Anodic stripping voltammetry of silver(I) using a carbon paste electrode modified with multi-walled carbon nanotubes

被引:1
|
作者
Shokoofe Jahandari
Mohammad Ali Taher
Hamid Fazelirad
Iran Sheikhshoai
机构
[1] Shahid Bahonar University of Kerman,Department of Chemistry
[2] Shahid Bahonar University of Kerman,Young Researchers Society
来源
Microchimica Acta | 2013年 / 180卷
关键词
Carbon nanotube; Anodic stripping voltammetry; Modified carbon paste electrode; Silver(I);
D O I
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中图分类号
学科分类号
摘要
We describe a silver(I)-selective carbon paste electrode modified with multi-walled carbon nanotubes and a silver-chelating Schiff base, and its electrochemical response to Ag(I). Effects of reduction potential and time, accumulation time, pH of the solution and the stripping medium were studied by differential pulse anodic stripping voltammetry and optimized. The findings resulted in a method for the determination of silver over a linear response range (from 0.5 to 235 ng mL−1) and with a detection limit as low as 0.08 ng mL−1. The sensor displays good repeatability (with the RSD of ± 2.75 % for 7 replicates) and was applied to the determination of Ag(I) in water samples and X-ray photographic films.
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页码:347 / 354
页数:7
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