Characteristics and composition of mainstream smoke from 10 RYO tobacco brands sold in Spain: effects of additives capable of reducing the evolution of carbon monoxide, nicotine, and TPM
In this study, 10 commercial roll-your-own (RYO) tobacco brands that together represent 40% of this market in Spain were smoked under ISO conditions. The 3R4F reference cigarette tobacco was also smoked for comparison. The mainstream smoke was analyzed to study the main components of the gas; the particulate matter was collected on the filters and on Cambridge filter pads (CFP), and the three fractions were then analyzed and grouped into several chemical families. Two types of tubes were used; the first had no ventilation holes and was used with all the commercial brands, and the second one, with ventilation holes, was used with two commercial brands and with the 3R4F reference tobacco in order to determine the diluting effect of the holes. The results were compared with those obtained in a previous study where 10 brands of commercial Spanish cigarettes were studied. The results show that RYO brands provide larger yields of nicotine, TPM, and carbon monoxide than do the commercial brands of cigarettes. The addition to the tobacco of materials of siliceous or carbonaceous origin with a highly developed meso- and macro-porous structure has shown to be very effective (as was the case when studying the conventional cigarettes) in reducing the amount of almost all individual compounds and chemical families considered, including carbon monoxide, nicotine, and tar evolved from smoking such mixtures.
Acknowledgements - Financial support for this investigation has been provided by the Spanish “Comisión de Investigación Cientifica y Technológica” of the “Ministerio de Ciencia e Innoación” and the European Community (FEDER refunds) (CTQ2008-01023/PPQ and MAT2011-24991), and PROMETEO/2012/015.