ISFET-based differential pCO(2) sensors employing a low-resistance gas-permeable membrane

被引：36

作者：

Shin, JH ^{[1
]}

Lee, HJ ^{[1
]}

Kim, CY ^{[1
]}

Oh, BK ^{[1
]}

Rho, KL ^{[1
]}

Nam, H ^{[1
]}

Cha, GS ^{[1
]}

机构：

[1] KWANGWOON UNIV,DEPT CHEM,NOWAN KU,SEOUL 139701,SOUTH KOREA

来源：

ANALYTICAL CHEMISTRY | 1996年 / 68卷 / 18期

关键词：

D O I：

10.1021/ac960473h

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new type of ISFET-based differential pCO(2) sensor system is devised by employing a low-resistance gas-permeable membrane, Both the pCO(2)-FET and the reference FET (REFET) are made by coating their gate surfaces with an RTV silicone rubber film doped with valinomycin. The pCO(2) FET is covered with a hydrogel-based recipient layer inside the gas-permeable RTV membrane, but the REFET does not. include the hydrogel layer, Because of low resistance of the gas-permeable membrane, the reference electrode can be placed outside as a common reference for both FETs. Output signals from the pCO(2)-FET and the REFET are measured against the common reference, and the difference of these two signals is measured through a differential amplifier; therefore, calibration drifts of the two identical base ISFETs, caused by their thermal sensitivity, for example, cancel out It is also shown that the ion response or the potential drifts caused by both parts of the RTV membranes cancel out exactly the same way as in the case of the base ISFETs.

引用

页码：3166 / 3172

页数：7

共 24 条

[1] ORGANIC MEMBRANES FOR MINIATURIZED ELECTROCHEMICAL SENSORS - FABRICATION OF A COMBINED PO2, PCO2 AND PH SENSOR [J].

ARQUINT, P ;

KOUDELKAHEP, M ;

DEROOIJ, NF ;

BUHLER, H ;

MORF, WE .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 378 (1-2) :177-183

[2] INTEGRATED BLOOD-GAS SENSOR FOR PO2, PCO2 AND PH [J].

ARQUINT, P ;

VANDENBERG, A ;

VANDERSCHOOT, BH ;

DEROOIJ, NF ;

BUHLER, H ;

MORF, WE ;

DURSELEN, LFJ .

SENSORS AND ACTUATORS B-CHEMICAL, 1993, 13 (1-3) :340-344

[3] THE DESIGN OF DURABLE NA+-SELECTIVE CHEMFETS BASED ON POLYSILOXANE MEMBRANES [J].

BRUNINK, JAJ ;

LUGTENBERG, RJW ;

BRZOZKA, Z ;

ENGBERSEN, JFJ ;

REINHOUDT, DN .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 378 (1-2) :185-200

[4] ELECTROCHEMICAL PERFORMANCE, BIOCOMPATIBILITY, AND ADHESION OF NEW POLYMER MATRICES FOR SOLID-STATE ION SENSORS [J].

CHA, GS ;

LIU, D ;

MEYERHOFF, ME ;

CANTOR, HC ;

MIDGLEY, AR ;

GOLDBERG, HD ;

BROWN, RB .

ANALYTICAL CHEMISTRY, 1991, 63 (17) :1666-1672

[5] RESPONSE OF ION-SELECTIVE FIELD-EFFECT TRANSISTORS TO CARBON-DIOXIDE AND ORGANIC-ACIDS [J].

FOGT, EJ ;

UNTEREKER, DF ;

NORENBERG, MS ;

MEYERHOFF, ME .

ANALYTICAL CHEMISTRY, 1985, 57 (09) :1995-1998

[6] BICARBONATE-SENSITIVE LIQUID MEMBRANE ELECTRODES BASED ON NEUTRAL CARRIERS FOR HYDROGEN-IONS [J].

FUNCK, RJJ ;

MORF, WE ;

SCHULTHESS, P ;

AMMANN, D ;

SIMON, W .

ANALYTICAL CHEMISTRY, 1982, 54 (03) :423-429

[7] MICRO-ENZYME FIELD-EFFECT TRANSISTOR SENSOR USING DIRECT COVALENT BONDING OF UREASE [J].

GARDIES, F ;

JAFFREZICRENAULT, N ;

MARTELET, C ;

PERROT, H ;

VALLETON, JM ;

ALEGRET, S .

ANALYTICA CHIMICA ACTA, 1990, 231 (02) :305-308

[8]

GOLDBERG HD, 1993, THESIS U MICHIGAN

[9] UNSYMMETRICAL CALIX[4]ARENE IONOPHORE SILICONE-RUBBER COMPOSITE MEMBRANES FOR HIGH-PERFORMANCE SODIUM ION-SENSITIVE FIELD-EFFECT TRANSISTORS [J].

KIMURA, K ;

MATSUBA, T ;

TSUJIMURA, Y ;

YOKOYAMA, M .

ANALYTICAL CHEMISTRY, 1992, 64 (21) :2508-2511

[10] COMPARATIVE-STUDIES BETWEEN ION-SELECTIVE FIELD-EFFECT TRANSISTORS AND ION-SELECTIVE ELECTRODES WITH POLYMERIC MEMBRANES [J].

MIYAHARA, Y ;

SIMON, W .

ELECTROANALYSIS, 1991, 3 (4-5) :287-292

← 1 2 3 →