Potentiometric determination of urinary iodide using a nanoparticle modified carbon paste electrode

被引：4
|
作者：
Wang, Ning [1 ]
Wang, Fenfen [1 ]
Liao, Yeting [1 ]
Liu, Huanhuan [1 ]
Li, Yijun [1 ,2 ]
He, Xiwen [1 ]
机构：
[1] Nankai Univ, Tianjin Key Lab Biosensing & Mol Recognit, Coll Chem, Tianjin 300071, Peoples R China
[2] Nankai Univ, Natl Demonstrat Ctr Expt Chem Educ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300071, Peoples R China
来源：
ANALYTICAL METHODS | 2017年 / 9卷 / 21期
关键词：
SELECTIVE ELECTRODE; MASS-SPECTROMETRY; ACTIVE COMPONENTS; COMPLEX MATRICES; SENSOR; SILVER; DEFICIENCY; SULFIDE; ELECTROPHORESIS; FLUORESCENCE;
D O I：
10.1039/c7ay00358g
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple and sensitive solid carbon paste electrode (CPE) based on the nanoparticles of silver iodide and silver sulfide was prepared for potentiometric determination of iodide in urine samples. The results indicated that the provided CPE exhibited a wide linear range (8.0 x 10(-9) to 1.0 x 10(-3) mol L-1), low detection limit (7.0 x 10(-9) mol L-1), near Nernstian sensitivity (55.3 mV per decade) and short response time (<60 s) to iodide. The provided CPE was successfully applied for the determination of iodide in human urine samples with good stability and repeatability.
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页码：3159 / 3165
页数：7
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