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Related Experiment Video

Updated: May 21, 2026

Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System
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Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System

Published on: May 24, 2017

Does e-cigarette consumption cause passive vaping?

T Schripp1, D Markewitz, E Uhde

  • 1Department Material Analysis and Indoor Chemistry, Fraunhofer Wilhelm-Klauditz-Institut (WKI), Braunschweig, Germany. tobias.schripp@wki.fraunhofer.de

Indoor Air
|June 8, 2012
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Summary

Electronic cigarette use releases harmful volatile organic compounds (VOC) and ultrafine particles (UFP), creating a new indoor air quality concern. This study confirms

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Area of Science:

  • Environmental Chemistry
  • Aerosol Science
  • Public Health

Background:

  • Electronic cigarettes (e-cigarettes) are marketed as safer alternatives to conventional smoking.
  • E-cigarette aerosol contains carrier liquids, flavors, and potentially nicotine, vaporized for inhalation.

Purpose of the Study:

  • To quantify volatile organic compounds (VOC) and ultrafine particles (UFP) released from e-cigarettes.
  • To analyze the composition of inhaled e-cigarette aerosol under realistic conditions.

Main Methods:

  • E-cigarette emissions were measured in an 8-m³ test chamber simulating indoor environments.
  • Analysis of inhaled aerosol composition was conducted in smaller chambers.

Main Results:

  • E-cigarette use significantly increased FP/UFP and VOC levels.
  • Key gas-phase components identified include 1,2-propanediol, 1,2,3-propanetriol, diacetin, flavorings, and nicotine traces.
  • Inhaled aerosol undergoes lung-specific changes, likely due to deposition and evaporation.

Conclusions:

  • E-cigarette consumption introduces a novel source of chemical and aerosol exposure indoors.
  • Findings indicate a potential for 'passive vaping' and necessitate further research on indoor air quality impacts.