I found this study published about the toxic chemicals produced when heating the solvents propylene glycol (PG) and glycerol (GLY) I thought the crew might be interested in reading.
Some quotes that caught my attention:
“The chemical literature strongly suggests that there should be more compounds produced by PG and GLY than have been reported in e-cigarette aerosols to date.”
“In addition, the results herein suggest NMR as a viable alternative to DNPH trapping cartridges for monitoring challenging, reactive toxins such as acrolein.”
Solvent Chemistry in the Electronic Cigarette Reaction Vessel