Abstract
Shown for the first time is the contribution of carbon into each smoke phase from each ingredient in the 1R1-type cigarette. In many cases, the actual percentage contribution is greatly different from the theoretical contribution assumed correct for many years. The bright lamina is a larger carbon contributor to mainstream total particulate matter (MS-TPM) than expected and the bright stem contributes considerably less. These data imply that Burley tobacco contributes more than the expected amounts of carbon to those smoke components which are more easily condensable, as compared to bright tobacco, which contributes more than expected to the non-volatile particulate phase and less to the condensable phase. The cigarette paper was shown to contribute a disproportionate share of carbon to the side-stream total particulate matter (SS-TPM). Glycerol was shown to contribute heavily to the MS-TPM, in keeping with what would be expected for distillable materials.