Theoretical Analysis and Determination of the Heterogeneous Stability Constant of Copper(II)-Humic Acids Complex at Chemically Modified Carbon Paste Electrode

1999 ◽  
Vol 11 (3) ◽  
pp. 183-187 ◽  
Author(s):  
Chunming Wang ◽  
Bing Zhu ◽  
Hulin Li
Keyword(s):  
Stability Constant ◽  
Theoretical Analysis ◽  
Humic Acids ◽  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Chemically Modified ◽  
Paste Electrode

scholarly journals Preparation and Charactreization Selective Electrode for Determination of CopperIon(II)

2016 ◽  
Vol 5 (4) ◽  
pp. 237
Author(s):  
Salwa Fares Rassi
Keyword(s):  
Carbon Paste Electrode ◽  
Linear Response ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Selective Electrode ◽  
Chemically Modified ◽  
Diphenyl Carbazide ◽  
Nernstian Slope ◽  
Paste Electrode

<span>Achemically modified carbon paste electrode with diphenyl carbazide the potentiometric determination of Cu(II) is demonstrated. The electrode exhibits linear response to Cu(II) over a wide concentration range (9.2×10−7-5.0×10−1) with Nernstian slope of 30±0.15 mV per decade. It has a response time of about 40 s and can be used for a period of two months with good reproducibility. The detection limit of this electrode was 7.0×10−7 M. The proposed electrode shows a very good selectivity for Cu(II) over a wide variety of metal ions. This chemically modified carbon paste electrode was successfully used for the determination of Cu(II) in various water samples solution and pharmaceutical formulation</span>

Determination of trace amounts of silver with a chemically modified carbon paste electrode

1990 ◽  
Vol 229 ◽  
pp. 213-219 ◽  
Author(s):  
Peibiao Li ◽  
Zhiqiang Gao ◽  
Yuwu Xu ◽  
Guangqing Wang ◽  
Zaofan Zhao
Keyword(s):  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Chemically Modified ◽  
Paste Electrode
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