Abstract
The constituents (liquid, nicotine&flavours) of e-cigs are vaporized and thus particles are generated. Only passive inhalation of e-cig vapour has been studied.
METHODS
We studied direct particle emission of 7 e-cigs liquids
TABLE 1: e-cigs liquid compositions studied
using a Scanning Mobility Particle Sizer in order to determine the number and size of particles inhaled by e-cigs users.
RESULTS
e-cigs emit 106 -107 particles with a size distribution peaked at 10-20nm & 100-500nm (Figure1) and a median diameter of 200-400nm (Figure2).
Particle size and number are shown in Tab1.
CONCLUSIONS
e-cigs liquids generate nano-particles (300-3000 more than ambient air) that could be inhaled.
Their composition has little or no impact on the distribution, size and number of emitted nano-particles.
- © 2014 ERS
