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EPR study of superoxide radicals from potassium superoxide

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Laura Bolojan, István Mihály Takács, Vasile Miclaus and Grigore Damian

Editorial: Springer, Applied Magnetic Resonance, 42( 3), p.333-341, 2012.


Electron Paramagnetic Resonance (EPR) spectroscopy and the spin trapping technique were
employed in order to monitor the superoxide radical liberated from potassium superoxide in aqueous alkaline
solutions; DEPMPO (5-diethoxyphosphoryl-5-methyl- 1-pyrroline-N-oxide) was used as a trapping agent. Three
reaction systems were prepared, varying the ratios between KO2, superoxide and DEPMPO. The data indicate
distinct mechanisms leading to DEPMPO/spin adducts with different kinetic rates.

Cuvinte cheie: EPR spectroscopy, Potassium Superoxide, DEPMPO spin trap