Application of chelate-forming resin and modified glassy carbon electrode for selective determination of iron(III) by liquid chromatography with electrochemical detection

1987 ◽  
Vol 59 (23) ◽  
pp. 2776-2780 ◽  
Author(s):  
Pawel J. Kulesza ◽  
Krystyna. Brajter ◽  
Ewa. Dabek-Zlotorzynska
Keyword(s):  
Liquid Chromatography ◽  
Glassy Carbon Electrode ◽  
Electrochemical Detection ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Selective Determination

Self-Assembled Hybrid Films of Graphene/Carbon Nanotube Modified Electrode for Sensitive and Selective Determination of Rutin

2012 ◽  
Vol 531 ◽  
pp. 419-422 ◽  
Author(s):  
Zong Hua Wang ◽  
Shu Yan Yao ◽  
Jian Fei Xia ◽  
Fei Fei Zhang ◽  
Xin Mei Guo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Rapid Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Hybrid Films ◽  
Selective Determination

Abstract: Graphene/Carbon Nanotube hybrid films modified glassy carbon electrode (GN-CNT/GC) was fabricated as electrochemical sensor for the sensitive and rapid determination of rutin. The electrochemical behaviors of rutin at the GN-CNT/GC have been investigated. Rutin can generate a pair of well-defined redox peaks at the GN-CNT/GC located at 0.450 V (Epa) and 0.409 V (Epc). Compared with graphene modified glassy carbon electrode (GN/GC) and carbon nanotube modified glassy carbon electrode (CNT/GC), GN-CNT/GC showed a higher catalytic activity toward rutin. This result indicates that the GN-CNT hybrid films as a modifier strengthens the adsorption of rutin. Cyclic voltammetry (CV), different pulse voltammetry (DPV) and transmission electron microscopy (TEM) were employed to characterize the electrochemical sensor and hybrid films. Under the optimal conditions, the oxidation peak current is linear to the rutin concentration over the range of 2.0×10-7-6.0×10-5 M and the detection limits were 1.0×10-7 M.

Sign in / Sign up

Export Citation Format

Share Document