Separation and gravimetric determination of thorium and cerium(IV) with vanillin |
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| Authors: | BD Jain JJ Singh |
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| Institution: | Department of Chemistry, University of Delhi, Delhi-6 India |
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| Abstract: | Vanillin forms insoluble complexes with thorium and cerium(IV) at pH 4.0–6.2 and 2.5–7.0 respectively. Thorium and cerium can be determined gravimetrically and separated from each other as well as from uranium(VI) and typical trivalent rare earths. The precipitates obtained are ignited to the corresponding oxide and weighed; as little as 4.4 mg of ThO2 and 4.9 mg of CeO2 can be determined. |
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