Polarography of Uranium Chelate with 2,3‐Cresotic Acid

S. N. Chen, T. H. Chen, H. C. Gi, J. J. Wang

Research output: Contribution to journalArticle

Abstract

The polarography of uranyl ion in 2,3‐cresotic acid solution has been studied at 25°C under varying conditions of ligand concentration and pH. The ligands species were proved to be a 2,3‐cresotate anion. The half‐wave potential vs. pH value interpreted on the basis of pK value for the acid ionization, and resulted in agreement with the deduction. The mole ratio of metal to ligand was found to be 1:1 and 1:2 by conductometric titration. At pH < pK1, the complex species of UO2(H2A)2+ and UO2(HA)+ was identified. At pK1 < pH < pK2, the co‐existence of UO2(HA)+, UO2(OH)(HA)2 and UO2(A)22– was confirmed. At pH > pK2, the complex species of UO2(OH) (A)23– was formed.

Original languageEnglish
Pages (from-to)411-415
Number of pages5
JournalJournal of the Chinese Chemical Society
Volume35
Issue number6
DOIs
Publication statusPublished - 1988 Dec

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Polarographic analysis
Uranium
Ligands
Acids
Titration
Ionization
Anions
Metals
Ions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Chen, S. N. ; Chen, T. H. ; Gi, H. C. ; Wang, J. J. / Polarography of Uranium Chelate with 2,3‐Cresotic Acid. In: Journal of the Chinese Chemical Society. 1988 ; Vol. 35, No. 6. pp. 411-415.
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Polarography of Uranium Chelate with 2,3‐Cresotic Acid. / Chen, S. N.; Chen, T. H.; Gi, H. C.; Wang, J. J.

In: Journal of the Chinese Chemical Society, Vol. 35, No. 6, 12.1988, p. 411-415.

Research output: Contribution to journalArticle

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AB - The polarography of uranyl ion in 2,3‐cresotic acid solution has been studied at 25°C under varying conditions of ligand concentration and pH. The ligands species were proved to be a 2,3‐cresotate anion. The half‐wave potential vs. pH value interpreted on the basis of pK value for the acid ionization, and resulted in agreement with the deduction. The mole ratio of metal to ligand was found to be 1:1 and 1:2 by conductometric titration. At pH < pK1, the complex species of UO2(H2A)2+ and UO2(HA)+ was identified. At pK1 < pH < pK2, the co‐existence of UO2(HA)+, UO2(OH)(HA)2− and UO2(A)22– was confirmed. At pH > pK2, the complex species of UO2(OH) (A)23– was formed.

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