Abstract
A method for determining uranium in phosphate rock and phosphoric acid was developed. It is based on extraction of quadrivalent uranium by a solution of lauryl acid phosphates in light petroleum, this reagent being easily prepared from dodecanol and phosphorus pentoxide. The organic extract is evaporated to dryness, heated with nitric, sulfuric, and perchloric acids, and analyzed colorimetrically with hydrogen peroxide. (auth)
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