Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

被引：62
|
作者：
Menart, Eva [1 ]
Jovanovski, Vasko [1 ]
Hocevar, Samo B. [1 ]
机构：
[1] Natl Inst Chem, Analyt Chem Lab, SI-1000 Ljubljana, Slovenia
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2015年 / 52卷
关键词：
Silver particles; Square-wave voltammetry; Nitrite; Ionic liquid; Carbon paste electrode; ELECTROCATALYTIC REDUCTION; COMPOSITE ELECTRODE; NITRATE; NANOCOMPOSITE; OXIDATION; SENSOR; CHEMILUMINESCENCE; CHROMATOGRAPHY; NANOPARTICLES; NANOTUBES;
D O I：
10.1016/j.elecom.2015.01.017
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A simple silver particle-modified carbon paste electrode is proposed for the determination of low concentration levels of nitrite ions. The electrode consists of a carbon powder decorated with silver sub-micrometre particles (AgPs) and a hydrophobic ionic liquid trihexyltetradecylphosphonium chloride as a binder. It has been shown that AgPs exhibit a strong electrocatalytic effect on the nitrite oxidation. For optimal electroanalytical performance the electrode was conditioned via silver oxidation/reduction cycle. The electrode revealed a linear square-wave voltammetric response in a wide examined concentration range of 0.05 to 1.0 mmol L-1, limit of detection (LOD) of 3 mu mol L-1 and excellent repeatability with RSD of 0.3%. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：45 / 48
页数：4
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