A hydrogen ion-selective poly(vinyl chloride) membrane electrode based on calix[4]arene as a perchlorate ion-selective electrode

被引:0
|
作者
Canel, Esin [1 ]
Erden, Sevcan [1 ]
Ozel, Ayca Demirel [1 ]
Memon, Sahahabuddin [2 ]
Yilmaz, Mustafa [2 ]
Kilic, Esma [1 ]
机构
[1] Ankara Univ, Fac Sci, Dept Chem, TR-06100 Ankara, Turkey
[2] Selcuk Univ, Fac Arts & Sci, Dept Chem, Konya, Turkey
关键词
calix[4] arene; perchlorate; PVC membrane ion-selective electrode; potentiometry;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A hydrogen ion-selective electrode was prepared using 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetracyanometoxycalix[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 x 10(-1)-1.0 x 10(-5) M of perchlorate with a slope of 48.7 +/- 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.
引用
收藏
页码:323 / 332
页数:10
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