Preparation of sodium ion-sensing plates based on a thin layer liquid membrane containing a neutral ionophore and a lipophilic anionic dye

被引：7

作者：

Hisamoto, H ^{[1
]}

Sato, S ^{[1
]}

Sato, K ^{[1
]}

Siswanta, D ^{[1
]}

Suzuki, K ^{[1
]}

机构：

[1] Keio Univ, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 223, Japan

来源：

ANALYTICAL SCIENCES | 1998年 / 14卷 / 01期

关键词：

ion-selective optode; neutral ionophore; lipophilic anionic dye; optical sensor; sensing plate;

D O I：

10.2116/analsci.14.127

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sodium ion-sensing plate was prepared as an easily-handled ion sensing optical chemical sensor (optode) probe. The sensing plate consisted of an ion-sensing liquid thin layer containing a Na+-selective neutral ionophore (16-crown-5 derivatives) and a lipophilic anionic dye (KD-A3), which was placed on a chemically modified (octadecyl silanized) frosted glass plate that was covered with a cellulose dialysis membrane. This ion-sensing plate can easily determine Na+ ranging from 10(-4) to 10(-1) M by simply dipping the I!late into the sample solution. The response time was ca. 80 s for 10(-1) M NaCl with good reproducibility (relative standard deviation (RSD)=+/-1.33 % for ten sequential measurements).

引用

页码：127 / 131

页数：5

共 27 条

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