title: A study of coated-wire potassium-valinomycin and sodium-monensin ion-sensing systems by use of a conventional field-effect transistor.
abstract: Polymer films containing a sodium or potassium ion-selective exchanger were coated onto platinum wire and incorporated into a potentiometric arrangement. Comparative results obtained by utilizing different measuring devices, one a conventional pH-meter and the other a field-effect transistor (FET) in series with an electrometer, are discussed. The linear range of either system is comparable with that of other electrochemical techniques. Possible applications of such a device are described.
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Thompson
authors.forename: U J
authors.initials: UJ
authors.lastname: Krull
authors.forename: P J
authors.initials: PJ
authors.lastname: Worsfold