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KMID : 1059519980420050531
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Journal of the Korean Chemical Society
1998 Volume.42 No. 5 p.531 ~ p.538
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The Pb2+ Ion Affinitive Membrane Electrode Based on New Calix[4
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Kim Eun-Jin
Kim Min-Kyu
Namgung Mi-Ok
Paek Kyung-Soo
Yun Young-Ja
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Abstract
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The ion selective membrane electrode made of calix[4]arene-based host 1 as ionophore, poly (vinyl chloride) (PVC) as matrix and dioctylsebacate (DOS) as a plasticizer was studied. The potential responses of this membrane electrode to alkali, alkaline earth and transition metal cations were investigated. Especially this membrane electrode was turned out to be affinitive for Pb2+ in the deionized water. It was observed that the response was linear in the concentration range from 1.0×10-1 M to 1.0×10-6 M of Pb2+ and its slope (26.5 mV/decade) was near to the sub-Nernstian response in deionized water. Also, the potential was maintained constantly in the range of pH 4.00-12.00, which supports the potential usage as Pb2+ affinitive electrode in the deionized water.
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