RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
Determination of Zirconium in Natural Water by Spectrophotometry following the Concentration Step with Yield Tracer
Kan KIMURAYoshimitsu HIRAOMuneo AYABEKatsumi HIROSE
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1978 Volume 27 Issue 12 Pages 705-708

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Abstract

Zirconium in natural water samples was determined spectrophotometrically after concentration using 95Zr as a yield tracer. Acidified sample (1 l) with a known amount of 95Zr was evaporated to dryness, treated with hydrofluoric and nitric acids, and then with nitric and perchloric acids, and evaporated nearly to dryness. The residue was taken up with 2 M perchloric acid and zirconium in the solution was extracted with 0.1 M thenoyltrifluoroacetone (TT-A) in benzene. The TTA complex solution was converted to hydrochloric acid solution. After the recovery yield was estimated by measuring the radioactivity of 95Zr in the final solution, zirconium was then determined by spectrophotometry with Arsenazo III. Zirconium contents in lake and hot and cold spring samples from Nikko and Shiobara districts were found to be 0.29-2.8μg/l by this method.

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