Simultaneous Determination of Hydroquinone and Catechol at a Glassy Carbon Electrode Modified with Multiwall Carbon Nanotubes

2005 ◽  
Vol 17 (10) ◽  
pp. 832-838 ◽  
Author(s):  
Honglan Qi ◽  
Chengxiao Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Simultaneous Determination ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Multiwall Carbon Nanotubes ◽  
Carbon Electrode ◽  
Multiwall Carbon

Multiwall Carbon Nanotubes-Modified Glassy Carbon Electrode for Square-Wave Stripping Voltammetric Determination of Aqueous Antimony (III) Ion

2012 ◽  
Vol 518-523 ◽  
pp. 1571-1575 ◽  
Author(s):  
Yao Guang Guo ◽  
Wei Yan ◽  
Xiao Yi Lou ◽  
Dong Xue Xiao ◽  
Ping Zhai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Multiwall Carbon Nanotubes ◽  
Deposition Potential ◽  
Carbon Electrode ◽  
Experimental Conditions ◽  
Square Wave ◽  
Multiwall Carbon

A glassy carbon electrode (GCE) modified with multiwall carbon nanotubes (MWCNTs) for electrochemical square-wave stripping voltammetric (SWV) determination of antimony (III) was introduced. Various experimental parameters, such as the amounts of carbon nanotubes, the deposition potential and time, the electrolyte solution, etc, were thoroughly optimized and discussed. Under the optimum experimental conditions, the MWCNTs-modified GCE exhibited well linear behaviour in the antimony(III) concentration range from 0.04 to 0.26 mg/L (R=0.9983) with a detection limit of 3.20×10-4mg/L (S/N=3) under a 360 s accumulation. The proposed electrode also exhibited encouraging properties for measurements of simulated water samples.

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