A Hydrogen Ion-Selective Poly(Vinyl Chloride) Membrane Electrode Based on Calix[4]arene as a Perchlorate Ion-Selective Electrode
| Autor: | CANEL, Esin, ERDEN, Sevcan, ÖZEL, Ayça DEMİREL, MEMON, Sahahabuddin |
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| Jazyk: | turečtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Volume: 32, Issue: 3 323-332 Turkish Journal of Chemistry |
| ISSN: | 1300-0527 1303-6130 |
| Popis: | A hydrogen ion-selective electrode was prepared using 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetracyanometoxy-calix[4]arene and the possibility of its use as a perchlorate ion-selective electrode was investigated using its characteristic of becoming perchlorate sensitive in acidic regions. The electrode of the optimum characteristic had a composition of 1% ionophore, 66% o-NPOE, and 33% PVC. This electrode exhibited a linear response over the range 1.0 \times 10-1-1.0 \times 10-5 M of perchlorate with a slope of 48.7 \pm 0.5 mV per p[ClO4]. The effects of the pH and the membrane composition were also investigated. The lifetime of the electrode was at least 4 months and its response time was 10-15 s. The selectivity coefficients of some anions were calculated by the matched potential method. |
| Databáze: | OpenAIRE |
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