Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 76, Issue 1-3, Pages 653-659Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(01)00662-1
Keywords
ISE; detection limits; lipophilic anionic agents; lipophilicity; ternary complexes
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The dependence of detection limits of ion-selective electrodes (ISEs) based on ionophores with phosphoryl-containing terminal groups on the nature and concentration of lipophilic anionic compounds was investigated. It was shown that by including superstoichiometric amounts of lipophilic anionic compounds into the membrane, the lower detection limit can be decreased significantly. A model describing the mechanism of the dependence of the lower detection limits on both the amount and nature of the lipophilic anionic additives used is presented. (C) 2001 Published by Elsevier Science B.V.
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