Response of a copper(II) ion-selective electrode in cupric buffers based on macrocyclic polyamines.
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概要
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The behavior of a copper(II) ion-selective electrode at extremely low activity levels of free copper(II) was examined in copper(II) buffers based on macrocyclic triamines([9]aneN<SUB>3</SUB> and [10]aneN<SUB>3</SUB>) and macrocyclic tetramines ([12]aneN<SUB>4</SUB>, [14]aneN<SUB>4</SUB>, and [16]aneN<SUB>4</SUB>). Although the electrode showed the ideal behavior in the buffers based on [12]aneN<SUB>4</SUB> and [16]aneN<SUB>4</SUB>, non-ideal behavior was observed for the macrocyclic triamines and [14]aneN<SUB>4</SUB>. Thus, the macrocyclic polyamines did not always give the ideal copper(II) buffers for the electrode, in contrast to the case of acyclic polyamines. Stability constants, which were in good agreement with the reported values, could be determined only for [12]aneN<SUB>4</SUB> and [16]aneN<SUB>4</SUB>. An application of the cyclic tetramines to complexiometry is also presented.
- 公益社団法人 日本化学会の論文
著者
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Ohyoshi Akira
Department Of Applied Chemistry Faculty Of Engineering Kumamoto University
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Jyo Akinori
Department of Applied Analytical Chemistry, Faculty of Engineering, 36, Kyushu University
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Khono Takashi
Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University
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Nagamoto Akiyoshi
Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University
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