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KINETICS OF RADIO-OXIDATION OF CYSTINE IN AQUEOUS SOLUTIONS

Journal Article · · Chemicke Listy (Czechoslovakia)
OSTI ID:4216099
Soft x rays (50 kv) accelerate oxidation or cystine (I) in solution, in the presence of O/sub 2/ of the air. Decrease of I, which is oxidized probably to disulfoxide, was studied by the authors by the polarographic method in ammoniacal solutions of CoCl/sub 2/. Kinetics of radiooxidation was measured in the case or l0/sub -3/--10/sup -6/ M solutions of I at dosage rates of 33 roentgens/second. The graph representing the ratio of reaction yield G at pH 3 to the initial concentration has the configuration of a parabola, i.e., G is approximately proportional to the square root of the concentration of I. At dosages exceeding l8 x 10/sup 17/ ev/ml, deviations from this correlation occur, which are attributed to regeneration of I from the disulfoxide.
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-13-022009
OSTI ID:
4216099
Journal Information:
Chemicke Listy (Czechoslovakia), Journal Name: Chemicke Listy (Czechoslovakia) Vol. Vol: 51; ISSN CHLSA
Country of Publication:
Country unknown/Code not available
Language:
English