Transport of calcium and potassium ions in opposite directions in a liquid membrane system |
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| Authors: | Yohji Nakatsuji Toshinori Inoue Masato Wada Mitsuo Okahara |
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| Affiliation: | (1) Department of Applied Chemistry, Faculty of Engineering, Osaka University, Yamada-oka, 565 Suita, Osaka, Japan |
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| Abstract: | A new type of 18-crown-6 derivative having two carboxylic acids on the side arms transported calcium and potassium ions in opposite directions across a dichloromethane membrane by pH control. Calcium and potassium ions were concentrated in the acidic and the basic phases, respectively. The presence of picrate ion in the acidic phase plays an important role in the transport of potassium ion from the acidic to the basic phase. |
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| Keywords: | Crown ether synthetic ionophore liquid membrane active transport |
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