Influence of machine-based puffing parameters on aerosol and smoke yields from contemporary nicotine inhalation products
A study was conducted to investigate the effect that changing the puffing parameters used to generate an aerosol from an electronic cigarette had on the mass of aerosol collected as well as the yields of the major chemical constituents of the aerosol; propylene glycol (PG), glycerol, nicotine and water.
The study examined a range of puff volumes and durations, as well as investigating the effect of the puff profile, using two puff actuated electronic cigarettes – one disposable and one rechargeable.
The results of this study were compared with previous studies looking at the effect of puffing parameters on the mass of aerosol delivered by commercial cigarettes (CCs) and an electrically controlled Tobacco Heating Product (THP).
For the e-cigarettes tested, there was no significant difference in aerosol mass and major constituents between 3s rectangular and bell-shaped puff profiles. Whilst puff volume did not significantly affect the mass of aerosol from e-cigarettes or the THP, puff duration did. For the THP, puff frequency also had an effect on total aerosol mass. By contrast, for CCs, both puff volume and puff frequency significantly influenced smoke yields whilst puff duration did not.
Puffing parameters have wide-ranging effects on smoke and aerosol yields that differ depending on the product and which correlate with the individual heating mechanisms of different devices. In combination with a growing body of information on how consumers use these new nicotine and tobacco products, this knowledge can help to design more appropriate standardised testing procedures.