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  1. Tobacco Science & Research

Reduction in Carbonyl Yields from Sheet-Wrapped Cigars by Charcoal Filtration

Reduction in Carbonyl Yields from Sheet-Wrapped Cigars by Charcoal Filtration

Principal Investigators: Clifford Watson and Julie Morabito

Funding Mechanism:  Interagency Agreement (Non-PATH)

ID number:  224-11-9022

Award Date: 5/23/2017

Institution:  Centers for Disease Control and Prevention


Carbonyl compounds, including formaldehyde, acetaldehyde, and acrolein, are harmful and potentially harmful constituents (HPHCs) present in the gas and particulate phases of the mainstream smoke of combusted tobacco products. Carbon-based materials like charcoal, which have a large surface area and are porous, have been incorporated into cigarette filters to capture HPHCs, including carbonyls, from mainstream cigarette smoke with varying degrees of effectiveness. However, more information about charcoal filtration in sheet-wrapped cigars would be useful. The goal of this project is to evaluate the effect of charcoal filtration on carbonyl reduction in the mainstream smoke of sheet-wrapped cigars. Researchers will modify currently marketed sheet-wrapped cigars with an adapted filter design that incorporates charcoal into the filter at varying quantities, and will measure carbonyl levels in the resulting mainstream smoke. Study findings may inform the development of technologies that could reduce levels of carbonyl and other HPHCs in the smoke of sheet-wrapped cigars.