Abstract
We have identified and imaged oxygen-centered free radicals with low-frequency electron paramagnetic resonance (EPR) spectroscopy and deuterium-containing spin traps to probe the feasibility of spin trapping deep in large (∼10 cm), heterogeneous aqueous/hydrophobic (e.g., biologic) systems. Spectra at 250 MHz from spin trapping superoxide and hydroxyl radicals in aqueous solutions of deuterated analogs of DMPO (5,5-dimethyl-1-pyrroline-1-oxyl) were obtained, and the superoxide measurements were compared with those at X-band
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