CHEMICAL-SENSITIVITY OF AN ISFET WITH TA2O5 MEMBRANE IN STRONG ACID AND ALKALINE-SOLUTIONS

被引：42

作者：

BOBROV, PV ^{[1
]}

TARANTOV, YA ^{[1
]}

KRAUSE, S ^{[1
]}

MORITZ, W ^{[1
]}

机构：

[1] HUMBOLDT UNIV,SEKT CHEM,W-1080 BERLIN,GERMANY

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1991年 / 3卷 / 01期

关键词：

D O I：

10.1016/0925-4005(91)85010-G

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A detailed study concerning the chemical sensitivity of an ISFET with a Ta2O5 membrane is presented. The results indicate that in the absence of alkali ions, the Ta2O5-ISFET has practically an ideal Nernstian pH response in a wide pH range from -7 to 13.7. A deviation from Nernstian response has been observed in electrolyte solutions containing lithium (at pH > 7), sodium and potassium (at pH > 12) ions. Lithium ions have the most significant effect, giving rise to a change from pH response to pLi response.

引用

页码：75 / 81

页数：7

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