Show simple item record

dc.contributor.author
Martuzevicius, Dainius
dc.contributor.author
Prasauskas, Tadas
dc.contributor.author
Setyan, Ari
dc.contributor.author
O’Connell, Grant
dc.contributor.author
Cahours, Xavier
dc.contributor.author
Julien, Rémi
dc.contributor.author
Colard, Stéphane
dc.date.accessioned
2019-09-27T12:24:20Z
dc.date.available
2019-09-27T09:57:34Z
dc.date.available
2019-09-27T12:24:20Z
dc.date.issued
2019-10
dc.identifier.issn
1462-2203
dc.identifier.issn
1469-994X
dc.identifier.other
10.1093/ntr/nty121
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/366922
dc.identifier.doi
10.3929/ethz-b-000366922
dc.description.abstract
Introduction There are fundamental differences between electronic cigarettes (e-cigarettes) and conventional cigarette product categories with regards to potential environmental exposures, notably that e-cigarettes do not contain tobacco or generate side-stream emissions. Here we assess the spatial and temporal patterns of exhaled e-cigarette aerosol at a bystander’s position, and compare it with conventional cigarette smoke emissions. Methods Smokers were asked to use e-cigarettes or smoke conventional cigarettes in a room-simulating chamber. Volunteers used the products at different distances from a heated mannequin, representing a bystander, and under different room ventilation rates. Aerosol particle concentrations and size distributions at the bystander’s position were measured. Results For both product categories, the particle concentrations registered following each puff were in the same order of magnitude. However, for e-cigarettes the particle concentration returned rapidly to background values within seconds; for conventional cigarettes it increased with successive puffs, returning to background levels after 30–45 minutes. Unlike for the e-cigarette devices tested, such temporal variation was dependent on the room ventilation rate. Particle size measurements showed that exhaled e-cigarette particles were smaller than those emitted during smoking conventional cigarettes and evaporated almost immediately after exhalation, thus affecting the removal of particles through evaporation rather than displacement by ventilation. Conclusions Significant differences between emissions from the tested e- and conventional cigarettes are reported. Exhaled e-cigarette particles are liquid droplets evaporating rapidly; conventional cigarette smoke particles are far more stable and linger. Implications • Several factors potentially influencing particle behavior after exhalation of e-cigarette aerosols or emitted during smoking conventional cigarettes were studied. • Differences in particle size between those exhaled following use of e-cigarettes and those emitted during smoking of conventional cigarettes were observed. • E-cigarette particle concentrations decreased rapidly following exhalation due to evaporation. • The removal of particles following smoking conventional cigarettes was much slower and was dependent on the room ventilation rate.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Oxford University Press
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Characterization of the Spatial and Temporal Dispersion Differences Between Exhaled E-Cigarette Mist and Cigarette Smoke
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2018-06-19
ethz.journal.title
Nicotine & tobacco research
ethz.journal.volume
21
en_US
ethz.journal.issue
10
en_US
ethz.journal.abbreviated
Nicotine tob. res.
ethz.pages.start
1371
en_US
ethz.pages.end
1377
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Cary, NC
en_US
ethz.publication.status
published
ethz.date.deposited
2019-09-27T09:57:38Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-09-27T12:24:48Z
ethz.rosetta.lastUpdated
2020-02-15T21:48:33Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Characterization%20of%20the%20Spatial%20and%20Temporal%20Dispersion%20Differences%20Between%20Exhaled%20E-Cigarette%20Mist%20and%20Cigarette%20Smoke&rft.jtitle=Nicotine%20&%20tobacco%20research&rft.date=2019-10&rft.volume=21&rft.issue=10&rft.spage=1371&rft.epage=1377&rft.issn=1462-2203&1469-994X&rft.au=Martuzevicius,%20Dainius&Prasauskas,%20Tadas&Setyan,%20Ari&O%E2%80%99Connell,%20Grant&Cahours,%20Xavier&rft.genre=article&rft_id=info:doi/10.1093/ntr/nty121&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record