scholarly journals Determination of Salicylic Acid by Differential Pulse Voltammetry Using ZnO/Al2O3 Nanocomposite Modified Graphite Screen Printed Electrode

2017 ◽  
pp. 9972-9982 ◽  
Author(s):  
Mohammad Reza Ganjali ◽  
Keyword(s):  
Salicylic Acid ◽  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Screen Printed Electrode ◽  
Pulse Voltammetry ◽  
Screen Printed

scholarly journals Electrochemical determination of tramadol using modified screen printed electrode

2021 ◽  
Author(s):  
Sayed ali Ahmadi ◽  
Sayed Zia Mohammadi ◽  
Maedeh Jafari ◽  
Peyman Mohammadzadeh Jahani ◽  
Raana Mashayekh
Keyword(s):  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Diagnostic Techniques ◽  
Electrochemical Determination ◽  
Screen Printed Electrode ◽  
Dynamic Activity ◽  
Multi Walled Carbon Nanotubes ◽  
Pulse Voltammetry ◽  
Walled Carbon Nanotubes ◽  
Screen Printed

The detection of tramadol using a screen printed electrode modified with La3+/ZnO nano-flowers and multi-walled carbon nanotubes (La3+/ZnO NFs-MWCNTs/SPE) is reported in this work. In order to examine tramadol electrochemical oxidation, the modified electrode was implemented with the utilization of differential pulse voltammetry, chronoamperometry and cyclic voltammetry as diagnostic techniques. The proposed electrode displays favorable electrocatalytic behavior concerning tramadol oxidation with an approximately 330 mV potential shift to a lesser positive potential. In the 0.5 to 800.0 μM range for tramadol, differential pulse voltammetry displays linear dynamic activity. Tramadol detection limit of 0.08 μM was derived within optimized testing conditions for this simple construction sensor. Lastly, this fabricated sensor was utilized with desirable results to determine tramadol in tramadol samples and urine samples.

scholarly journals Electrochemical Behavior and Determination of Chlorogenic Acid Based on Carbon Nanotubes Modified Screen-Printed Electrode

2016 ◽  
Author(s):  
Xiao-Yan Ma ◽  
Hong-Qiao Yang ◽  
Hua-Bing Xiong ◽  
Xiao-Fen Li ◽  
Jing-Ting Gao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Differential Pulse ◽  
Electrochemical Determination ◽  
Optimal Conditions ◽  
Linear Regression Equation ◽  
Screen Printed Electrode ◽  
Redox Peak ◽  
Pulse Voltammetry ◽  
Screen Printed

In this paper, carbon nanotubes modified screen-printed electrode (CNTs/SPE) was prepared and the CNTs/SPE was employed for the electrochemical determination of antioxidant substance Chlorogenic acids (CGAs). A pair of well-defined redox peak of CGA was observed at the CNTs/SPE in 0.10 mol∙L-1 acetic acid-sodium acetate buffer (pH 6.2) and electrode process is adsorption-controlled. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) method for the determination of CGA were proposed based on the CNTs/SPE. Under the optimal conditions, the proposed method exhibited linear ranges from 4.73×10-7 to 4.45×10-5 mol∙L-1, the linear regression equation was Ipa(µA) = 4.1993 C (mol∙L-1)+1.1039 (r = 0.9976) and the detection limit for CGA could reach 3.25×10-6 mol∙L-1. The recovery of matrine was 94.74~106.65% (RSD = 2.92%) in coffe beans. The proposed method is quick, sensitive, reliable, and can be used for the determination of CGA.

Simultaneous Determination of Cr(III) and Cr(VI) by Differential Pulse Voltammetry Using Modified Screen-Printed Carbon Electrodes in Array Mode

2010 ◽  
Vol 22 (24) ◽  
pp. 2924-2930 ◽  
Author(s):  
Ana Calvo-Pérez ◽  
Olga Domínguez-Renedo ◽  
M. Asunción Alonso-Lomillo ◽  
M. Julia Arcos-Martínez
Keyword(s):  
Differential Pulse Voltammetry ◽  
Simultaneous Determination ◽  
Differential Pulse ◽  
Carbon Electrodes ◽  
Pulse Voltammetry ◽  
Screen Printed

scholarly journals A novel vitamin B9 sensor based on modified screen-printed electrode

2020 ◽  
Author(s):  
Hamid Sarhadi ◽  
Zare Maryam
Keyword(s):  
High Stability ◽  
High Sensitivity ◽  
Differential Pulse ◽  
Current Response ◽  
Oxidation Peak ◽  
Screen Printed Electrode ◽  
Vitamin B9 ◽  
Pulse Voltammetry ◽  
Screen Printed

In the field of determination of vitamin B9 (folic acid, FA), we have described the development of a sensitive electrochemical sensor through promoting the screen-printed electrode (SPE) and taking the advantage of zinc ferrite magnetic nanoparticles (ZnFe2O4MNPs). Cyclic voltammetry (CV) experiments demonstrated the powerful activity of ZnFe2O4MNPs/SPE for electrooxidation of FA by showing the prominent oxidation peak at 600 mV vs. Ag/AgCl. By differential pulse voltammetry (DPV) measurements, a linear relation between current response and concentration of vitamin B9 was determined in the range of 1.0–100.0 µM, and detection limit is found to be 0.3 µM (S/N=3). Except high sensitivity, the developed sensor demonstrated high stability, reproducibility and repeatability, and was also successfully applied to specify FA in real samples of vitamin B9 tablets and human urine.

Determination of chromium(iii) by differential pulse stripping voltammetry at a chitosan–gold nanocomposite modified screen printed electrode

2016 ◽  
Vol 8 (5) ◽  
pp. 962-967 ◽  
Author(s):  
Shixin Wu ◽  
Nadia Chandra Sekar ◽  
Swee Ngin Tan ◽  
Hong Xie ◽  
Sum Huan Ng
Keyword(s):  
Detection Limit ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Trivalent Chromium ◽  
Screen Printed Electrode ◽  
Differential Pulse Stripping Voltammetry ◽  
Pulse Voltammetry ◽  
Gold Nanocomposites ◽  
Screen Printed

Detection of trivalent chromium with screen printed electrodes modified by chitosan–gold nanocomposites using differential pulse voltammetry (DPSV), showing a linear range from 1 to 100 μM and a detection limit of 0.4 μM (based on 3σ).

Polarographic and voltammetric determination of 6-mercaptopurine and 6-thioguanine

1986 ◽  
Vol 51 (11) ◽  
pp. 2466-2472 ◽  
Author(s):  
Jiří Barek ◽  
Antonín Berka ◽  
Ludmila Dempírová ◽  
Jiří Zima
Keyword(s):  
Detection Limit ◽  
Differential Pulse Voltammetry ◽  
Detection Limits ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Differential Pulse Polarography ◽  
Hanging Mercury Drop Electrode ◽  
Pulse Polarography ◽  
Pulse Voltammetry

Conditions were found for the determination of 6-mercaptopurine (I) and 6-thioguanine (II) by TAST polarography, differential pulse polarography and fast-scan differential pulse voltammetry at a hanging mercury drop electrode. The detection limits were 10-6, 8 . 10-8, and 6 . 10-8 mol l-1, respectively. A further lowering of the detection limit to 2 . 10-8 mol l-1 was attained by preliminary accumulation of the determined substances at the surface of a hanging mercury drop.

Sign in / Sign up

Export Citation Format

Share Document