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Original Articles

Differential Pulse Polarographic Determination of Uranium in Bituminous Coal

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Pages 25-31 | Received 15 Nov 1996, Accepted 10 Feb 1997, Published online: 22 Sep 2006
 

Abstract

A liquid-liquid extraction and determination of uranyl ion in coal ash have been investigated. Synergistic effects were observed using a combination of thenoyltrifluoracetone, tributyl phosphate, and methyl isobutyl ketone. After the separation of interfering ions by precipitation with a hot ethanolic solution of thioacetamide, the determination of uranyl ion was performed by differential pulse polarography using a solution of 1.0 M TRIS-HCl as supporting electrolyte. The average uranium content in bituminous coal was in agreement with the spectrophotometric method using 4-(2-pyridylazo)resorcinol.

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