Simultaneous and selective electrochemical sensing of methotrexate and folic acid in biological fluids and pharmaceutical samples using Fe3O4/ppy/Pd nanocomposite modified screen printed graphite electrode

Chemosphere ◽  
2021 ◽  
pp. 132736
Author(s):  
Somayeh Tajik ◽  
Hadi Beitollahi ◽  
Saeed Shahsavari ◽  
Fariba Garkani Nejad
Keyword(s):  
Folic Acid ◽  
Graphite Electrode ◽  
Biological Fluids ◽  
Electrochemical Sensing ◽  
Pharmaceutical Samples ◽  
Screen Printed

Electrochemical Sensing of Pioglitazone Hydrochloride on N-doped r-GO Modified Commercial Electrodes

The Analyst ◽  
2021 ◽  
Author(s):  
Ashish Kumar ◽  
Sanjay K. Srivastava ◽  
Monika Srivastava ◽  
Rajiv Prakash
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Graphite Electrode ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Screen Printed

This manuscript explains the determination of commercially available pioglitazone hydrochloride (PIOZ) tablet on nitrogen (N)doped r-GO (Nr-GO) modified commercial glassy carbon electrode (GCE) and commercial screen printed graphite electrode (SPGE)....

scholarly journals Electrochemical sensing platform for simultaneous detection of 6-mercaptopurine and 6-thioguanine using RGO-Cu2O/Fe2O3 modified screen-printed graphite electrode

2021 ◽  
Author(s):  
Fatemeh Irannezhad ◽  
Jamileh Seyed-Yazdi ◽  
Seyedeh Hoda Hekmatara
Keyword(s):  
Dynamic Range ◽  
Graphite Electrode ◽  
Limit Of Detection ◽  
Simultaneous Detection ◽  
Differential Pulse ◽  
Electrochemical Sensing ◽  
X Ray Diffraction ◽  
Sensing Platform ◽  
Facile Fabrication ◽  
Screen Printed

A sensitive electrochemical sensor was developed using reduced graphene oxide RGO-Cu2O/Fe2O3 nanocomposite for 6-mercaptopurine detection based on a facile fabrication method. The surface morphology and structural composition of this nanocomposite was evaluated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Fourier transform infrared (FT-IR) spectroscopy. The screen-printed graphite electrode (SPGE) modified with RGO-Cu2O/Fe2O3 nanocomposite (RGO-Cu2O/Fe2O3/SPGE) indicated excellent electrochemical properties to detect 6-mercaptopurine. The linear dynamic range was estimated between 0.05 and 400.0 μM for 6-mercaptopurine detection, with a limit of detection of 0.03 μM. Also, RGO-Cu2O/Fe2O3/SPGE sensor showed good activity for simultaneous detection of 6-mercaptopurine and 6-thioguanine. In the coexistence system of 6-mercaptopurine and 6-thioguanine, two clear and well-isolated voltammetric peaks were obtained by differential pulse voltammetry (DPV). Additionally, the proposed sensor was examined for applicability by determining 6-mercaptopurine and 6-thioguanine in real samples, and the recovery in the range of 97.5-103.0 % was obtained.

Electrochemical sensing of Sudan I using the modified graphite screen-printed electrode

2020 ◽  
pp. 1-14
Author(s):  
Somayeh Tajik ◽  
Hadi Beitollahi ◽  
Fariba Garkani Nejad ◽  
Mohadeseh Safaei ◽  
Peyman Mohammadzadeh Jahani
Keyword(s):  
Electrochemical Sensing ◽  
Screen Printed Electrode ◽  
Sudan I ◽  
Screen Printed

scholarly journals Electrochemical sensing of total sulphites in beer using non-modified screen-printed carbon electrodes

2017 ◽  
Vol 123 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Rui M. Ramos ◽  
Pedro F. Brandão ◽  
Luís M. Gonçalves ◽  
Vlastimil Vyskočil ◽  
José A. Rodrigues
Keyword(s):  
Electrochemical Sensing ◽  
Carbon Electrodes ◽  
Screen Printed
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