Ultrasensitive split-type electrochemical sensing platform for sensitive determination of organophosphorus pesticides based on MnO2 nanoflower-electron mediator as a signal transduction system

2020 ◽  
Vol 412 (25) ◽  
pp. 6939-6945
Author(s):  
Yuanfang Sun ◽  
Pengyuan Xiong ◽  
Juan Tang ◽  
Zhiyao Zeng ◽  
Dianping Tang
Keyword(s):  
Signal Transduction ◽  
Organophosphorus Pesticides ◽  
Electrochemical Sensing ◽  
Signal Transduction System ◽  
Electron Mediator ◽  
Sensing Platform ◽  
Sensitive Determination

An electrochemical sensing platform amplified with a Au@Ag nanoparticle-decorated three-dimensional N-doped graphene aerogel for ultrasensitive determination of baicalein

2020 ◽  
Vol 44 (37) ◽  
pp. 15975-15982
Author(s):  
Xueliang Niu ◽  
Weili Zhang ◽  
Yan Huang ◽  
Likai Wang ◽  
Zhongfang Li ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Electrochemical Sensing ◽  
Ag Nanoparticle ◽  
Graphene Aerogel ◽  
Sensing Platform ◽  
Highly Sensitive ◽  
Signal Amplifier ◽  
Doped Graphene ◽  
Sensitive Determination

A novel electrochemical method for highly sensitive determination of baicalein was developed with Au@Ag/3DNGA as signal amplifier.

Non-enzymatic electrochemical sensing platform based on metal complex immobilized carbon nanotubes for glucose determination

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 107094-107103 ◽  
Author(s):  
Piyush Kumar Sonkar ◽  
Vellaichamy Ganesan ◽  
S. Abraham John ◽  
Dharmendra Kumar Yadav ◽  
Rupali Gupta
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Electrochemical Sensing ◽  
Glucose Determination ◽  
Sensing Platform ◽  
New Material ◽  
Sensitive Determination ◽  
Human Blood Samples ◽  
Multiwall Carbon

Nickel salophen (where salophen is N,N′-bis(salicylidene)-1,2-phenylenediamine) is immobilized on multiwall carbon nanotubes. This new material is utilized for electrocatalytic oxidization and sensitive determination of glucose in human blood samples.

Novel electroanalytical platform based on bimetallic oxide nanospheres for the sensitive determination of Rhodamine B

2014 ◽  
Vol 92 (7) ◽  
pp. 640-646 ◽  
Author(s):  
Junyong Sun ◽  
Tian Gan ◽  
Cui Yang ◽  
Zhaoxia Shi ◽  
Kejing Huang ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Rhodamine B ◽  
Differential Pulse ◽  
Food Samples ◽  
Electrochemical Sensing ◽  
Cobalt Nickel ◽  
Sensing Platform ◽  
Sensitive Determination ◽  
Cobalt Nickel Oxide

In this work, uniform cobalt and nickel bimetallic oxides were formed by calcining the carbon templates, which were then modified on a glassy carbon electrode (cobalt–nickel oxide/GCE) as a novel system for the preparation of an electrochemical sensing platform. The electrochemical oxidation behavior of Rhodamine B (RB) at the cobalt–nickel oxide/GCE was investigated using differential pulse voltammetry under optimal conditions; the high electrocatalytic activity of the modified electrode toward analysis of RB was indicated. In addition, a linear range of 0.03−1.0 μmol L–1 and a low detection limit of 5.3 nmol L–1 (S/N = 3) for RB detection were obtained. Finally, the developed method with good stability and sensitivity was successfully applied for RB determination in food samples extract.

scholarly journals Spot on Gold Nanoparticles/Silica Modified Electrode for Rapid Sensitive Determination of Dinoprostone

2019 ◽  
pp. 17-22 ◽  
Author(s):  
Shimaa A Atty ◽  
Mohammed Walash ◽  
Safaa Toubar ◽  
Maha M AbouEl-Alamin ◽  
Maha A Elabd ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Pharmaceutical Preparation ◽  
Electrochemical Sensing ◽  
Modified Carbon Paste Electrode ◽  
Official Method ◽  
Carbon Paste ◽  
Experimental Conditions ◽  
Sensing Platform ◽  
Sensitive Determination

A novel simple and selective electrochemical procedure is utilized for the determination of Dinoprostone (DIN) in drug substance and pharmaceutical preparation with good recovery and without interference with other excipient. Herein, the electrochemical sensing platform based upon preparing gold nanoparticle sensor on silica modified carbon paste electrode. The surface morphology of the modified electrode was characterized by scanning electron microscope. Different experimental conditions, including electrode composition, effect of pH and scan rate were estimated carefully by cyclic voltammetry to obtain the highest electrochemical response. By using square wave voltammetry a good linear response was obtained in the range of, 2 x 10-5-4 x10-4 mol L-1, and 2 x 10-7-1.6 x 10-4 mol L-1, with low detection limit of 5 x 10-6 mol L-1, and 4.9 x 10-8 mol L-1 by CPE and GNP/SMCPE respectively. The obtained results are in good agreement with those obtained by official method. No electrochemical method was reported before for determination of DIN. The developed method was simple, rapid, economic and challenging to green analytical chemistry.

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