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Title Effect of gamma radiation on some organic pH indicators
Creator/Author Zittel, H.E.
Publication Date1973 Mar 01
OSTI IdentifierOSTI ID: 4440387
Other Number(s)Journal ID: JRACB
Resource TypeJournal Article
Resource RelationJournal Name: J. Radioanal. Chem., v. 14, no. 1, pp. 19-28; Other Information: Orig. Receipt Date: 30-JUN-74
Research OrgOak Ridge National Lab., TN
SubjectN40300* --Chemistry--Radiation Chemistry; *DYES-- CHEMICAL RADIATION EFFECTS; *METHYL ORANGE-- CHEMICAL RADIATION EFFECTS; AQUEOUS SOLUTIONS; COLOR; ETHANOL; GAMMA RADIATION; PH VALUE; PHOTON BEAMS
Description/AbstractThe effect of gamma -radiation on the color intensity of a series of representative organic dyes, commonly used as pH indicators, was studied. In aqueous medium, at commonly used concentration levels, the dyes demonstrate ability to indicate pH after gamma -doses of 10/sup 3/ to 10/sup -4/ R. In general all the dyes show less sensitivity to radiation in neutral or basic media than in acid media. The compounds demonstrate a pseudo first order degradation reaction rate which was shown to be the expected radiation cffect zero order rate. Of those compounds studied, methyl orange proved to be the most sensitive to radiation while bromocresol green is the most resistant to radiation damage. It was found that addition of small amounts of ethyl alcohol to the medium was effective in decreasing dye radiation damage to a large degree. (auth)
Country of PublicationCountry unknown/Code not available
LanguageEnglish
FormatMedium: X
System Entry Date2008 Feb 05

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