Ultrasensitive non-enzymatic electrochemical sensing of glucose in noninvasive samples using interconnected nanosheets-like NiMnO3 as a promising electrocatalyst

2019 ◽  
Vol 299 ◽  
pp. 126974 ◽  
Author(s):  
Paramasivam Balasubramanian ◽  
Muthaiah Annalakshmi ◽  
Shen-Ming Chen ◽  
Tse-Wei Chen
Keyword(s):  
Electrochemical Sensing ◽  
Noninvasive Samples

Electrochemical Sensing System for Detection of Tricresyl-phosphate

2011 ◽  
Author(s):  
Xiaoyun Yang ◽  
Ruel Overfelt ◽  
Alice Zitova ◽  
Aleksandr Simonian ◽  
Jeffrey Kirsch ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Tricresyl Phosphate ◽  
Sensing System

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 Simultaneous electrochemical sensing of dihydroxy benzene isomers at cost-effective allura red polymeric film modified glassy carbon electrode

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Pattan-Siddappa Ganesh ◽  
Ganesh Shimoga ◽  
Seok-Han Lee ◽  
Sang-Youn Kim ◽  
Eno E. Ebenso
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Limit Of Detection ◽  
Tap Water ◽  
Differential Pulse ◽  
Oxidation Potential ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Buffer Solution ◽  
Allura Red

Abstract Background A simple and simultaneous electrochemical sensing platform was fabricated by electropolymerization of allura red on glassy carbon electrode (GCE) for the interference-free detection of dihydroxy benzene isomers. Methods The modified working electrode was characterized by electrochemical and field emission scanning electron microscopy methods. The modified electrode showed excellent electrocatalytic activity for the electrooxidation of catechol (CC) and hydroquinone (HQ) at physiological pH of 7.4 by cyclic voltammetric (CV) and differential pulse voltammetric (DPV) techniques. Results The effective split in the overlapped oxidation signal of CC and HQ was achieved in a binary mixture with peak to peak separation of 0.102 V and 0.103 V by CV and DPV techniques. The electrode kinetics was found to be adsorption-controlled. The oxidation potential directly depends on the pH of the buffer solution, and it witnessed the transfer of equal number of protons and electrons in the redox phenomenon. Conclusions The limit of detection (LOD) for CC and HQ was calculated to be 0.126 μM and 0.132 μM in the linear range of 0 to 80.0 μM and 0 to 110.0 μM, respectively, by ultra-sensitive DPV technique. The practical applicability of the proposed sensor was evaluated for tap water sample analysis, and good recovery rates were observed. Graphical abstract Electrocatalytic interaction of ALR/GCE with dihydroxy benzene isomers.

Biocompatible peptide hydrogels with excellent antibacterial and catalytic properties for electrochemical sensing application

2021 ◽  
Vol 1154 ◽  
pp. 338295
Author(s):  
Wenqi Wang ◽  
Rui Han ◽  
Kai Tang ◽  
Shuju Zhao ◽  
Caifeng Ding ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Electrochemical Sensing ◽  
Sensing Application ◽  
Peptide Hydrogels

scholarly journals Paper-Based Competitive Immunochromatography Coupled with an Enzyme-Modified Electrode to Enable the Wireless Monitoring and Electrochemical Sensing of Cotinine in Urine

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1659
Author(s):  
Nutcha Larpant ◽  
Pramod K. Kalambate ◽  
Tautgirdas Ruzgas ◽  
Wanida Laiwattanapaisal
Keyword(s):  
Glucose Oxidase ◽  
Modified Electrode ◽  
Near Field ◽  
Electrochemical Measurement ◽  
Electrochemical Sensing ◽  
Urine Samples ◽  
Lateral Flow Strip ◽  
Wireless Monitoring ◽  
Sensing Platform ◽  
Combined Strategy

This paper proposes a combined strategy of using paper-based competitive immunochromatography and a near field communication (NFC) tag for wireless cotinine determination. The glucose oxidase labeled cotinine antibody specifically binds free cotinine in a sample, whereas the unoccupied antibody attached to BSA-cotinine at the test line on a lateral flow strip. The glucose oxidase on the strip and an assistant pad in the presence of glucose generated H2O2 and imposed the Ag oxidation on the modified electrode. This enabled monitoring of immunoreaction by either electrochemical measurement or wireless detection. Wireless sensing was realized for cotinine in the range of 100–1000 ng/mL (R2 = 0.96) in PBS medium. Undiluted urine samples from non-smokers exhibited an Ag-oxidation rate three times higher than the smoker’s urine samples. For 1:8 diluted urine samples (smokers), the proposed paper-based competitive immunochromatography coupled with an enzyme-modified electrode differentiated positive and negative samples and exhibited cotinine discrimination at levels higher than 12 ng/mL. This novel sensing platform can potentially be combined with a smartphone as a reader unit.

Serotonin level as a potent diabetes biomarker based on electrochemical sensing: a new approach in a zebra fish model

2021 ◽  
Author(s):  
Kamyar Khoshnevisan ◽  
Hadi Baharifar ◽  
Farzad Torabi ◽  
Mahsa Sadeghi Afjeh ◽  
Hassan Maleki ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Serotonin Level ◽  
Zebra Fish ◽  
New Approach ◽  
Fish Model
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