Ratio of Propylene Glycol to Glycerol in E-Cigarette Reservoirs is Unchanged by Vaping As Determined by H NMR Spectroscopy

Authors

Paul J. Kerber, Portland State UniversityFollow
Anna K. Duell, Portland State University
David H. Peyton, Portland State UniversityFollow

Published In

Chemical Research in Toxicology

Document Type

Citation

Publication Date

8-4-2021

Abstract

E-cigarette liquids (e-liquids) contain propylene glycol (PG) and/or glycerol (GL) to deliver flavorants/nicotine. It has recently been suggested that the PG:GL ratio in e-cigarette reservoirs changes during vaping, leaving almost entirely GL after aerosolizing much of a 30:70 PG:GL mixture. To evaluate this directly, we analyzed e-liquids from e-cigarettes before and after aerosolization using 4 different coils, and aerosol samples generated using high and low e-liquid levels. The PG:GL ratios of initial and final e-liquids and aerosol samples were comparable. This is important because a large change in e-liquid composition could substantially alter the aerosol profile during a vaping session.

Rights

Copyright © 2021 American Chemical Society

Locate the Document

https://doi.org/10.1021/acs.chemrestox.1c00208

DOI

10.1021/acs.chemrestox.1c00208

Persistent Identifier

https://archives.pdx.edu/ds/psu/36271

Citation Details

Kerber, P. J., Duell, A. K., & Peyton, D. H. (2021). Ratio of Propylene Glycol to Glycerol in E-Cigarette Reservoirs Is Unchanged by Vaping As Determined by ¹ H NMR Spectroscopy. Chemical Research in Toxicology, acs.chemrestox.1c00208. https://doi.org/10.1021/acs.chemrestox.1c00208