Abstract

The color reaction of uranium (VI) with phenol was applied to the detection of uranium (VI). A drop of the sample solution as added on a drop of phenol solution on a porcelain plate. Uranium gave brown to pale yellow color depending on its amount. Iron (III), cerium (IV) and molybdenum (VI) gave similar coloration, but the color by iron and cerium dissappeared by reducing them to Fe (II) and Ce (III). Phenol is thus useful as a reagent for uranium (VI) which is more specific than thiocyanate, ferrocyanide, oxine and Rhodamine B.

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