Radiation chemistry of the ferrous sulfate-benzoic acid-xylenol orange system. [. gamma. rays]

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · Radiat. Res.; (United States)

DOI:https://doi.org/10.2307/3574902· OSTI ID:6459831

Gupta, B L; Bhat, R M; Gomathy, K R; Susheela, B

In the dosimetric system containing 0.20 mM ferrous ammonium sulfate, 5.0 mM benzoic acid, and 0.20 mM xylenol orange in 0.05 N sulfuric acid (FBX system), benzoic acid increases the G(Fe/sup 3 +/) value and ferric ions form a complex with xylenol orange. This paper presents the investigations carried out regarding the reactions of H/sub 2/O/sub 2/, OH, and H in the FBX system. The OH radicals were generated by the reaction of ferrous ions with H/sub 2/O/sub 2/. In the FBX system, each H/sub 2/O/sub 2/, OH, and H leads to the oxidation of 8, 7, and 11 ferrous ions, respectively. In the absence of xylenol orange, the above values respectively are 12, 11, and 13. The rate constant of the reaction of OH radical with xylenol orange in 0.05 N H/sub 2/SO/sub 4/ has been measured by competition kinetics using benzoic acid and its value has been found to be 7.9 x 10/sup 9/ M/sup -1/ sec/sup -1/. In the absence of oxygen there is no radiolytic oxidation of ferrous ions in FBX system.

• Research Organization: Bhabha Atomic Research Centre, Bombay
• OSTI ID: 6459831
• Journal Information: Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 75:2; ISSN RAREA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
BENZOIC ACID
CARBOXYLIC ACIDS
CHEMICAL DOSEMETERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CRYOGENIC FLUIDS
DECOMPOSITION
DOSEMETERS
DYES
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
G VALUE
GAMMA RADIATION
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXYL RADICALS
INDICATORS
IONIZING RADIATIONS
IRON COMPOUNDS
IRON SULFATES
MEASURING INSTRUMENTS
MONOCARBOXYLIC ACIDS
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
XYLENOL ORANGE