Exposure assessment to e-cigarettes part 2: A pilot laboratory study on formation of volatile carbonyls from propylene glycol – a major e-cigarette carrier solvent

Wenhao Chen, Ping Wang, Jeff Fowles, Toshiki Matsuo, Dennis Shusterman, Alfred T. Hodgson, Kazuhide Ito, Kazukiyo Kumagai

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Electronic cigarettes are combustion-less battery-powered devices that are able to vaporize a liquid solution. An e-cigarette usually has a heating element, and uses propylene glycol, glycerin or a mixture of the two as a carrier solvent. In this paper, we report a pilot laboratory study investigating the effect of heating temperature on the formation of carbonyls from propylene glycol. We vaporized pure propylene glycol on petri-dish in stainless steel micro-chambers at controlled temperatures of 150, 200 and 250 ºC, respectively, and collected volatile carbonyls at the chamber outlet. We observed the formation of formaldehyde, acetaldehyde and propionaldehyde at these elevated temperatures. There was a general trend for an exponential increase of these carbonyls with increasing temperature. At 250 ºC, there were clear concentration elevations in all three carbonyls. Additional tests on more carrier solvents using a tubular reactor are ongoing to cover broader temperatures and to better mimic e-cigarette flow pattern.

Original languageEnglish
Pages460-463
Number of pages4
Publication statusPublished - Jan 1 2015
EventHealthy Buildings 2015 America Conference: Innovation in a Time of Energy Uncertainty and Climate Adaptation, HB 2015 - Boulder, United States
Duration: Jul 19 2015Jul 22 2015

Other

OtherHealthy Buildings 2015 America Conference: Innovation in a Time of Energy Uncertainty and Climate Adaptation, HB 2015
CountryUnited States
CityBoulder
Period7/19/157/22/15

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

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  • Cite this

    Chen, W., Wang, P., Fowles, J., Matsuo, T., Shusterman, D., Hodgson, A. T., Ito, K., & Kumagai, K. (2015). Exposure assessment to e-cigarettes part 2: A pilot laboratory study on formation of volatile carbonyls from propylene glycol – a major e-cigarette carrier solvent. 460-463. Paper presented at Healthy Buildings 2015 America Conference: Innovation in a Time of Energy Uncertainty and Climate Adaptation, HB 2015, Boulder, United States.