Yazar "Erden, Sevcan" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    A hydrogen ion-selective poly (vinyl chloride mebrane electrode based on calix (4)arene as a perchlorate ion-selective electrode
    (2008) Canel, Esin; Erden, Sevcan; Özel, Demirel Ayça; Memon, Sahahabuddin; Yılmaz, Mustafa; Kılıç, Esma
    A hydrogen ion-selective electrode was prepared using 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetracya-nometoxy-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 x 10{-1}-1.0 x 10{-5} M of perchlorate with a slope of 48.7. ± 0.5- mV per p[Cl04]. 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.
  • Küçük Resim Yok
    Öğe
    A hydrogen ion-selective poly(vinyl chloride) membrane electrode based on calix[4]arene as a perchlorate ion-selective electrode
    (SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2008) Canel, Esin; Erden, Sevcan; Özel, Ayça Demirel; Memon, Sahahabuddin; Yılmaz, Mustafa; Kılıç, Esma
    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.