NDLI: Development of a quantification method for free radicals in cigarette smoke by electron spin resonance

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Development of a quantification method for free radicals in cigarette smoke by electron spin resonance

Content Provider	Semantic Scholar
Author	Ghosh, Mariana V. Cunningham, Fiona McGrath, Conor Baker, Richard R. McAughey, John
Copyright Year	2003
Abstract	INTRODUCTION RESULTS Tobacco smoke is a complex carbon-based, dynamic liquid droplet Analysis of Gas Phase Free Radicals for a set of experimental aerosol, suspended in an equally complex organic vapour mixture. cigarettes Smoke is generated from a combination of combustion (up to The ESR spectra of a 0.01M PBN solution in benzene after contact 950 oC), with pyrolysis and distillation (at less than 600 oC) of plant with the gas phase aerosol of the 2R4F Kentucky cigarettes material (Baker, 1999). It has been shown that tobacco smoke can recorded as a function of time are shown below (Figure 3). The contain high concentrations of free radicals in both particulate and hyperfine coupling constants measured from the spectrum are : vapour phases (Pryor et al, 1983). It has been further claimed that aN=1.47 mT and aH=0.21 mT, with a line-width of 0.09 mT. These the presence of short lived alkoxyl (RO·) and carbon-centered alkyl couplings are indicative of a carbon centred radical. The peaks radicals (R·) in the gas phase may be involved in carcinogenesis marked with the symbol (*) are associated with the oxidised and mutagenesis pathways (Pryor, 1987). product PBNOx.
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Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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