Voltammetric Determination of Vanadium(V) and Vanadium(IV) through the Formation of a 12-Molybdovanadate(V) Complex.
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- HIMENO Sadayuki
- Department of Chemistry, Faculty of Science, Kobe University
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- KUSUYAMA Kohji
- Department of Chemistry, Faculty of Science, Kobe University
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- HASHIMOTO Masashi
- Department of Chemistry, Faculty of Science, Kobe University
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- ISHIO Nobuhiro
- Department of Chemistry, Faculty of Science, Kobe University
Bibliographic Information
- Other Title
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- Voltammetric Determination of Vanadium
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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
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- Analytical Sciences
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Analytical Sciences 14 (4), 681-685, 1998
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390282679232530944
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- NII Article ID
- 130004439882
- 10002416298
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- NII Book ID
- AA10500785
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- COI
- 1:CAS:528:DyaK1cXltlCksLo%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 4547624
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed