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Citation: GUO Xianhou, WNAG Xueliang, YU Zhangyu. Determination of Epinephrine by Graphene/Platinum Nanoparticle Hybrid Membrane Modified Electrode[J]. Chinese Journal of Applied Chemistry, ;2014, 31(12): 1465-1471. doi: 10.3724/SP.J.1095.2014.30612 shu

Determination of Epinephrine by Graphene/Platinum Nanoparticle Hybrid Membrane Modified Electrode

GUO Xianhou ^a,b ,
WNAG Xueliang ^a ,
YU Zhangyu ^a,c,,

1.
a Department of Chemistry and Chemical Engineering, Heze University, Heze 274015, China;
2.
b Hongda Chemical Engineering Co., Ltd., Zhaozhuang Mining Group, Tengzhou, 277500, China;
3.
cJining University, Qvfu 273165, China

Corresponding author: YU Zhangyu,
Received Date: 3 December 2013
Available Online: 23 April 2014
Fund Project: 国家自然科学基金(21105023) (21105023)山东省自然科学基金(BS2013HZ027,ZR2009BM003)资助项目 (BS2013HZ027,ZR2009BM003)

Graphene/platinum nanoparticles hybrid membrane modified electrode was prepared by cyclic voltammetry(CV).The electrochemical behaviors of epinephrine(EP) were studied on this modified electrode,and an electrochemical method for determination of EP was developed.The morphology and the electrochemical properties of the modified electrode were characterized by scan electron microscopy(SEM) and cyclic voltammetry,respectively.The conditions that influence the electrochemical properties of the modified electrode during the preparation processes and the conditions for determination of EP were optimized.Experimental results show that the modified electrode has excellent catalytic properties for the redox of EP.In the Na₂HPO₄-citric acid buffer solution(pH=5.0),the oxidative peak current of EP is linear with its concentration in the range of 4.4×10^-8~2.2×10^-6 mol/L.The linear regressive equation is i_pa(10 A)=0.0753c(mol/L)+3.7653×10^-5 with r=0.9989,and the detection limit of 2.0×10^-9 mol/L(S/N=3).The modified electrode shows good reproducibility,high sensitivity and selectivity.It could be used for determination of the content of EP in real samples.
- graphene,
- platinum nanoparticle,
- hybrid material,
- epinephrine,
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