Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 89, ST15, ISSN.0525-6240
Evaluation of sidestream cigarette smoke generated under different conditions of temperature and humidity
Philip Morris USA, Richmond, VA, USA
A chamber system for the generation, collection and analysis of sidestream cigarette smoke under controlled temperature and humidity conditions is described. Components of the system include a closed, leak-proof, insulated, stainless steel-lined room of 19.1 cubic meters volume, a computer controlled HVAC system that maintains temperature and humidity conditions inside the chamber within the range of 55.degree.F/10%RH to 100.degree.F/80%RH and PC operated sampling and data collection systems. In this study, the levels of selected components of sidestream cigarette smoke were determined under different conditions of temperature and humidity. An automatic smoking machine was used to generate smoke from thirty cigarettes inside the chamber which had been previously equilibrated at three set point conditions : 100.degree.F/20%RH, 72.degree.F/60%RH and 55.degree.F/80%RH. On-line analyzers were used to measure sidestream carbon dioxide, carbon monoxide, nitric oxide and opacity (an optical measurement related to smoke concentration). In addition, on-line analyses of mainstream carbon dioxide and carbon monoxide were made. Whole sidestream smoke was collected inside the chamber for subsequent nicotine, ammonia and aldehyde analyses following the completion of the chamber runs. Results showing differences in several smoke components collected at the different conditions will be presented. A comparison of two methods of collecting the sidestream smoke for aldehyde analysis will be summarized. The chamber system's capabilities and sample collection protocols will be described.