| STUDIES ON RESPONSE CHARACTERISTICS OF DRUG ISE'S (Ⅳ) SELECTIVITY OF, DRUG ISE'S WITH HETERO-POLY ACID ANION SITE TOWARD METAL IONS |
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| 引用本文： | 姚守拙,马万里,聂利华.STUDIES ON RESPONSE CHARACTERISTICS OF DRUG ISE''''S (Ⅳ) SELECTIVITY OF, DRUG ISE''''S WITH HETERO-POLY ACID ANION SITE TOWARD METAL IONS[J].中国科学B辑(英文版),1990(5). |
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| 作者姓名： | 姚守拙 马万里 聂利华 |
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| 作者单位： | New Material Research Institute，Hunan University，Changsha 410012，PRC，New Material Research Institute，Hunan University，Changsha 410012，PRC，New Material Research Institute，Hunan University，Changsha 410012，PRC |
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| 基金项目： | Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | The relationship between the selectivity of six drug ion-selective electrodes with anionic species of hetero-poly acid as exchange site and the structural and thermodynamical parameters of the metal ion has been investigated experimentally and theoretically. The electrode selectivity is controlled mainly by the extractibility or hydrophobicity of the metal ion, but not by the ion-association-complex formation process. Linear relationship exists between the pK_(ij) value and the structural parameter z~2/(r + 0.85) and the thermodynamic parameter of hydration (△G_h) of the metal ion. Better correlation is obtained for the pK_(ij)vs. (z~2/r)~(-k) relationship.
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