Sensitive Stripping Determination of Cadmium(II) and Lead(II) on Disposable Graphene Modified Screen-Printed Electrode

被引：38
|
作者：
Chao Huangfu [1 ]
Fu, Liang [1 ]
Li, Yuzhi [1 ]
Li, Xueling [2 ]
Du, Haijun [3 ]
Ye, Jianshan [1 ]
机构：
[1] S China Univ Technol, Coll Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China
[2] Guangzhou Ingsens Sensor Technol Co Ltd, Guangzhou 510530, Guangdong, Peoples R China
[3] Guizhou Minzu Univ, Coll Chem & Environm Sci, Kueiyang 550025, Guizhou, Peoples R China
来源：
ELECTROANALYSIS | 2013年 / 25卷 / 09期
关键词：
Graphene; Screen-printed electrodes; Poly(sodium 4-styrenesulfonate); Bismuth; Stripping voltammetry; COMPOSITE FILM ELECTRODE; HEAVY-METAL IONS; ELECTROCHEMICAL DETECTION; TRACE-METALS; CARBON ELECTRODES; TAP WATER; VOLTAMMETRY; OXIDE; NANOCOMPOSITES; ARSENIC(III);
D O I：
10.1002/elan.201300239
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In the present work, a sensitive, facile and disposable sensing platform for trace analysis of heavy metal ions was developed at the Bi modified graphene-poly(sodium 4-styrenesulfonate) composite film screen printed electrode (GR/PSS/Bi/SPE). The GR/PSS/Bi/SPE improved sensitivity and linearity due to the functionalization of graphene with negatively charged PSS providing more absorbing sites. The detection limit of the GR/PSS/Bi/SPE is found to be 0.042 mu gL(-1) for Cd2+ and 0.089 mu gL(-1) for Pb2+ with linear responses of Cd2+ and Pb2+ in the range of 0.5-120 mu gL(-1). Finally, the practical application was confirmed in real water with satisfactory results.
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页码：2238 / 2243
页数：6
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