Voltammetric Determination of Vanadium(V) and Vanadium(IV) through the Formation of a 12-Molybdovanadate(V) Complex.

• HIMENO Sadayuki

  Department of Chemistry, Faculty of Science, Kobe University

• KUSUYAMA Kohji

  Department of Chemistry, Faculty of Science, Kobe University

• HASHIMOTO Masashi

  Department of Chemistry, Faculty of Science, Kobe University

• ISHIO Nobuhiro

  Department of Chemistry, Faculty of Science, Kobe University

Bibliographic Information

Other Title

• Voltammetric Determination of Vanadium

Abstract

A simple voltammetric method has been developed for the determination of V(V) and V(IV). When a mixture of V(V) and V(IV) is added last of all to a 50 mM Mo(VI)-0.3 M HCl-70%(v/v) CH₃CN system, only V(V) reacts with Mo(VI) to form a 12-molybdovanadate(V) complex which undergoes a two-step reduction at the glassy carbon (GC) electrode; the reduction current is directly proportional to the V(V) concentration in the mixture. On the other hand, when HCl is added last after heating the Mo(VI)-CH₃CN system containing a mixture of V(V) and V(IV) at 60°C for 10 min, V(IV) is com-pletely oxidized to V(V), and the total concentration of vanadium is determined. The V(IV) concentration is determined by subtracting the V(V) concentration before oxidation from the total concentration of vanadium. Interferences from foreign ions are also discussed.

Journal

• Analytical Sciences

  Analytical Sciences 14 (4), 681-685, 1998

  The Japan Society for Analytical Chemistry

Keywords

• Analytical Chemistry

Details

• CRID: 1390282679232530944
• NII Article ID: 130004439882
• NII Article ID: 10002416298
• NII Book ID: AA10500785
• DOI: 10.2116/analsci.14.681
• COI: 1:CAS:528:DyaK1cXltlCksLo%3D
• ISSN: 13482246
• ISSN: 09106340
• NDL BIB ID: 4547624
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4547624
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.14.681.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.14.681/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/14/4/14_4_681/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed