title: Preparation and stabilization of aqueous/ethanolic superoxide solutions.
abstract: Methods for the generation and stabilization of alkaline aqueous and/or ethanolic superoxide solutions have been developed utilizing either high energy ionizing radiation or vacuum-uv photolysis. These solutions can be used for the study of the reactivity of superoxide radical (O-2) and its conjugate acid the perhydroxyl radical (HO2) with other compounds over the entire pH range. Frozen, they can be kept at -196 degrees C for prolonged time periods with little loss in superoxide radical. As these solutions can be rendered free of molecular oxygen, studies of the reactivity of HO2/O-2 with oxygen-sensitive compounds under virtually anaerobic conditions are possible.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003080:Cold Temperature; D004355:Drug Stability; D004492:Edetic Acid; D000431:Ethanol; D008872:Microwaves; D010782:Photolysis; D012996:Solutions; D013481:Superoxides / Q000528:radiation effects; D014867:Water
chemical_list: D012996:Solutions; D014867:Water; D013481:Superoxides; D000431:Ethanol; D004492:Edetic Acid