Pulse radiolytic investigations of peroxy radicals in aqueous solutions of acetate and glycine. Progress report, September 1, 1976--July 1, 1977. [5 MeV electrons]

Technical Report · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7300557

Abramovitch, S; Rabani, J

Aqueous solutions of glycine and acetate have been pulse irradiated in the presence of O/sub 2/. Radicals produced from these compounds by H-abstraction, reacted with O/sub 2/ to form peroxy radicals. The reaction rate constants k/sub (RH+O/sub 2/)/ = (2.1 +- 0.3) x 10/sup 9/ and approx. = 1 x 10/sup 9/ m/sup -1/ sec /sup -1/ measured for RH = acetate radicals and glycine radicals, at pH 8.2 and 7.9, respectively. The peroxy acetate radicals decay by a second order reaction, k = (6.5 +- 1) x 10/sup 8/ M/sup -1/ sec/sup -1/ at both pH = 5.7 and 8.2. The peroxy glycine radicals produce O/sub 2//sup -/ by a first order process, k = (1.5 +- 0.3) x 10/sup 5/ sec/sup -1/ at pH = 7.9. Evidence for the formation of O/sub 2//sup -/ from glycine peroxy radicals is presented.

• Research Organization: Hebrew Univ., Jerusalem (Israel). Dept. of Physical Chemistry
• OSTI ID: 7300557
• Report Number(s): COO-3221-43
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400500 -- Photochemistry
400600* -- Radiation Chemistry
ACETATES
AMINO ACIDS
AQUEOUS SOLUTIONS
BEAMS
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISPERSIONS
ELECTRON BEAMS
ENERGY RANGE
GLYCINE
HYDROPEROXY RADICALS
IRRADIATION
KINETICS
LEPTON BEAMS
MEV RANGE
MEV RANGE 01-10
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
PARTICLE BEAMS
PEROXY RADICALS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADICALS
RADIOLYSIS
REACTION KINETICS
RESEARCH PROGRAMS
SOLUTIONS