Document Detail


Constituents in tobacco and smoke emissions from Canadian cigarettes.
MedLine Citation:
PMID:  18768456     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: There is relatively little information available about the chemical constituents of tobacco and individual toxic emissions from cigarettes and other tobacco products. OBJECTIVE: To characterise 21 constituents in whole tobacco and 41 constituents in the smoke emissions of Canadian cigarettes, as well as to compare differences between domestic and imported brands. METHODS: All data were released as part of Canada's Tobacco Reporting Regulations. Data are reported for 247 brands tested in 2004. RESULTS: The results indicate significant differences in the constituent levels of domestic and imported cigarette tobacco. Levels of ammonia compounds were significantly higher in imported "US blended" tobacco compared to domestically manufactured brands. Toxic emissions for tobacco-specific nitrosamines were significantly higher for imported cigarettes under both the ISO and Canadian Intense testing methods; however domestic cigarettes had higher levels of other toxic constituents, including benzo[a]pyrene. The findings also highlight the extent to which nicotine, heavy metals and tobacco-specific nitrosamines are "transferred" from the whole tobacco to the smoke. CONCLUSIONS: The findings illustrate important differences between domestically manufactured Virginia flue-cured cigarettes and imported US blended cigarettes. Although the findings suggest that domestic cigarettes had lower levels of constituents such as ammonia, which are associated with increased "additives", Canadian cigarettes were by no means "additive-free." Overall, these findings provide important benchmarks for making historical and international comparisons across brands on key constituents.
Authors:
D Hammond; R J O'Connor
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Tobacco control     Volume:  17 Suppl 1     ISSN:  1468-3318     ISO Abbreviation:  Tob Control     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-09-04     Completed Date:  2009-02-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9209612     Medline TA:  Tob Control     Country:  England    
Other Details:
Languages:  eng     Pagination:  i24-31     Citation Subset:  IM    
Affiliation:
Department of Health Studies and Gerontology, University of Waterloo, Ontario, Canada. dhammond@uwaterloo.ca
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MeSH Terms
Descriptor/Qualifier:
Alkaloids / analysis
Ammonia / analysis
Canada
Commerce
Consumer Product Safety
Hazardous Substances / analysis*
Hydrogen-Ion Concentration
Materials Testing / methods
Metals / analysis
Nitrosamines / analysis
Smoke / analysis*
Smoking / metabolism*
Tobacco / chemistry*
Grant Support
ID/Acronym/Agency:
C312/A3726//Cancer Research UK; P50 CA111236/CA/NCI NIH HHS; R01 CA 100362/CA/NCI NIH HHS
Chemical
Reg. No./Substance:
0/Alkaloids; 0/Hazardous Substances; 0/Metals; 0/Nitrosamines; 0/Smoke; 7664-41-7/Ammonia

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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