Lowering the detection limit of calcium selective ISFETs with polymeric membranes |
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| Authors: | Bratov Andrey Abramova Natalia Dom? X Nguez Carlos |
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| Institution: | Centro Nacional de Microelectrónica, Grupo Transductores Quimicos, Campus U.A.B., Bellaterra E08193 Barcelona, Spain |
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| Abstract: | Detection limits of Ca sensitive ISFETs with photocured polyurethane membranes with a neutral carrier and an ion-exchanger as ionophores are studied. It is shown that conditioning of ISFETs in solutions containing only interfering ions results in reduction of the detection limit. Zero-current ion fluxes approach elaborated for polymeric membrane ion-selective electrodes (ISEs) is used to explain the obtained results. |
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| Keywords: | ISFET Polymer membranes Detection limit |
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