Discrimination of methylammonium from organic ammonium ions using ion-selective electrodes based on calix[4]arene-crown-6 conjugates

被引：17

作者：

Katsu, T ^{[1
]}

Matsumoto, M ^{[1
]}

机构：

[1] Okayama Univ, Fac Pharmaceut Sci, Okayama 7008530, Japan

来源：

ANALYTICAL SCIENCES | 2001年 / 17卷 / 06期

关键词：

D O I：

10.2116/analsci.17.721

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Calix[4]-bis-2,3-naphtho-crown-6 can be used to discriminate between methylammonium and other organic ammonium ions. An electrode based on this ionophore, potassium tetrakis(p-chlorophenyl)borate (20 mol% relative to the ionophore) as an ionic additive and bis(2-ethylhexyl) sebacate as a solvent mediator in a poly(vinyl chloride) membrane matrix, displayed higher selectivity for methylammonium than for various other organic ammonium ions. However, there was considerable interference by inorganic cations, especially Cs+. Similar calix[4]arene-crown-6 conjugates, such as calix[4]-bis-1,2-benzo-crown-6, calix[4]-bis-crown-6, 1,3-dioctyloxy-calix[4]arene-crown-6, 13-diisopropoxy-calix[4]arene-crown-6 and 1,3-dimethoxy-calix[4]arene-crown-6 were less effective in discriminating methylammonium.

引用

页码：721 / 725

页数：5

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