Laser activated voltammetry: application to the determination of phenol in aqueous solution at a glassy carbon electrode

The Analyst ◽  
2000 ◽  
Vol 125 (3) ◽  
pp. 531-534 ◽  
Author(s):  
Qiu Fulian ◽  
Richard G. Compton
Keyword(s):  
Aqueous Solution ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode

An electrochemically aminated glassy carbon electrode for simultaneous determination of hydroquinone and catechol

The Analyst ◽  
2016 ◽  
Vol 141 (3) ◽  
pp. 1077-1082 ◽  
Author(s):  
Xiuyun Wang ◽  
Min Xi ◽  
Mengmeng Guo ◽  
Fangmeng Sheng ◽  
Guang Xiao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Simultaneous Determination ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Ammonium Carbamate ◽  
Simple Strategy

A simple strategy based on the easy modification of GCE by pre-electrolyzing it in ammonium carbamate aqueous solution was employed for the simultaneous determination of HQ and CC.

Simultaneous Determination of Epinephrine and Tyrosine Using a Glassy Carbon Electrode Amplified with ZnO-Pt/CNTs Nanocomposite

2019 ◽  
Vol 15 (2) ◽  
pp. 166-171 ◽  
Author(s):  
Ali Samadzadeh ◽  
Iran Sheikhshoaie ◽  
Hassan Karimi-Maleh
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Simultaneous Analysis ◽  
Urine Samples ◽  
Carbon Electrode ◽  
Linear Dynamic ◽  
Biological Compounds ◽  
Blood And Urine Samples ◽  
Human Blood And Urine

Background: Simultaneous analysis of epinephrine and tyrosine as two effective and important biological compounds in human blood and urine samples are very important for the investigation of human health. Objective: In this research, a highly effective voltammetric sensor fabricated for simultaneous analysis of epinephrine and tyrosine. The sensor was fabricated by the modification of glassy carbon electrode with ZnO-Pt/CNTs nanocomposite (ZnO-Pt/CNTs/GCE). The synthesized nanocomposite was characterized by SEM method. The ZnO-Pt/CNTs/GCE showed two separated oxidation signals at potential ~220 mV and 700 mV for epinephrine and tyrosine, respectively. Also, we detected linear dynamic ranges 0.5-250.0 µM and 1.0-220 µM with a limit of detections 0.1 µM and 0.5 µM for the determination of epinephrine and tyrosine, respectively. The ZnO-Pt/CNTs/GCE was used for the determination of epinephrine and tyrosine in blood serum and human urine samples.

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