The role of metals in aqueous superoxide chemistry
Conference
·
OSTI ID:6322812
A focal point in the research of metal catalyzed reactions involving oxygen derived species/radicals (OH, HO/sub 2//O/sub 2//sup -/, H/sub 2/O/sub 2/, etc.), is the search for the true nature and mode of formation of the oxidizing agent(s) responsible for the biological damage observed in systems containing both hydrogen peroxide and superoxide radicals. There appears to be a general agreement that one of the most deleterious species is the OH radical, generated either in the ''Metal Catalyzed Haber Weiss Reaction'' or a ''Reductant Driven Fenton Type Reaction.'' The subtle difference between these two mechanisms is that Mechanism I is merely a specific case of a system (Mechanism II) that generates OH radicals using a variety of metals (Fe, Cu, Mn, Ti, etc.) and reductants. 41 refs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6322812
- Report Number(s):
- BNL-39942; CONF-870701-1; ON: DE87012125
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
COBALT COMPLEXES
COMPLEXES
COPPER COMPLEXES
ENZYMES
IRON COMPLEXES
KINETICS
OXIDOREDUCTASES
RADICALS
REACTION KINETICS
STRUCTURE-ACTIVITY RELATIONSHIPS
SUPEROXIDE DISMUTASE
SUPEROXIDE RADICALS
TRANSITION ELEMENT COMPLEXES
400201* -- Chemical & Physicochemical Properties
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
COBALT COMPLEXES
COMPLEXES
COPPER COMPLEXES
ENZYMES
IRON COMPLEXES
KINETICS
OXIDOREDUCTASES
RADICALS
REACTION KINETICS
STRUCTURE-ACTIVITY RELATIONSHIPS
SUPEROXIDE DISMUTASE
SUPEROXIDE RADICALS
TRANSITION ELEMENT COMPLEXES