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dc.contributor.author
Cancelada, Lucia
dc.contributor.author
Tang, Xiaochen
dc.contributor.author
Russell, Marion L.
dc.contributor.author
Maddalena, Randy L.
dc.contributor.author
Litter, Marta Irene
dc.contributor.author
Gundel, Lara A.
dc.contributor.author
Destaillats, Hugo
dc.date.available
2022-10-21T10:39:56Z
dc.date.issued
2021-06
dc.identifier.citation
Cancelada, Lucia; Tang, Xiaochen; Russell, Marion L.; Maddalena, Randy L.; Litter, Marta Irene; et al.; Volatile aldehyde emissions from “sub-ohm” vaping devices; Academic Press Inc Elsevier Science; Environmental Research; 197; 6-2021; 1-12
dc.identifier.issn
0013-9351
dc.identifier.uri
http://hdl.handle.net/11336/174280
dc.description.abstract
“Sub-ohm” atomizers with reduced resistance can deliver more power than conventional electronic cigarettes. Typical battery outputs are 100 W or more. These devices are particularly popular among young users, and can be a significant source of volatile carbonyls in the indoor environment. Emissions from next-generation sub-ohm vaping products were characterized by determining e-liquid consumption and volatile aldehydes emissions for several combinations of popular high-power configurations. Tests explored the effect of dilution air flow (air vent opening), puffing volume, and coil assembly configuration. The mass of liquid consumed per puff increased as the puff volume increased from 50 to 100 mL, then remained relatively constant for larger puff volumes up to 500 mL. This is likely due to mass transfer limitations at the wick and coil assembly, which reduced the vaporization rate at higher puff volumes. Carbonyl emission rates were systematically evaluated using a 0.15 Ω dual coil atomizer as a function of the puffing volume and dilution air flow, adjusted by setting the air vents to either 100% (fully open), 50%, 25%, or 0% (closed). The highest formaldehyde emissions were observed for the lowest puff volume (50 mL) when the vents were closed (48 ng mg−1), opened at 25% (39 ng mg−1) and at 50% (32 ng mg−1). By contrast, 50-mL puffs with 100% open vents, and puff volumes >100 mL for any vent aperture, generated formaldehyde yields of 20 ng mg−1 or lower, suggesting that a significant cooling effect resulted in limited carbonyl formation. Considering the effect of the coil resistance when operated at a voltage of 3.8 V, the amount of liquid evaporated per puff decreased as the resistance increased, in the order of 0.15 Ω > 0.25 Ω > 0.6 Ω, consistent with decreasing aerosol temperatures measured at the mouthpiece. Three different configurations of 0.15 Ω coils (dual, quadruple and octuple) were evaluated, observing significant variability. No clear trend was found between carbonyl emission rates and coil resistance or configuration, with highest emissions corresponding to a 0.25 Ω dual coil atomizer. Carbonyl emission rates were compared with those determined using the same methodology for conventional e-cigarettes (lower power tank systems), observing overall lower yields for the sub-ohm devices.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Inc Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AEROSOLS
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CARBONYLS
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E-CIGARETTES
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FORMALDEHYDE
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MODS
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SUB-OHM
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Volatile aldehyde emissions from “sub-ohm” vaping devices
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-20T11:06:36Z
dc.journal.volume
197
dc.journal.pagination
1-12
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Cancelada, Lucia. Comisión Nacional de Energía Atómica; Argentina. Lawrence Berkeley National Laboratory; Estados Unidos
dc.description.fil
Fil: Tang, Xiaochen. Lawrence Berkeley National Laboratory; Estados Unidos
dc.description.fil
Fil: Russell, Marion L.. Lawrence Berkeley National Laboratory; Estados Unidos
dc.description.fil
Fil: Maddalena, Randy L.. Lawrence Berkeley National Laboratory; Estados Unidos
dc.description.fil
Fil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigación e Ingeniería Ambiental; Argentina
dc.description.fil
Fil: Gundel, Lara A.. Lawrence Berkeley National Laboratory; Estados Unidos
dc.description.fil
Fil: Destaillats, Hugo. Lawrence Berkeley National Laboratory; Estados Unidos
dc.journal.title
Environmental Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.envres.2021.111188
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0013935121004825
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