Premium
Salicylate Ion‐Selective Electrode Based on a Calix[4]arene as Ionophore
Author(s) -
Nur Ayanoğlu Melek,
Kormalı Ertürün H. Elif,
Demirel Özel Ayça,
Şahin Özlem,
Yılmaz Mustafa,
Kılıç Esma
Publication year - 2015
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.201400737
Subject(s) - ionophore , electrode , chemistry , calixarene , ion , combinatorial chemistry , ion selective electrode , inorganic chemistry , calcium , organic chemistry , selectivity , molecule , catalysis
A salicylate‐selective electrode based on calix[4]arene derivative was developed and its response characteristics were investigated. The optimum membrane composition was 1 % ionophore, 30 % PVC, 69 % DOS. The electrode exhibited a Nernstian slope of 58.8±0.5 mV/pSal in the range of 1.0×10 −5 –1.0×10 −1 M with a detection limit of 4.3×10 −6 M at pH 4.0, 20±1 °C. The potentiometric response of the electrode in the presence of different anions was investigated by the separate solution method. The lifetime was found at least 4 months, and its response time was 5–10 s. It was successfully used for the potentiometric determination of salicylate in pharmaceutical preparations.