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Published on: February 12, 2015
Multi-year Study of PAHs in Mainstream Cigarette Smoke.
Bryan A Hearn1, Yan S Ding1, Clifford H Watson1
1Bryan A. Hearn, Research Chemist, National Center for Environmental Health, US Centers for Disease Control and Prevention, Atlanta, GA. Yan S. Ding, Health Scientist, National Center for Environmental Health, US Centers for Disease Control and Prevention, Atlanta, GA. Clifford H. Watson, Lead Research Chemist, National Center for Environmental Health, US Centers for Disease Control and Prevention, Atlanta, GA. Tricia L. Johnson, Chemist, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, MD. Getie Zewdie, Mathematical Statistician, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, MD. Jeannie H. Jeong-Im, Review Chemist, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, MD. Matthew J. Walters, Deputy Division Director, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, MD. Matthew R. Holman, Director, Office of Science, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, MD. C. George Rochester, Chief Statistician, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, MD.
Polycyclic aromatic hydrocarbons (PAHs) in cigarette smoke show strong correlations over time, suggesting a smaller group of PAHs can predict others. These findings may simplify future PAH measurement studies.
Area of Science:
- Environmental Chemistry
- Analytical Chemistry
- Tobacco Science
Background:
- Polycyclic aromatic hydrocarbons (PAHs) are a group of chemicals found in tobacco smoke.
- Understanding PAH levels in mainstream cigarette smoke is crucial for public health assessments.
- Previous studies have investigated PAH content, but long-term correlations require further analysis.
Purpose of the Study:
- To correlate mainstream cigarette smoke deliveries of individual PAHs over multiple years.
- To compare average overall PAH deliveries based on study year, mentholation, ring size, and manufacturer.
Main Methods:
- Quantified 14 PAHs in mainstream smoke from US cigarettes (2002-2011) using GC/MS.
- Measured PAH emissions under International Organization for Standardization (ISO) smoking conditions.
- Employed Pearson product-moment correlation to analyze multi-year PAH relationships.
Main Results:
- Significant statistical correlations were observed among several PAH analytes.
- Overall average mainstream smoke PAH deliveries remained consistent across study years.
- Mentholated and non-mentholated cigarettes exhibited similar average PAH delivery levels.
Conclusions:
- Strong, consistent correlations between PAHs over multiple years indicate predictability.
- A reduced panel of PAH analytes could be sufficient for future mainstream smoke studies.
- These findings can inform more efficient study designs for PAH monitoring in cigarette smoke.
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