EVALUATION OF THE SENSOR PROPERTIES OF THE PH-STATIC ENZYME SENSOR

被引：16

作者：

VANDERSCHOOT, BH ^{[1
]}

BERGVELD, P ^{[1
]}

机构：

[1] TWENTE UNIV TECHNOL,FAC ELECT ENGN,POB 217,7500 AE ENSCHEDE,NETHERLANDS

来源：

ANALYTICA CHIMICA ACTA | 1990年 / 233卷 / 01期

关键词：

D O I：

10.1016/S0003-2670(00)83460-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The pH-static enzyme sensor consists of a chemical sensor-actuator system covered with a thin enzyme-entrapping membrane. By the electrochemical generation of protons or hydroxyl ions, pH changes induced by the conversion of a substrate by the enzymatic reaction are compensated. The pH inside the membrane remains at a constant level and the control current is linearly related to the substrate concentration and independent of the buffer capacity of the sample. The sensitivity and linearity of the sensor response are evaluated. Depending on the enzyme load of the membrane, the operation of the sensor is either diffusion controlled or determined by the enzyme kinetics. © 1990.

引用

页码：49 / 57

页数：9

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