Chromium(III) Potentiometric Sensor Based on Para-Tertiary-Butyl Calix[4]arene

被引：3
|
作者：
Sadeghi, Hayedeh Bagheri [1 ]
Tamaddon, Atefeh [1 ]
Afifinia, Hadi [1 ]
Almasian, Nasim [1 ]
Bozorgvar, Fatemeh [1 ]
Mollaei, Somayeh [1 ]
机构：
[1] Islamic Azad Univ, Dept Chem, Tehran Cent Branch, Tehran, Iran
来源：
ELECTROANALYSIS | 2011年 / 23卷 / 10期
关键词：
p-tert-butyl calix[4]arene; Chromium(III); Ion selective electrodes; ION-SELECTIVE ELECTRODES; WATER; PRECONCENTRATION; SPECIATION; CR(III); CR(VI);
D O I：
10.1002/elan.201100220
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new chromium(III) PVC membrane sensor incorporating p-tertiary-butyl calix[4]arene as ionophore, potassium tetrakis as additive and dibutyl phthalate (DBP) as plasticizer was constructed. The electrode exhibited an excellent potentiometric response over a wide concentration range of 1.0x10(-7)-1.0x10(-1) M with a Nernstian slope of 20 +/- 0.5 mV per decade. The detection limit was 5.0x10(-8) M. The electrode showed a better performance over a pH range of 3.0-8.0, and had a short response time of about <15 s. The electrode was successfully applied to potentiometric titration of Cr (III) with EDTA and for direct determination of chromium(III) in waste water.
引用
收藏
页码：2472 / 2478
页数：7
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