Azothia- and Azoxythiacrown Ethers as Ion Carriers. Part II. Anionic Response of Membrane Electrodes

Ion-selective electrodes with plasticized poly(vinyl chloride) membranes containing 13-membered azothia- and azoxythiacrown ether complexes with silver, mercury or copper ions have been investigated. The potentiometric response towards various anions was studied. For membranes based on azothiacrown...

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Published in:Journal of inclusion phenomena and molecular recognition in chemistry 2001-04, Vol.39 (3-4), p.309-314
Main Authors: Wygladacz, Katarzyna, Malinowska, Elzbieta, Szcztygelska-Tao, Jolanta, Biernat, Jan F
Format: Article
Language:English
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Summary:Ion-selective electrodes with plasticized poly(vinyl chloride) membranes containing 13-membered azothia- and azoxythiacrown ether complexes with silver, mercury or copper ions have been investigated. The potentiometric response towards various anions was studied. For membranes based on azothiacrown ether (B) complexes the following selectivity patterns were found:I > SCN, Br > Cl {/content/wr124k47h068548n/xxlarge8811.gif} ClO4 > salicylate, NO3 (complex B with silver), I > ClO4 > SCN, Br > salicylate > Cl, NO3 (complex B with mercury) and SCN > I > Br > ClO4 > Cl > salicylate > NO3 (complex B with copper). For azoxythiacrown ether (A) only membranes containing its complex with mercury exhibited pronounced anion response and the selectivity pattern was similar to that observed for complex B with mercury. The origin of the anion response has been discussed.
ISSN:0923-0750
DOI:10.1023/A:1011196426559