Rapid and Precise Coulometric Determination and Separation of Redox Inert Ions Based on Electrolysis for Ion Transfer at the Aqueous|Organic Solution Interface
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- KIHARA Sorin
- Kyoto Institute for Interesting Chemistry
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- KASUNO Megumi
- Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University
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Abstract
Flow systems for precise and accurate coulometric determinations of ions that were developed on the basis of electrolytic ion transfer at the aqueous|organic solution (W|O) interface are reviewed. The electrolysis cell in the system is composed of a porous poly(tetrafluoroethylene) tube (1.0 mm inner diameter), a metal wire (0.8 mm diameter) inserted into the tube, O into which the tube is immersed, a reference electrode in O and a platinum wire counter electrode in O. The electrolysis is carried out by forcing W containing a species of interest to flow through the narrow gap between the tube and the metal wire. The coulometric determination can be performed with an efficiency of more than 99% and a precision of better than 0.2% based on the ion transfer under an optimum condition, even if the ion is redox inert such as Na+, K+, Mg2+, Ca2+, ClO4−, picrate or alkylsulfonates. The system can be applied to selective electrolytic solvent extraction of ions.
Journal
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- Analytical Sciences
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Analytical Sciences 27 (1), 1-11, 2011
The Japan Society for Analytical Chemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390282679235677696
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- NII Article ID
- 10027739379
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- NII Book ID
- AA10500785
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- COI
- 1:STN:280:DC%2BC3M7hsVKgsg%3D%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 10932859
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- PubMed
- 21233553
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed