A carbon-supported BiSn nanoparticles based novel sensor for sensitive electrochemical determination of Cd (II) ions

被引：26
|
作者：
Chen, Yongjia [1 ]
Zhang, Dongtang [1 ]
Wang, Dumei [1 ]
Lu, Liping [1 ]
Wang, Xiayan [1 ]
Guo, Guangsheng [1 ]
机构：
[1] Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
来源：
TALANTA | 2019年 / 202卷
基金：
中国国家自然科学基金;
关键词：
Carbon-supported BiSn nanoparticles; Cadmium(II); Electrochemical detection; Differential pulse anodic stripping voltammetry; Sensor; HEAVY-METAL IONS; FILM ELECTRODE; VOLTAMMETRIC DETERMINATION; ONLINE PRECONCENTRATION; SEQUENTIAL INJECTION; PASTE ELECTRODE; WATER; NANOTUBES; CADMIUM; LEAD;
D O I：
10.1016/j.talanta.2019.04.066
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel sensor based on carbon supported BiSn alloy nanoparticles (BiSn@C) was prepared for the sensitive detection of Cd2+. The BiSn@C and Nafion modified glassy carbon electrode (GCE) exhibited improved electrochemical performance in Cd2+ detection, because of its large specific surface area, abundance of active sites, good electrical conductivity, and strong cation exchange ability. Under the optimum conditions, the fabricated sensor showed good linearity of its response from 0.01 mu mol/L to 30 mu mol/L for the detection of Cd2+ and a limit of detection (LOD) of 3 nmol/L, which is considerably lower than the limit specified for safe drinking water as guided by the World Health Organization. The Nafion/BiSn@C/GCE was successfully applied for determination for trace Cd2+ in river samples with satisfying recoveries using the standard addition method.
引用
收藏
页码：27 / 33
页数：7
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