Electron Paramagnetic Resonance spectroscopy (EPR) coupled with spin trapping methodology has been used to study the formation of free radicals in mainstream cigarette smoke. Kentucky reference cigarettes (2R4F) were smoked using a 20-port smok­ ing machine (Borgwaldt-kc) under ISO smoking conditions. Free radicals in both particulate phase and gas phase smoke were analysed. Short-lived Cand O-...

The reaction of CH3O2 radicals with acetaldehyde on the solid surface of NH4NO3 has been studied in a flow capillary reactor at low pressure and room temperature. The experiments were performed using EPR spectrometer combined with the kinetic method of radicals freezing. Peroxy radicals revealed an oscillation complex behavior during the process regarding to the phenomenon of radicals multiplic...