Determination of trace iodide in iodised table salt on silver sulfate-modified carbon paste electrode by differential pulse voltammetry with electrochemical solid phase nano-extraction

Talanta ◽  
2010 ◽  
Vol 80 (3) ◽  
pp. 1234-1238 ◽  
Author(s):  
Yongchun Zhu ◽  
Jingjing Guan ◽  
Lu Cao ◽  
Jie Hao
Keyword(s):  
Carbon Paste Electrode ◽  
Solid Phase ◽  
Differential Pulse ◽  
Modified Carbon Paste Electrode ◽  
Table Salt ◽  
Carbon Paste ◽  
Silver Sulfate ◽  
Pulse Voltammetry ◽  
Paste Electrode

Determination of flunitrazepam by differential-pulse voltammetry using a bentonite-modified carbon paste electrode

The Analyst ◽  
1988 ◽  
Vol 113 (11) ◽  
pp. 1719-1722 ◽  
Author(s):  
Lucas Hernández ◽  
Pedro Hernández ◽  
Manuel H. Blanco ◽  
Encarnacion Lorenzo ◽  
Engracia Alda
Keyword(s):  
Differential Pulse Voltammetry ◽  
Carbon Paste Electrode ◽  
Differential Pulse ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Pulse Voltammetry ◽  
Paste Electrode

A Novel Electrochemical Sensor Based on Au-rGO Nanocomposite Decorated with Poly(L-cysteine) for Determination of Paracetamol

2020 ◽  
Vol 16 (8) ◽  
pp. 1063-1070
Author(s):  
Lin Zhang ◽  
Xiaojing Si ◽  
Xiaoxia Yan ◽  
Haibo He ◽  
Dongmei Deng ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Differential Pulse ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Toxic Metabolites ◽  
Reduced Graphene ◽  
Excessive Intake ◽  
Pulse Voltammetry ◽  
Paste Electrode

Background: Paracetamol is a common antipyretic and analgesic drug, but its excessive intake can accumulate toxic metabolites and cause kidney and liver damage, so it is critical to determine the content of paracetamol for clinical diagnosis and dose use. Methods: Au-reduced graphene oxide (Au-rGO) nanocomposite decorated with poly(L-cysteine) on carbon paste electrode was fabricated for the determination of paracetamol. Au-rGO was first coelectrodeposited on the carbon paste electrode surface. Afterwards, L-cysteine was electropolymerized to fabricate the Au-rGO/poly(L-cysteine) modified carbon paste electrode. Scanning electron microscope was used to characterize the morphology of Au-rGO and poly(L-cysteine)/Au-rGO. The electrochemical properties of the sensor were studied by cyclic voltammetry and differential pulse voltammetry. Results: After exploring the optimal conditions, the sensor showed a wide linear response for paracetamol detection in the range of 1-200 μM with a detection limit of 0.5 μM (S/N = 3). Conclusion: The fabricated sensor demonstrated good sensitivity with rapid detection capacity in real samples.

scholarly journals Electrocatalytic determination of captopril using a carbon paste electrode modified with N-(ferrocenyl methylidene) fluorene-2-amine and graphene/ZnO nanocomposite

2019 ◽  
Vol 84 (2) ◽  
pp. 175-185 ◽  
Author(s):  
Mohadeseh Safaei ◽  
Hadi Beitollahi ◽  
Masoud Shishehbore ◽  
Somayeh Tajik ◽  
Rahman Hosseinzadeh
Keyword(s):  
Modified Electrode ◽  
Carbon Paste Electrode ◽  
Electrocatalytic Oxidation ◽  
Differential Pulse ◽  
Diagnostic Techniques ◽  
Carbon Paste ◽  
Pulse Voltammetry ◽  
Electrocatalytic Determination ◽  
Paste Electrode

A carbon paste electrode (CPE) was modified with N-(ferrocenylmethylidene) fluorene-2-amine and graphene/ZnO nanocomposite. The electrooxidation of captopril (CAP) at the surface of the modified electrode was studied using electrochemical approaches. The electrochemical study of the modified electrode, as well as its efficiency for the electrocatalytic oxidation of captopril, is described. The electrode was used to study the electrocatalytic oxidation of captopril, by cyclic voltammetry (CV), chronoamperometry (CHA) and differential pulse voltammetry (DPV) as diagnostic techniques. It has been found that the oxidation of captopril at the surface of modified electrode occurs at a potential of about 340 mV less positive than that of an unmodified CPE. DPV of captopril at the electrochemical sensor exhibited two linear dynamic ranges (0.1?100.0 and 100.0?800.0 ?M) with a detection limit (3?) of 0.05 ?M.

Direct Determination of Boscalid in Grape Samples by Differential Pulse Voltammetry using a Carbon Paste Electrode

2021 ◽  
Author(s):  
Priscila Azevedo Liberato ◽  
Leonardo Luiz Luiz Okumura ◽  
Astréa Filomena de Souza Silva ◽  
Herbert Aleixo ◽  
Júnio Gonçalves Silva ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Direct Determination ◽  
Differential Pulse ◽  
Grape Seed ◽  
Carbon Paste ◽  
Vitis Labrusca ◽  
Pulse Voltammetry ◽  
Red Grape ◽  
Paste Electrode

A new methodology to determine direct the fungicide Boscalid (BSC) was developed and successfully applied in red grape 100% juice, peel extracts, pulp and purple grape seed (Vitis labrusca L.)...

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