Role of the Filters in the Formation and Stabilization of Semiquinone Radicals Collected from Cigarette Smoke.

ABSTRACT: The fractional pyrolysis of Bright tobacco was performed in nitrogen atmosphere over the temperature range of 240 - 510 °C in a specially constructed, high temperature flow reactor system. Electron paramagnetic resonance (EPR) spectroscopy was used to analyze the free radicals in the initially produced total particular matter (TPM) and in TPM after exposure to ambient air (aging). Different filters have been used to collect TPM from tobacco smoke: cellulosic, cellulose nitrate, cellulose acetate, nylon, Teflon and Cambridge. The collection of the primary radicals (measured immediately after collection of TPM on filters), the formation and stabilization of the secondary radicals (defined as radicals formed during aging of TPM samples on the filters) depend significantly on the material of t

SUBMITTER: Maskos Z 

PROVIDER: S-EPMC3831374 | biostudies-literature | 2013 Sep

REPOSITORIES: biostudies-literature