Graphene nanoplatelets like structures formed on ionic liquid modified carbon-ceramic electrode: As a sensing platform for simultaneous determination of dopamine and acetaminophen

Herein, an electrochemical sensor has been proposed for the determination of losartan (LOS) in pharmaceutical formulations. A room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM.PF6) was applied to fabricate a modified carbon ceramic electrode (IL-CCE). The electrochemical studies were performed by the cyclic and linear sweep voltammetry (CV and LSV), chronoamperometry and electrochemical impedance spectroscopy (EIS) techniques. The anodic peak currents were increased with the LOS concentration and indicated a linear dynamic range from 20 to 200 μM and a detection limit of 11.7 μM (S/N = 3) under the optimized conditions. Satisfactory results were obtained by analysis of LOS in pharmaceutical tablets.

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Simultaneous determination of ascorbic acid, uric acid and neurotransmitters with a carbon ceramic electrode prepared by sol–gel technique

Talanta ◽

10.1016/j.talanta.2006.02.015 ◽

2006 ◽

Vol 70 (4) ◽

pp. 823-832 ◽

Cited By ~ 104

Author(s):

Abdollah Salimi ◽

Hussein MamKhezri ◽

Rahman Hallaj

Keyword(s):

Ascorbic Acid ◽

Uric Acid ◽

Simultaneous Determination ◽

Sol Gel ◽

Carbon Ceramic Electrode ◽

Gel Technique ◽

Carbon Ceramic

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Differential pulse voltammetric simultaneous determination of acetaminophen and ascorbic acid using single-walled carbon nanotube-modified carbon–ceramic electrode

Analytical Biochemistry ◽

10.1016/j.ab.2011.01.005 ◽

2011 ◽

Vol 411 (2) ◽

pp. 167-175 ◽

Cited By ~ 92

Author(s):

Biuck Habibi ◽

Mojtaba Jahanbakhshi ◽

Mohammad Hossein Pournaghi-Azar

Keyword(s):

Ascorbic Acid ◽

Carbon Nanotube ◽

Simultaneous Determination ◽

Differential Pulse ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Carbon Ceramic Electrode ◽

Carbon Ceramic

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Carbon nanotube-ionic liquid nanocomposite modified carbon-ceramic electrode for determination of dopamine in real samples

Open Chemistry ◽

10.2478/s11532-013-0251-2 ◽

2013 ◽

Vol 11 (7) ◽

pp. 1172-1186 ◽

Cited By ~ 7

Author(s):

Mir Majidi ◽

Reza Baj ◽

Abdolhossein Naseri

Keyword(s):

Ionic Liquid ◽

Carbon Nanotube ◽

Modified Electrode ◽

Electrochemical Impedance ◽

Differential Pulse ◽

Selective Determination ◽

Carbon Ceramic Electrode ◽

Electro Oxidation ◽

Carbon Ceramic

AbstractRoom temperature 1-butyl-3-methylimidazolium tetraflouroborate ([BMIM][BF4]) ionic liquid was employed for dispersion of multi walled carbon nanotubes (MWCNTs) and the formation of nanocomposite on the surface of a carbon-ceramic electrode. The surface of the modified electrode was characterized using scanning electron microscopy and electrochemical impedance spectroscopy. The modified electrode exhibited excellent electrochemical activity to oxidation of dopamine (DA); whereas electro oxidation of ascorbic acid (AA) was not seen and electro oxidation of uric acid (UA) appeared at a more positive potential than DA. The multi walled carbon nanotube-ionic liquid nanocomposite modified carbon-ceramic electrode was used for the selective determination of DA in the presence of high levels of AA and UA using differential pulse voltammetry. The calibration curve for DA was linear in the range of 3.00 to 130 µM with the detection limit (S/N=3) of 0.87 µM. The present electrode was successfully applied to the determination of DA in some commercial pharmaceutical samples and human blood serum.

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