations and observational studies of ECIG use must account for this diversity to provide accurate and meaningful results. additionally, the study highlights the need for regulations to ensure the safety and quality of ECIG products.

EL-hellani, ahmad, Rola Salman, Rachel El-hage, Soha Talih, Nathalie Malek, Rima Baalbaki, Nareg Karaoghlanian, Rima Nakkash, alan Shihadeh, and Najat a. Saliba. “Nicotine and Carbonyl Emissions From Popular Electronic Cigarette Products: Correlation to Liquid Composition and Design Characteristics.” Nicotine & Tobacco Research, October 7, 2016, ntw280. https://doi.org/10.1093/ntr/ntw280.