TY - JOUR
T1 - Esr spin trapping evidence for SO.-3 and .OH radicals in sulfite oxidation
AU - Shi, Xianglin
AU - Dalal, N. S.
PY - 1990/6
Y1 - 1990/6
N2 - Electron spin resonanee (ESR) spin trapping experimenss have been carried out to investigate the mechanism of sulfite oxidation employing 5,5-dimethyl-1-pyrroine-1-oxide (DMPO) as a spin trap. The results show that sulfite autoxidation, catalyzed by Mn(II), involves not only the SO.-3 radicals but also the .OH radicals. An addition of H2O2 to the sulfite aqueous medium significantly increases the .OH radical formation. This result provides new clues to the chemical mechanism of the sulfite oxidation and the sulfite toxicity.
AB - Electron spin resonanee (ESR) spin trapping experimenss have been carried out to investigate the mechanism of sulfite oxidation employing 5,5-dimethyl-1-pyrroine-1-oxide (DMPO) as a spin trap. The results show that sulfite autoxidation, catalyzed by Mn(II), involves not only the SO.-3 radicals but also the .OH radicals. An addition of H2O2 to the sulfite aqueous medium significantly increases the .OH radical formation. This result provides new clues to the chemical mechanism of the sulfite oxidation and the sulfite toxicity.
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U2 - 10.1163/156856790X00166
DO - 10.1163/156856790X00166
M3 - Article
AN - SCOPUS:0344358344
SN - 0922-6168
VL - 13
SP - 103
EP - 115
JO - Research on Chemical Intermediates
JF - Research on Chemical Intermediates
IS - 2
ER -