A ZnO–RGO-modified electrode coupled to microwave digestion for the determination of trace cadmium and lead in six species fish

2017 ◽  
Vol 9 (30) ◽  
pp. 4418-4424 ◽  
Author(s):  
Wen Zhang ◽  
Yiwei Xu ◽  
Xiaobo Zou
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Microwave Digestion ◽  
Zno Nanoparticle ◽  
Reduced Graphene ◽  
Cadmium And Lead ◽  
Trace Cadmium

Herein, a composite of a ZnO nanoparticle and reduced graphene oxide (RGO) was employed as a sensing interface in a practical electrode for the determination of cadmium (Cd2+) and lead (Pb2+).

scholarly journals Simultaneous Determination of Uric Acid and Xanthine Using a Poly(Methylene Blue) and Electrochemically Reduced Graphene Oxide Composite Film Modified Electrode

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Gen Liu ◽  
Wei Ma ◽  
Yan Luo ◽  
Deng-ming Sun ◽  
Shuang Shao
Keyword(s):  
Methylene Blue ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Composite Film ◽  
Simultaneous Determination ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide

Poly(methylene blue) and electrochemically reduced graphene oxide composite film modified electrode (PMB-ERGO/GCE) was successfully fabricated by electropolymerization and was used for simultaneous determination of uric acid (UA) and xanthine (Xa). Based on the excellent electrocatalytic activity of PMB-ERGO/GCE, the electrochemical behaviors of UA and Xa were studied by cyclic voltammetry (CV) and square wave voltammetry (SWV). Two anodic sensitive peaks at 0.630 V (versus Ag/AgCl) for UA and 1.006 V (versus Ag/AgCl) for Xa were given by CV in pH 3.0 phosphate buffer. The calibration curves for UA and Xa were obtained in the range of 8.00 × 10−8~4.00 × 10−4 M and 1.00 × 10−7~4.00 × 10−4 M, respectively, by SWV. The detection limits for UA and Xa were3.00×10-8 M and5.00×10-8 M, respectively. Finally, the proposed method was applied to simultaneously determine UA and Xa in human urine with good selectivity and high sensitivity.

scholarly journals A Voltammetric Sensor Based on MgFe2 O4 Decorated on Reduced Graphene Oxide-modified Electrode for Sensitive and Simultaneous Determination of Catechol and Hydroquinone

2018 ◽  
Vol 30 (11) ◽  
pp. 2620-2627 ◽  
Author(s):  
Miloš Ognjanović ◽  
Dalibor M. Stanković ◽  
Martin Fabián ◽  
Aleksandar Vukadinović ◽  
Željko Prijović ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Simultaneous Determination ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Voltammetric Sensor ◽  
Reduced Graphene
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