Author/Authors :
Nezamzadeh-Ejhieh، Alireza نويسنده Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran , , Badri، Atefeh نويسنده Department of Chemistry, Islamic Azad University, Shahreza Branch, P.O. Box 311-86145, Shahreza, Isfahan, Iran ,
Abstract :
Surfactant modified zeolite Y nano cluster was used to characterize its ability as an
anion carrier in a PVC membrane electrode. The electrode showed excellent response
characteristics to perchlorate anion. The electrode exhibited Nernstian response to ClO4
?
anion over a wide concentration range covering the range 1.2×10-6 to 1.5×10-1 M with low
detection limit 5.7×10?7 M and a slope of 59.6±0.8 mV per decade of perchlorate
concentration. The electrode possess fast response time, reasonable reproducibility,
appropriate lifetime and, most importantly, good selectivity toward ClO4
? relative to a variety
of other common anions. The electrode response to perchlorate remained constant in the
temperature range of 20-45 oC and in the presence of 1.0×10-4–3.2×10-3 M NaNO3. The
potentiometric response of the electrodes is independent of the pH of test solution in the pH
range of 2.1–10.8. The proposed sensors were used in potentiometric determination of
perchlorate ions in river and tap waters .
