Development of a disposable electrochemical sensor for detection of cholesterol using differential pulse voltammetry

2018 ◽  
Vol 159 ◽  
pp. 398-405 ◽  
Author(s):  
Muhammad Azhar Hayat Nawaz ◽  
Marjan Majdinasab ◽  
Usman Latif ◽  
Muhammad Nasir ◽  
Gultekin Gokce ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Pulse Voltammetry

NiFe2O4nanoparticles decorated with MWCNTs as a selective and sensitive electrochemical sensor for the determination of epinephrine using differential pulse voltammetry

2014 ◽  
Vol 6 (17) ◽  
pp. 6885-6892 ◽  
Author(s):  
Ali A. Ensafi ◽  
F. Saeid ◽  
B. Rezaei ◽  
Ali R. Allafchian
Keyword(s):  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Modified Electrode ◽  
Electrochemical Method ◽  
Differential Pulse ◽  
Synergic Effect ◽  
Pulse Voltammetry

A new electrochemical method was developed for epinephrine detection based on NiFe2O4–MWCNT-modified electrode. The nanocomposite has a synergic effect on the oxidation of epinephrine.

scholarly journals Lanthanum Ortho-Ferrite (LaFeO3) Nano-Particles Based Electrochemical Sensor for the Detection of Dopamine

2020 ◽  
Vol 10 (5) ◽  
pp. 6182-6188
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Phosphate Buffer Solution ◽  
Differential Pulse ◽  
Nano Particles ◽  
Ferric Nitrate ◽  
Buffer Solution ◽  
Pulse Voltammetry ◽  
Modified Sensor

The perovskite type lanthanum ortho ferrite nano-particles (LaFeO3) based electrochemical sensor was developed and used to detect dopamine. For this work the lanthanum ortho ferrite nano-particles (LaFeO3) were synthesized by combustion technique using sugar and ethanolamine with lanthanum oxide and ferric nitrate. For the characterization of newly prepared lanthanum ortho ferrite nano-particles, techniques like FESEM, and TEM were used. The crystallite size was found to be 40 to 46 nm with cubic crystal structure. To check the electrochemical properties of a modified sensor electrode (LaFeO3/GP), the cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were used. During the experiment, the phosphate buffer solution having pH 6.0 was employed, maintaining the scan rate 100mVs-1 and 50mVs-1 for cyclic voltammetry and Differential pulse voltammetry, respectively.

Highly Sensitive Chitosan and ZrO2 Nanoparticles-Based Electrochemical Sensor for 8-Hydroxy-2’-deoxyguanosine Determination

2019 ◽  
Vol 15 (6) ◽  
pp. 648-655 ◽  
Author(s):  
Shengzhong Rong ◽  
Deng Pan ◽  
Xuehui Li ◽  
Mucong Gao ◽  
Hongwei Yu ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
High Performance ◽  
Differential Pulse ◽  
Redox Activity ◽  
Zro2 Nanoparticles ◽  
Urine Specimen ◽  
Experimental Conditions ◽  
Pulse Voltammetry

Background: 8-Hydroxy-2’-deoxyguanosine (8-OHdG) has been regarded as a typical stable biomarker of DNA oxidative damage, and its level is one of the criteria for early diagnosis of various diseases. Considering the significance of 8-OhdG, various analytical techniques have been used for assaying 8-OHdG but all of them suffer from basic limitations like highly expensive instrumentation, large amount of sample requirement, complicated sample pre-treatment, tedious and time-consuming procedures etc. However, electroanalytical sensors provide a faster, easy and sensitive means of analyzing. Methods: The chitosan (CS) film provided the high electrode activity and stability which is required for detecting 8-OHdG though direct electrochemical oxidation. Zirconia was employed because it has some unique properties, such as high redox activity and selectivity etc. High-performance composite was easily detected by differential pulse voltammetry at a working voltage of 0. 51 V (vs. Ag/AgCl). A rapid and sensitive electrochemical sensor based on CS and metal oxide nanocrystalline for the determination of 8-OHdG was established. Results: Under optimized experimental conditions, the peak currents of differential pulse voltammetry increased as the concentrations of 8-OHdG increased from 10 to 200 ng·mL-1. The detection limit was 3.67 ng·mL-1 which was calculated by the S/N ratio of 3. The recoveries of the real spiked samples are in the range between 93.2 to 105.3%. Conclusion: The electrochemical sensor for direct 8-OHdG determination using a new CS/zirconia composite for GCE modification was developed and showed excellent reproducibility, stability and sensitivity for the specific determination of 8-OHdG in real urine specimen.

Investigations On The Binding Of Mercury Ions To Albumins Employing Differential Pulse Voltammetry

2003 ◽  
Vol 10 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Clarissa Pires de Castro ◽  
Jurandir SouzaDe ◽  
Carlos Bloch Jr
Keyword(s):  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Mercury Ions ◽  
Pulse Voltammetry
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