An Infrared Method for the Determination of Carbon Monoxide and Carbon Dioxide Levels in Cigarette Smoke

A method for the simultaneous determination of the CO and CO2 concentrations in each puff of a cigarette was developed. Puff characteristics of single and multiport smoking machines were controlled by selection of critical flow orifices. The CO and CO2 were rapidly measured by nondispersive infra-red analysers, which required no wave length scanning and were free from interference by other smoke components. Precision was increased by a six-port head compared to a single port but was not improved by a 12-port head. The procedure has been applied in studies of various commercial and experimental cigarettes