Carbon paste electrodes modified with various carbonaceous materials for the determination of 2,4-dichlorophenoxyacetic acid by differential pulse voltammetry

The possibility of determination of chloramphenicol by differential pulse voltammetry at four different carbon paste electrodes, in the full pH range (2–12) of Britton–Robinson (BR) buffer was investigated. Electrodes were prepared by mixing spectroscopic graphite powder or glassy carbon microbeads with mineral oil (Nujol) or tricresyl phosphate. Under optimal conditions (BR buffer pH 12, the electrode prepared from glassy carbon microbeads and tricresyl phosphate), linear calibration graph was obtained only in 10–5 M chloramphenicol concentration range. Determination of lower concentrations of chloramphenicol was complicated by irreproducible peak of oxygen from the carbon paste which overlapped with peak of chloramphenicol. Addition of sodium sulfite removed the oxygen peak without influence on the peak of chloramphenicol. Under optimal conditions (electrode paste made from glassy carbon microbeads, BR buffer pH 10 and 0.5 M sodium sulfite), straight calibration line was obtained in the 10–6 and 10–5 M chloramphenicol concentration range. Limit of determination was 5 × 10–7 mol/l.

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Voltammetric Determination of Fluoren-9-ol and 2-Acetamidofluorene Using Carbon Paste Electrodes

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20050292 ◽

2005 ◽

Vol 70 (3) ◽

pp. 292-304 ◽

Cited By ~ 5

Author(s):

Natalija German ◽

Saulius Armalis ◽

Jiří Zima ◽

Jiří Barek

Keyword(s):

Differential Pulse Voltammetry ◽

Square Wave Voltammetry ◽

Limit Of Detection ◽

Differential Pulse ◽

Carbon Paste ◽

Square Wave ◽

Carbon Paste Electrodes ◽

Wave Voltammetry ◽

Pulse Voltammetry

Square wave voltammetry and differential pulse voltammetry have been used for the determination of 2-acetamidofluorene and fluoren-9-ol using carbon paste electrodes, following the study of the influence of the carbon paste composition on the voltammetric signals of the analytes. The methods are based on the oxidation of the above compounds and they include adsorptive accumulation of the analyte on the surface of the working electrode. The limit of detection was 1 μmol l-1for fluoren-9-ol in a medium of 0.1 M H2SO4, and 40 nmol l-1for 2-acetamidofluorene in Britton-Robinson buffer (pH 7).

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Determination of Carbendazim by Adsorptive Stripping Differential Pulse Voltammetry Employing Glassy Carbon Paste Electrode Modified with Graphene and Amberlite XAD 2 Resin

Electroanalysis ◽

10.1002/elan.201500080 ◽

2015 ◽

Vol 27 (8) ◽

pp. 1915-1924 ◽

Cited By ~ 9

Author(s):

Ninad G. Khare ◽

Riyaz A. Dar ◽

Ashwini K. Srivastava

Keyword(s):

Differential Pulse Voltammetry ◽

Glassy Carbon ◽

Carbon Paste Electrode ◽

Differential Pulse ◽

Carbon Paste ◽

Pulse Voltammetry ◽

Paste Electrode ◽

Glassy Carbon Paste Electrode

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DIFFERENTIAL PULSE VOLTAMMETRY FOR DETERMINATION OF PARACETAMOL AT A PUMICE MIXED CARBON PASTE ELECTRODE

Analytical Letters ◽

10.1081/al-100108420 ◽

2001 ◽

Vol 34 (15) ◽

pp. 2747-2759 ◽

Cited By ~ 18

Author(s):

Chengyin Wang ◽

Xiaoya Hu ◽

Zongzhou Leng ◽

Gongjun Yang ◽

Gendi Jin

Keyword(s):

Differential Pulse Voltammetry ◽

Carbon Paste Electrode ◽

Differential Pulse ◽

Carbon Paste ◽

Pulse Voltammetry ◽

Paste Electrode

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A graphene/ionic liquid modified selenium-doped carbon paste electrode for determination of copper and antimony

Analytical Methods ◽

10.1039/c5ay02945g ◽

2016 ◽

Vol 8 (5) ◽

pp. 1120-1126 ◽

Cited By ~ 11

Author(s):

Rong Liu ◽

Cunxi Lei ◽

Tongsheng Zhong ◽

Liping Long ◽

Zhaoyang Wu ◽

...

Keyword(s):

Ionic Liquid ◽

Differential Pulse Voltammetry ◽

Carbon Paste Electrode ◽

Differential Pulse ◽

Carbon Paste ◽

Pulse Voltammetry ◽

Paste Electrode ◽

Determination Of Copper

A graphene (GN) and ionic liquid (IL) modified selenium-doped carbon paste electrode (GN/IL/Se/CPE) was established to simultaneously determine trace Cu(ii) and Sb(iii) by differential pulse voltammetry (DPV).

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Electrochemical Behavior and Voltammetric Determination of a Manganese(II) Complex at a Carbon Paste Electrode

Analytical Chemistry Insights ◽

10.4137/aci.s32150 ◽

2016 ◽

Vol 11 ◽

pp. ACI.S32150 ◽

Cited By ~ 1

Author(s):

Sophia Karastogianni ◽

Stella Girousi

Keyword(s):

Carboxylic Acid ◽

Differential Pulse Voltammetry ◽

Carbon Paste Electrode ◽

Electrochemical Behavior ◽

Differential Pulse ◽

Carbon Paste ◽

Oxidation Reduction ◽

Pulse Voltammetry ◽

Paste Electrode

Investigation of the electrochemical behavior using cyclic voltammetry and detection of [Mn2+(thiophenyl-2-carboxylic acid)2 (triethanolamine)] with adsorptive stripping differential pulse voltammetry. The electrochemical behavior of a manganese(II) complex [Mn2+(thiophenyl-2-carboxylic acid)2(triethanolamine)] (A) was investigated using cyclic and differential pulse voltammetry in an acetate buffer of pH 4.6 at a carbon paste electrode. Further, an oxidation-reduction mechanism was proposed. Meanwhile, an adsorptive stripping differential pulse voltammetric method was developed for the determination of manganese(II) complex.

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A New Sensitive Sensor for Simultaneous Differential Pulse Voltammetric Determination of Codeine and Acetaminophen Using a Hydroquinone Derivative and Multiwall Carbon Nanotubes Carbon Paste Electrode

International Journal of Analytical Chemistry ◽

10.1155/2015/783157 ◽

2015 ◽

Vol 2015 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Elahe Garazhian ◽

M. Reza Shishehbore

Keyword(s):

Carbon Nanotubes ◽

Differential Pulse Voltammetry ◽

Multiwall Carbon Nanotubes ◽

Differential Pulse ◽

Carbon Paste ◽

Sensitive Sensor ◽

Pulse Voltammetry ◽

Paste Electrode ◽

Multiwall Carbon

A new sensitive sensor was fabricated for simultaneous determination of codeine and acetaminophen based on 4-hydroxy-2-(triphenylphosphonio)phenolate (HTP) and multiwall carbon nanotubes paste electrode at trace levels. The sensitivity of codeine determination was deeply affected by spiking multiwall carbon nanotubes and a modifier in carbon paste. Electron transfer coefficient,α, catalytic electron rate constant,k, and the exchange current density,j0, for oxidation of codeine at the HTP-MWCNT-CPE were calculated using cyclic voltammetry. The calibration curve was linear over the range 0.2–844.7 μM with two linear segments, and the detection limit of 0.063 μM of codeine was obtained using differential pulse voltammetry. The modified electrode was separated codeine and acetaminophen signals by differential pulse voltammetry. The modified electrode was applied for the determination of codeine and acetaminophen in biological and pharmaceutical samples with satisfactory results.

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