2018•Bulletin of National University of Uzbekistan Mathematics and Natural SciencesOpen access

Extraction conductometric determination of scandium and thorium in kaolins

Нигора Хакимовна Кутлимуротова, Zulayho Smanova, Habibulla Tojimuhamedov, Zuhra Yaxshiyeva, Jasur Tursunqulov

Abstract

A method for extraction - conductometric determination of scandium and thorium with tributyl phosphate and trioctyl phosphine oxide in kaolin was developed. The equivalent electrical conductivity of the complex of scandium and thorium with 2,7-dinitrozo-1,8-dihydroxynaphthalene-3,6-disulfonic acid was found. A scheme for the separation and determination of kaolin content is proposed. The isotherms of scandium and thorium extraction are constructed. It was shown that at a concentration of nitric acid of 15.6 M they do not interfere with the determination of thorium and scandium.

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Key concepts: Scandium, Thorium, Extraction (chemistry), Nitric acid, Tributyl phosphate, Chemistry, Nuclear chemistry, Inorganic chemistry