Salicylate Ion-Selective Electrode Based on a Calix[4]arene as Ionophore.

Autor:	Nur Ayanoğlu, Melek, Kormalı Ertürün, H. Elif, Demirel Özel, Ayça, Şahin, Özlem, Yılmaz, Mustafa, Kılıç, Esma
Předmět:	SALICYLATES ION selective electrodes IONOPHORES POTENTIOMETRY HIGH performance liquid chromatography GAS chromatography/Mass spectrometry (GC-MS)
Zdroj:	Electroanalysis; Jul2015, Vol. 27 Issue 7, p1676-1684, 9p
Abstrakt:	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 1.0Ã--10-5Â-1.0Ã--10-1 M with a detection limit of 4.3Ã--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 5Â-10 s. It was successfully used for the potentiometric determination of salicylate in pharmaceutical preparations. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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