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Analytical performances of lipophilic diamides based alkaline earth ion‐selective electrodes
Author(s) -
Tóth Klára,
Lindner Ernö,
Horváth Mária,
Jeney Judit,
Pungor Ernö,
Bitter István,
Ágai Béla,
Töke László
Publication year - 1993
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140050911
Subject(s) - selectivity , chemistry , ion , calcium , membrane , inorganic chemistry , electrode , alkaline earth metal , sodium , ion selective electrode , ionophore , combinatorial chemistry , organic chemistry , alkali metal , biochemistry , catalysis
Based on complex chemical considerations, lipophilic diamide derivatives have been designed and synthesized as ionophores for liquid membrane electrodes. The structure‐selectivity studies revealed that the majority of the ligands exhibit calcium ion selectivity, except the compound bis‐N,N‐dicyclohexyl‐malonamide. The latter has an almost equal selectivity for Ca 2+ and Mg 2+ and sufficiently rejects sodium ions, thus it lends itself to water hardness measurements.