A Potentiometric Sensor for Cd2+ Based on Carbon Nanotube Paste Electrode Constructed from Room Temperature Ionic Liquid, Ionophore and Silica Nanoparticles

被引：55
作者：
Afkhami, Abbas [1 ]
Bagheri, Hasan [2 ]
Shirzadmehr, Ali [1 ]
Khoshsafar, Hosein [1 ]
Hashemi, Pegah [1 ]
机构：
[1] Bu Ali Sina Univ, Fac Chem, Hamadan, Iran
[2] Islamic Azad Univ, Dept Chem, Takestan Branch, Takestan, Iran
来源：
ELECTROANALYSIS | 2012年 / 24卷 / 11期
关键词：
Potentiometric sensors; Modified carbon paste electrodes; Cadmium(II) determination; Multiwalled carbon nanotubes; Room temperature ionic liquids; POLYMERIC MEMBRANE ELECTRODES; HEAVY-METAL IONS; ENVIRONMENTAL-SAMPLES; POLY(VINYL CHLORIDE); SELECTIVE ELECTRODES; SCHIFF-BASES; CADMIUM; PRECONCENTRATION; COMPOSITES; LIGAND;
D O I：
10.1002/elan.201200246
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel and effective potentiometric sensor for the rapid determination of Cd2+ based on carbon paste electrode consisting of the room temperature ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate, multiwalled carbon nanotubes, silica nanoparticles and ionophore was constructed. The prepared composite has a low potential drift, high selectivity and fast response time, which leads to a more stable potential signal. A linear dynamic range of 4.50x10(-9)1.00x10(-1) mol L-1 with a detection limit of 2.00x10(-9) mol L-1 was obtained. The modified electrode was successfully applied to the accurate determination of trace amounts of Cd2+ in environmental and biological samples.
引用
收藏
页码：2176 / 2185
页数：10
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