scholarly journals An Electrochemical Sensor Based on Reduced Graphene Oxide Modified Carbon Paste Electrode for Curcumin Determination in Human Blood Serum

2020 ◽  
Vol 38 (1) ◽  
pp. 29-42 ◽  
Author(s):  
M Rahimnejad ◽  
R Zokhtareh ◽  
A A Moghadamnia ◽  
M Asghary
Keyword(s):  
Graphene Oxide ◽  
Blood Serum ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Human Blood ◽  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Reduced Graphene ◽  
Paste Electrode

scholarly journals A Novel Reduced Graphene Oxide Modified Carbon Paste Electrode for Potentiometric Determination of Trihexyphenidyl Hydrochloride in Pharmaceutical and Biological Matrices

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 2955
Author(s):  
Josip Radić ◽  
Maša Buljac ◽  
Boštjan Genorio ◽  
Ema Gričar ◽  
Mitja Kolar
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Carbon Paste Electrode ◽  
Anticholinergic Drug ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Experimental Conditions ◽  
Electroactive Material ◽  
Reduced Graphene ◽  
Paste Electrode

A novel promising carbon paste electrode with excellent potentiometric properties was prepared for the analysis of trihexyphenidyl hydrochloride (THP), the acetylcholine receptor and an anticholinergic drug in real samples. It contains 10.2% trihexyphenidy-tetraphenylborate ionic pair as the electroactive material, with the addition of 3.9% reduced graphene oxide and 0.3% of anionic additive into the paste, which consists of 45.0% dibutylphthalate as the solvent mediator and 40.6% graphite. Under the optimized experimental conditions, the electrode showed a Nernstian slope of 58.9 ± 0.2 mV/decade with a regression coefficient of 0.9992. It exhibited high selectivity and reproducibility as well as a fast and linear dynamic response range from 4.0 × 10−7 to 1.0 × 10−2 M. The electrode remained usable for up to 19 days. Analytical applications showed excellent recoveries ranging from 96.8 to 101.7%, LOD was 2.5 × 10−7 M. The electrode was successfully used for THP analysis of pharmaceutical and biological samples.

A novel sensor for sensitive determination of atropine based on a Co3O4-reduced graphene oxide modified carbon paste electrode

2015 ◽  
Vol 39 (5) ◽  
pp. 3875-3881 ◽  
Author(s):  
Hasan Bagheri ◽  
Seyedeh Maryam Arab ◽  
Hosein Khoshsafar ◽  
Abbas Afkhami
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Carbon Paste Electrode ◽  
Electrochemical Determination ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Reduced Graphene ◽  
Sensitive Determination ◽  
Paste Electrode

Co3O4-reduced graphene oxide acted as a selective and sensitive modifier in a sensing layer for electrochemical determination of atropine.

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