Chemically modified ion-sensitive field-effect transistors: elimination of the liquid junction potential in a double sensor flow-injection analysis cell

Peter L.H.M. Cobben; Richard J.M. Egberink; Johan G. Bomer; Robert Schouwenaar; Zbigniew Brzozka; Martinus Bos; Piet Bergveld; David N. Reinhoudt

doi:10.1016/0003-2670(93)80403-8

Chemically modified ion-sensitive field-effect transistors: elimination of the liquid junction potential in a double sensor flow-injection analysis cell

Peter L.H.M. Cobben, Richard J.M. Egberink, Johan G. Bomer, Robert Schouwenaar, Zbigniew Brzozka, Martinus Bos, Piet Bergveld, David N. Reinhoudt

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Abstract

A flow-through cell was designed that can be used for flow-injection analysis with two chemically modified ion-sensitive field-effect transistors (CHEMFETs) in close proximity. This offers the possibility of a differential measurement without influence of the liquid junction potential. The differential signal of a potassium- and a sodium-selective CHEMFET responded in a Nernstian manner and selectively towards potassium in an excess (fixed) concentration of sodium. A highly lead-selective CHEMFET was used in the same flow cell in combination with a potassium-selective CHEMFET.

Original language	English
Pages (from-to)	347-352
Journal	Analytica chimica acta
Volume	276
Issue number	2
DOIs	https://doi.org/10.1016/0003-2670(93)80403-8
Publication status	Published - 1993

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Cobben, P. L. H. M., Egberink, R. J. M., Bomer, J. G., Schouwenaar, R., Brzozka, Z., Bos, M., Bergveld, P., & Reinhoudt, D. N. (1993). Chemically modified ion-sensitive field-effect transistors: elimination of the liquid junction potential in a double sensor flow-injection analysis cell. Analytica chimica acta, 276(2), 347-352. https://doi.org/10.1016/0003-2670(93)80403-8

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title = "Chemically modified ion-sensitive field-effect transistors: elimination of the liquid junction potential in a double sensor flow-injection analysis cell",

abstract = "A flow-through cell was designed that can be used for flow-injection analysis with two chemically modified ion-sensitive field-effect transistors (CHEMFETs) in close proximity. This offers the possibility of a differential measurement without influence of the liquid junction potential. The differential signal of a potassium- and a sodium-selective CHEMFET responded in a Nernstian manner and selectively towards potassium in an excess (fixed) concentration of sodium. A highly lead-selective CHEMFET was used in the same flow cell in combination with a potassium-selective CHEMFET.",

author = "Cobben, {Peter L.H.M.} and Egberink, {Richard J.M.} and Bomer, {Johan G.} and Robert Schouwenaar and Zbigniew Brzozka and Martinus Bos and Piet Bergveld and Reinhoudt, {David N.}",

year = "1993",

doi = "10.1016/0003-2670(93)80403-8",

language = "English",

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journal = "Analytica chimica acta",

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TY - JOUR

T1 - Chemically modified ion-sensitive field-effect transistors

T2 - elimination of the liquid junction potential in a double sensor flow-injection analysis cell

AU - Cobben, Peter L.H.M.

AU - Egberink, Richard J.M.

AU - Bomer, Johan G.

AU - Schouwenaar, Robert

AU - Brzozka, Zbigniew

AU - Bos, Martinus

AU - Bergveld, Piet

AU - Reinhoudt, David N.

PY - 1993

Y1 - 1993

N2 - A flow-through cell was designed that can be used for flow-injection analysis with two chemically modified ion-sensitive field-effect transistors (CHEMFETs) in close proximity. This offers the possibility of a differential measurement without influence of the liquid junction potential. The differential signal of a potassium- and a sodium-selective CHEMFET responded in a Nernstian manner and selectively towards potassium in an excess (fixed) concentration of sodium. A highly lead-selective CHEMFET was used in the same flow cell in combination with a potassium-selective CHEMFET.

AB - A flow-through cell was designed that can be used for flow-injection analysis with two chemically modified ion-sensitive field-effect transistors (CHEMFETs) in close proximity. This offers the possibility of a differential measurement without influence of the liquid junction potential. The differential signal of a potassium- and a sodium-selective CHEMFET responded in a Nernstian manner and selectively towards potassium in an excess (fixed) concentration of sodium. A highly lead-selective CHEMFET was used in the same flow cell in combination with a potassium-selective CHEMFET.

U2 - 10.1016/0003-2670(93)80403-8

DO - 10.1016/0003-2670(93)80403-8

M3 - Article

SN - 0003-2670

VL - 276

SP - 347

EP - 352

JO - Analytica chimica acta

JF - Analytica chimica acta

IS - 2

ER -

Chemically modified ion-sensitive field-effect transistors: elimination of the liquid junction potential in a double sensor flow-injection analysis cell

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