EFFECTS OF ANIONIC SITES ON THE SELECTIVITY OF SODIUM-SENSITIVE CHEMFETS

被引：25

作者：

BRUNINK, JAJ

BOMER, JG

ENGBERSEN, JFJ

VERBOOM, W

REINHOUDT, DN

机构：

[1] UNIV TWENTE,MESA RES INST,POB 217,7500 AE ENSCHEDE,NETHERLANDS

[2] UNIV TWENTE,ORGAN CHEM LAB,7500 AE ENSCHEDE,NETHERLANDS

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1993年 / 15卷 / 1-3期

关键词：

D O I：

10.1016/0925-4005(93)85050-K

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Calix[4]arene amides incorporated in poly(vinyl chloride) membranes provide good Na+ selectivity for CHEMFETs. A remarkable difference in the Na+/Ca2+ selectivity was observed depending on the presence or absence of tetraphenylborate ions in the membrane matrix. In the latter case the potentiometric selectivity coefficient (log K(Na,Ca)Pot) increased from -2.1 to -3.6. Calix[4]arene amides proved to be excellent ionophores to obtain Na+ selectivity in the presence of K+, i.e. log K(Na,K)Pot = -2.7.

引用

页码：195 / 198

页数：4

共 18 条

[1]

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