Determination of isoniazid content via cysteic acid/graphene modified glassy carbon electrode

2015 ◽  
Vol 7 (2) ◽  
pp. 793-798 ◽  
Author(s):  
Xiaojing Si ◽  
Lin Jiang ◽  
Xinyue Wang ◽  
Yaping Ding ◽  
Liqiang Luo
Keyword(s):  
Detection Limit ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrochemical Method ◽  
Cysteic Acid ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode

The electrodeposited graphene (EGR) and cysteic acid (CA) composite (CA/EGR) was fabricated through an electrochemical method for the modification of glassy carbon electrode (GCE). The obtained detection linearity of isoniazid at the CA/EGR/GCE ranged from 0.1 to 200 μM with the detection limit of 0.03 μM (S/N = 3).

A Novel Electrochemical Sensor for the Analysis of Salbutamol in Pork Samples by Using NiFe2O4 Nanoparticles Modified Glassy Carbon Electrode

2013 ◽  
Vol 850-851 ◽  
pp. 1279-1282 ◽  
Author(s):  
Su Xing Luo ◽  
Yuan Hui Wu ◽  
Hua Gou ◽  
Yan Liu
Keyword(s):  
Detection Limit ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrochemical Method ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Peak Current ◽  
Anodic Peak Current ◽  
Pork Samples

In this work, a simple and sensitive electrochemical method sensor was developed to determine salbutamol based on magnetic NiFe2O4nanoparticles modified glassy carbon electrode. It was found the anodic peak current of salbutamol was linear with the concentration of salbutamol from 2.0 μM to 60 μM with a detection limit of 1.0 μM (S/N=3). The developed method was successfully applied to determine salbutamol content in pork samples with satisfactory results.

Determination of melamine based on electrochemiluminescence of Ru(bpy)32+ at chemically converted graphene-modified glassy carbon electrode

RSC Advances ◽  
2014 ◽  
Vol 4 (64) ◽  
pp. 34003-34007 ◽  
Author(s):  
Fengyu Liu ◽  
Yulong Gao ◽  
Wei Li ◽  
Jiantao Shao
Keyword(s):  
Detection Limit ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Chemically Converted Graphene

In this paper, electrochemiluminescence (ECL) of Ru(bpy)32+ at chemically converted graphene (CCG)-modified glassy carbon (GC) electrode has been employed for the determination of melamine in milk with a remarkable detection limit of 5.0 × 10−15 mol L−1.

Self-Assembled Graphene for Determination of Catechol in Wastewater at Modified Glassy Carbon Electrode

2012 ◽  
Vol 161 ◽  
pp. 255-259 ◽  
Author(s):  
Mei Feng Chen ◽  
Xin Ying Ma ◽  
Xia Li
Keyword(s):  
Cyclic Voltammetry ◽  
Detection Limit ◽  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
High Sensitivity ◽  
Carbon Electrode ◽  
Oxidation Peak ◽  
Modified Glassy Carbon Electrode

Graphene-modified glassy carbon electrode was made by dropping. In phosphate-citric acid buffered saline, the modified electrode was shown to possess an excellent selective electrocatalytical effect on the redox of catechol, and further used to determine catechol in the presence of resorcin and hydroquinone by cyclic voltammetry. The oxidation peak currents Ipa showed a linear relationship with the concentrations (c) of catechol in the range of 2.97×10-7 mol•L-1~9.31×10-6 mol•L-1 and 9.31×10-6 mol•L-1~1.03×10-4 mol•L-1 with a correlation coefficient as follows: Ipa1(A)= -4.10×10-6-2.31c, R=0.Superscript text9971; Ipa2 (A) =-1.50×10-5-0.60c, R=0.9953, respectively, and the detection limit is 2.50×10-8 mol•L-1. The modified electrode is high sensitivity, selectivity, stability, and has been successfulSuperscript textly applied to analyzing catechol in wastewater.

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