Electrochemical behavior and simultaneous determination of dihydroxybenzene isomers at a functionalized SBA-15 mesoporous silica modified carbon paste electrode

2011 ◽  
Vol 56 (5) ◽  
pp. 1981-1987 ◽  
Author(s):  
Xin Zhang ◽  
Shuo Duan ◽  
Xiaomeng Xu ◽  
Shuai Xu ◽  
Changli Zhou
Keyword(s):  
Mesoporous Silica ◽  
Simultaneous Determination ◽  
Carbon Paste Electrode ◽  
Electrochemical Behavior ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Dihydroxybenzene Isomers ◽  
Paste Electrode

scholarly journals Simultaneous Determination of Copper, Lead, and Cadmium at Hexagonal Mesoporous Silica Immobilized Quercetin Modified Carbon Paste Electrode

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Fangquan Xia ◽  
Xin Zhang ◽  
Changli Zhou ◽  
Danzi Sun ◽  
Yanmin Dong ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Simultaneous Determination ◽  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Lead And Cadmium ◽  
Paste Electrode ◽  
Determination Of Copper ◽  
Copper Lead

A new method was developed for simultaneous determination of copper, lead, and cadmium, based on their voltammetric response at a carbon paste electrode modified with hexagonal mesoporous silica (HMS) immobilized quercetin (HMS-Qu/CPE). Compared with quercetin modified carbon paste electrode (Qu/CPE) and quercetin ionic liquid modified carbon paste electrode (Qu-IL/CPE), the HMS-Qu/CPE exhibited improved selectivity and high sensitivity toward the detection of copper, lead, and cadmium. The properties of the HMS-Qu/CPE in 0.1 M HCOONa-HCl buffer solution (pH4.7) were investigated by adsorptive stripping voltammetry (ASV) and electrochemical impedance spectroscopy (EIS). The electrochemical behavior of copper, lead, and cadmium at the modified electrodes and factors affecting the preconcentration procedures were also investigated. Detection limits of 5.0, 0.8, 1.0 nM for copper, lead, and cadmium were obtained, respectively. The method is simple, fast, sensitive, and selective, and is successfully applied to soil sample.

scholarly journals Electrodeposited Bi-Au nanocomposite modified carbon paste electrode for the simultaneous determination of copper and mercury

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25794-25800 ◽  
Author(s):  
S. Sahoo ◽  
A. K. Satpati ◽  
A. V. R. Reddy
Keyword(s):  
Simultaneous Determination ◽  
Carbon Paste Electrode ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Anodic Stripping ◽  
Paste Electrode ◽  
Determination Of Copper

An analytical anodic stripping voltammetry method has been developed for the simultaneous determination of copper and mercury at ultratrace levels using the Bi–AuNP modified CPE.

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