Free radicals generated by radiolysis of aqueous solutions
Journal Article
·
· J. Chem. Educ.; (United States)
The free radicals produced in the radiolysis of aqueous solutions span the range of redox potentials from -2.9 to +2.65 volts. The identity and nature of these radicals were discussed. Most of the discussion was results obtained with low LET radiation sources (/sup 60/Co gamma radiation or electron accelerators). Water radiolysis provides the synthesis of many radicals and radical ions in aqueous solution. The primary radicals, e/sub aq//sup -/ H, OH, are well characterized. The radical population can be made to be 90% pure OH (or O/sup -/) if N/sub 2/O solutions are irradiated, the remaining 10% being H atoms. 55% of the radicals can be converted to H atoms in acid solution or in neutral phosphate solutions(e/sub aq//sup -/ reacts with H/sub 2/PO/sub 4//sup -/ to produce H). The remaining 45% (OH radicals) are difficult to convert to H by reaction with H/sub 2/, due to the slow rate of the reaction. About 100 atmospheres of H/sub 2/ are required to do the conversion in less than 10/sup -6/ sec. 3 figures, 3 tables. (DP)
- Research Organization:
- Brookhaven National Lab., Upton, NY
- OSTI ID:
- 6056547
- Journal Information:
- J. Chem. Educ.; (United States), Journal Name: J. Chem. Educ.; (United States) Vol. 58:2; ISSN JCEDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ABSORPTION SPECTRA
ANIONS
AQUEOUS SOLUTIONS
BEAMS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
G VALUE
GAMMA RADIATION
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXYL RADICALS
IONIZING RADIATIONS
IONS
LEPTON BEAMS
LEPTONS
MIXTURES
NONMETALS
OXYGEN COMPOUNDS
PARTICLE BEAMS
PEROXIDES
PRODUCTION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
SOLUTIONS
SOLVATED ELECTRONS
SPECTRA
WATER
400600* -- Radiation Chemistry
ABSORPTION SPECTRA
ANIONS
AQUEOUS SOLUTIONS
BEAMS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
G VALUE
GAMMA RADIATION
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXYL RADICALS
IONIZING RADIATIONS
IONS
LEPTON BEAMS
LEPTONS
MIXTURES
NONMETALS
OXYGEN COMPOUNDS
PARTICLE BEAMS
PEROXIDES
PRODUCTION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
SOLUTIONS
SOLVATED ELECTRONS
SPECTRA
WATER