Detection of heavy metal ions by ISFETs in a flow injection analysis cell

P.L.H.M. Cobben, P.L.H.M. Cobben, Richard J.M. Egberink, R.J.M. Egberink, Johan G. Bomer, J.R. Haak, Piet Bergveld, David Reinhoudt

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    An ion-selective field-effect transistor (ISFET) is chemically modified with a photopolymerizable and cyanopropyl modified polysiloxane containing N,N,N',N'-tetrabutyl-3,6-dioxaoctane-dithioamide as Cd2+ ionophore. This CHEMFET has a Nerstian response (30 mV/decade) to a change of cadmium activity in aqueous solutions. Selectivity coefficients of the CHEMFET towards potassium, calcium, copper, and lead are given. Preliminary results of the CHEMFET in a flow injection analysis cell without wire bonding and polymeric encapsulation are presented.
    Original languageUndefined
    Pages (from-to)304-307
    Number of pages4
    JournalSensors and actuators. B: Chemical
    Issue number6
    Publication statusPublished - 1992


    • METIS-106780
    • IR-12599

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