A framework to investigate the impact of topography and product characteristics on electronic cigarette emissions

This study proposes aframework consisting ofthree component terms: HPHC mass concentration, HPHC mass ratio and total particulate mass (TPM) concentration. The framework informs experiments toinvestigate dependence ofaerosol emissions from five electronic cigarettes spanning several design generations and three e-liquids for six repeated trials ateach often flow conditions. Results are reported for TPM concentration as afunction offlow conditions spanning the range ofnatural environmenttopography observed inprior studies. An empirical correlation describing TPM concentration as afunction offlow conditions and coil power setting (6, 7.5 and 10 watts) for the Innokin iTaste MVP 2.0 vaporizer with Innokin iClear 30 dual coil tank ispresented. Additional results document the impact offlow conditions and wick and coil design on TPM concentration through comparison ofthe Innokin iClear 30 (upper coil, capillary action wick) and the Innokin iClear X.I (lower coil, gravity fed wick) operated at7.5 watts. The impact ofe-liquid on TPM concentration isillustrated by comparing emissions from an NJOY Vape Pen filled with AVAIL Arctic Blast, Tobacco Row, and Mardi Gras e-liquids. TPM concentration isshown todepend upon flow conditions across arange of e-cigarette product designs including cig-a-like, pen-style, box-mod and emergent disposable-cartridge style devices.

Robinson, Risa J., Nathan C. Eddingsaas, A. Gary DiFrancesco, Shehan Jayasekera, and Edward C. Hensel. “A Framework to Investigate the Impact of Topography and Product Characteristics on Electronic Cigarette Emissions.” Edited by Vladimir Mikheev. PLOS ONE 13, no. 11 (November 5, 2018): e0206341. https://doi.org/10.1371/journal.pone.0206341.