ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The major end-products formed by fast atom bombardment (FAB) and γ-irradiation of glycerol have been identified using capillary gas chromatography/mass spectrometry. The product distributions differ dramatically. Products resulting from the recombination of either carbon-centered or oxygen-centered radicals are evident for both sources of irradiation. However, the major FAB-generated products are formed by the recombination of carbon-centered [G - H]· radicals with other carbon-centered radicals while the major γ-radiolysis products result from the recombination of oxygen-centered [G-H]· radicals with lower-weight carbon-centered species. γ-Radiolysis of an N2O-saturated aqueous solution of glycerol, experimental conditions that strongly favor the formation of carbon-centered [G - H]· radicals at the expense of the oxygen-centered species, yielded some products that were identical to those produced by FAB of neat glycerol. Finally, the free radicals produced by γ-radiolysis of glycerol were investigated by electron spin resonance spectroscopy and spin trapping with 5,5-dimethyl-1-pyrrolne-TV-oxide. The presence of only the carbon-centered free radical was established by this technique. The implications of these results are discussed.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210220503
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