A Hydrogen Peroxide Biosensor Based on Room Temperature Ionic Liquid Functionalized Graphene Modified Carbon Ceramic Electrode

2010 ◽  
Vol 28 (12) ◽  
pp. 2507-2512 ◽  
Author(s):  
Yaping He ◽  
Jianbin Zheng ◽  
Kuangtian Li ◽  
Qinglin Sheng ◽  
Ningqiang Qiao
Keyword(s):  
Hydrogen Peroxide ◽  
Ionic Liquid ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Functionalized Graphene ◽  
Carbon Ceramic Electrode ◽  
Hydrogen Peroxide Biosensor ◽  
Carbon Ceramic

Electrochemical Behavior and Voltammetric Determination of Losartan Using Carbon Ceramic Electrode Modified with Room Temperature Ionic Liquid

2020 ◽  
Vol 18 (4) ◽  
pp. 322-327
Author(s):  
Mahzad Firouzi ◽  
Masoud Giahi ◽  
Mostafa Najafi ◽  
Seyed Saied Homami ◽  
Seyed Husain Hashemi Mousavi
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Dynamic Range ◽  
Electrochemical Impedance ◽  
Linear Sweep Voltammetry ◽  
Pharmaceutical Formulations ◽  
Room Temperature Ionic Liquid ◽  
Carbon Ceramic Electrode ◽  
Carbon Ceramic

Herein, an electrochemical sensor has been proposed for the determination of losartan (LOS) in pharmaceutical formulations. A room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM.PF6) was applied to fabricate a modified carbon ceramic electrode (IL-CCE). The electrochemical studies were performed by the cyclic and linear sweep voltammetry (CV and LSV), chronoamperometry and electrochemical impedance spectroscopy (EIS) techniques. The anodic peak currents were increased with the LOS concentration and indicated a linear dynamic range from 20 to 200 μM and a detection limit of 11.7 μM (S/N = 3) under the optimized conditions. Satisfactory results were obtained by analysis of LOS in pharmaceutical tablets.

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