Solvent Extraction Method for the Radiochemical Determination of Zinc

Solvent Extraction Method for the Radiochemical Determination of Zinc

This method for the determination of radioactive zinc in fission-product mixtures is based on strong base scavenging of basic medium insoluble ions with amphoteric zinc remaining in solution, followed by solvent extraction of the diethyldithiocarbamate complex into ethyl acetate. Zinc was removed fr...

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Veröffentlicht in:Analytical chemistry (Washington) 1961-02, Vol.33 (2), p.235-236
Hauptverfasser: Maeck, W. J, Kussy, M. E, Rein, J. E
Format: Artikel
Sprache:eng
Schlagworte:
ACETATES
ALKYL RADICALS
CARBAMATES
CHEMICALS
CHEMISTRY
COMPLEXES
DEDTC
DYES
EDTA
ERIOCHROME DYES
ETHYL RADICALS
EXCITATION
FISSION PRODUCTS
HYDROCHLORIC ACID
IONS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
RADIOCHEMISTRY
SCINTILLATION COUNTERS
SODIUM IODIDES
SOLVENT EXTRACTION
STRIPPING
THALLIUM
THERMAL NEUTRONS
TITRATION
URANIUM 235
ZINC 72
ZINC COMPLEXES
ZINC ISOTOPES
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Beschreibung
Zusammenfassung:This method for the determination of radioactive zinc in fission-product mixtures is based on strong base scavenging of basic medium insoluble ions with amphoteric zinc remaining in solution, followed by solvent extraction of the diethyldithiocarbamate complex into ethyl acetate. Zinc was removed from the organic phase by stripping with dilute hydrochloric acid. The yield determination was based on an EDTA titration with Eriochrome Black T indicator. Counting was done in a well-type NaI(TI) scintillation crystal. The method was evaluated by measuring the fission yield of Zn72 in a thermal neutron- irradiated sample of U235. A value of 2.6 x 10-5% is reported.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac60170a022