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iQOS: evidence of pyrolysis and release of a toxicant from plastic

Overview of attention for article published in Tobacco Control, March 2018
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (98th percentile)
  • High Attention Score compared to outputs of the same age and source (89th percentile)

Mentioned by

news
11 news outlets
blogs
4 blogs
twitter
46 tweeters
facebook
1 Facebook page
wikipedia
1 Wikipedia page
video
1 video uploader

Citations

dimensions_citation
16 Dimensions

Readers on

mendeley
39 Mendeley
Title
iQOS: evidence of pyrolysis and release of a toxicant from plastic
Published in
Tobacco Control, March 2018
DOI 10.1136/tobaccocontrol-2017-054104
Pubmed ID
Authors

Barbara Davis, Monique Williams, Prue Talbot, Davis, Barbara, Williams, Monique, Talbot, Prue

Abstract

To evaluate performance of the I quit original smoking (iQOS) heat-not-burn system as a function of cleaning and puffing topography, investigate the validity of manufacturer's claims that this device does not burn tobacco and determine if the polymer-film filter is potentially harmful. iQOS performance was evaluated using five running conditions incorporating two different cleaning protocols. Heatsticks were visually and stereomicroscopically inspected preuse and postuse to determine the extent of tobacco plug charring (from pyrolysis) and polymer-film filter melting, and to elucidate the effects of cleaning on charring. Gas chromatography-mass spectrometry headspace analysis was conducted on unused polymer-film filters to determine if potentially toxic chemicals are emitted from the filter during heating. For all testing protocols, pressure drop decreased as puff number increased. Changes in testing protocols did not affect aerosol density. Charring due to pyrolysis (a form of organic matter thermochemical decomposition) was observed in the tobacco plug after use. When the manufacturer's cleaning instructions were followed, both charring of the tobacco plug and melting of the polymer-film filter increased. Headspace analysis of the polymer-film filter revealed the release of formaldehyde cyanohydrin at 90°C, which is well below the maximum temperature reached during normal usage. Device usage limitations may contribute to decreases in interpuff intervals, potentially increasing user's intake of nicotine and other harmful chemicals. This study found that the tobacco plug does char and that charring increases when the device is not cleaned between heatsticks. Release of formaldehyde cyanohydrin is a concern as it is highly toxic at very low concentrations.

Twitter Demographics

The data shown below were collected from the profiles of 46 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 39 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 39 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 11 28%
Unspecified 9 23%
Researcher 5 13%
Student > Bachelor 5 13%
Student > Master 3 8%
Other 6 15%
Readers by discipline Count As %
Unspecified 12 31%
Medicine and Dentistry 6 15%
Chemistry 4 10%
Psychology 4 10%
Agricultural and Biological Sciences 3 8%
Other 10 26%

Attention Score in Context

This research output has an Altmetric Attention Score of 147. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 July 2019.
All research outputs
#95,942
of 13,322,716 outputs
Outputs from Tobacco Control
#76
of 2,315 outputs
Outputs of similar age
#4,685
of 271,528 outputs
Outputs of similar age from Tobacco Control
#2
of 19 outputs
Altmetric has tracked 13,322,716 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,315 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 26.2. This one has done particularly well, scoring higher than 96% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 271,528 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 98% of its contemporaries.
We're also able to compare this research output to 19 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 89% of its contemporaries.