Analytical applications of cooperative interactions associated with charge transfer in cyanometalate electrodes: Analysis of sodium and potassium in human whale blood

被引:71
作者
Coon, DR
Amos, LJ
Bocarsly, AB [1 ]
Bocarsly, PAF
机构
[1] Princeton Univ, Dept Chem, Frick Lab, Princeton, NJ 08544 USA
[2] Univ Med & Dent New Jersey, New Jersey Med Sch, Dept Pathol, Newark, NJ 07103 USA
关键词
D O I
10.1021/ac970975a
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Nickel electrodes chemically modified with an interfacial layer of nickel ferrocyanide are shown to be of analytical utility for simultaneously sensing sodium and potassium ions in aqueous solutions, human whole blood serum, and human whole blood. By controlling the charge-transfer characteristics of this versatile interface, interfering blood proteins and potential interferences associated with other alkali cations can be avoided. A solid-state model which explains the excellent simultaneous selectivity and sensitivity of the nickel ferricyanide interface is proposed.
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页码:3137 / 3145
页数:9
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