Simultaneous Determination of Ascorbic Acid, L-Dopa, Uric Acid, Insulin, and Acetylsalicylic Acid on Reactive Blue 19 and Multi-Wall Carbon Nanotube Modified Glassy Carbon Electrode

Nasirizadeh, Navid; Shekari, Zahra; Tabatabaee, Masoumeh; Ghaani, Masoud

doi:10.5935/0103-5053.20150031

Cited by 7 publications

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“…In the current years, our group has proposed various kinds of electrochemical nano-sensors for the determination of several critical analytes in clinical, 24 industrial, 25 and food elds. 26 In this work, we aimed to develop a new electrochemical sensor for the quantitative determination of GA with higher sensitivity, higher selectivity, and lower limit of detection compared to other electrochemical sensors.…”

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confidence: 99%

Development of an electrochemical nanosensor for the determination of gallic acid in food

et al. 2016

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In the present work, a silver nanoparticle/delphinidin modified glassy carbon electrode (AgNP/Delph/GCE) was fabricated as a highly sensitive electrochemical sensor for gallic acid (GA) determination. Cyclic voltammetry experiments indicated a higher sensitivity and better selectivity for gallic acid when using the AgNP/Delph/GCE as compared with the bare GCE surface, which were attributed to AgNPs and delphinidin, respectively. Moreover, the calculated surface electron transfer rate constant (k s ), and the electron transfer coefficient (a) between the GCE and the electrodeposited delphinidin demonstrated that delphinidin is an excellent electron transfer mediator for the electrocatalytic process. The average catalytic rate constant (k 0 ) of the overall process was also estimated to be 7.40 Â 10 À4 cm s À1 for the AgNP/Delph/GCE in the presence of 1.50 mmol L À1 of GA. Amperometry experiments were used to determine the limit of detection of the AgNP/Delph/GCE electrochemical sensor, which was 0.28 mmol GA. The activity of the modified electrode was eventually investigated to assess the potential quantification of GA in real foods.

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Development of an electrochemical nanosensor for the determination of gallic acid in food

et al. 2016

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“…The obtained k s value is higher than the previously reported values for other works such as k s = 6.3 and 6.0 s -1 . 28 Characterization of the surface morphology of N-GO/ AgNPs/TBHQ/GCE The surface morphologies of different electrodes were characterized by SEM, since the morphology was also related to the performance of the electrode. Figure 3 shows the morphologies of N-GO/AgNPs/GCE (Figure 3a) and N-GO/AgNPs/TBHQ/GCE (Figure 3b).…”

Section: Resultsmentioning

confidence: 99%

Novel Non Enzymatic TBHQ Modified Electrochemical Sensor for Hydrogen Peroxide Determination in Different Beverage Samples

Nasirizadeh¹,

Ghaani²,

Shekari³

et al. 2016

Journal of the Brazilian Chemical Society

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A nanosensor was developed for hydrogen peroxide determination based on nafion/graphene oxide/silver nanoparticles/tertiary butylhydroquinone (TBHQ) modified glassy carbon electrode (N-GO/AgNPs/TBHQ/GCE). Cyclic voltammetry was used to investigate the electrochemical behavior of this modified electrode and differential pulse voltammetry was used for the reduction of H 2 O 2 . The limit of detection was 0.46 µmol L -1 and three linear calibration ranges were obtained for H 2 O 2 determination from 1.52-9.79 µmol L -1 for first linear segment, 9.79-231.0 µmol L -1 for second linear segment and 231.0-8330.0 µmol L -1 for third linear segment. Finally, the reliability of the nanosensor was confirmed in the real sample analysis in different beverages with satisfactory results.

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“…Also, it can be utilized as a medication drug for the treatment of epilepsy and Parkinson's disease. [3][4][5][6][7][8][9] After taking L-dopa, it can be converted into DA in the human body through a catalytic reaction with the aid of dopa-decarboxylase enzyme and can be stored in dopaminergic neurons. [4][5][6] L-dopa can be used in the healing of tremors, rigidity, spams, postural instability, movement and weak control of muscles slowness associated with Parkinson's disease or with some drugs like perphenazine, fluphenazine and chlorpromazine.…”

Section: Introductionmentioning

confidence: 99%

“…4 Thus, there is an essential need to determine L-dopa concentration in biological fluids and pharmaceutical formulations for the aim of controlling its dosage. [3][4][5][6][7][8][9] Different electrochemical approaches have been discussed for the sensitive determination of L-dopa based on carbon nanotubes, [10][11][12] graphene, 13,14 metal/metal oxides nanoparticles, [15][16][17][18][19] etc.…”

Section: Introductionmentioning

confidence: 99%

Efficient Electrochemical Sensor Based on Gold Nanoclusters/Carbon Ionic Liquid Crystal for Sensitive Determination of Neurotransmitters and Anti-Parkinson Drugs

et al. 2019

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Purpose: Herein we introduce a simple and sensitive sensor for the electrochemical determination of neurotransmitters compounds and anti-Parkinson drugs. Methods: The electrochemical sensor (Au/CILCE) based on gold nanoclusters modified carbon ionic liquid crystal (ILC) electrode was characterized using scanning electron microscopy and voltammetry measurements. Results: The effect of ionic liquid type in the carbon paste composite for the electro-catalytic oxidation of L-dopa was evaluated. Highest current response was obtained in case of ILC compared to other studied kinds of ionic liquids. The effective combination of gold nanoclusters and ILC resulted in extra advantages including large surface area and high ionic conductivity of the nanocomposite. L-dopa is considered one of the most important prescribed medicines for treating Parkinson’s disease. Moreover, a binary therapy using L-dopa and carbidopa proved effective and promising as it avoids the short comings of L-dopa mono-therapy for Parkinson’s patients. The Au/CILCE can detect L-dopa in human serum in the linear concentration range of 0.1 μM to 90 μM with detection and quantification limits of 4.5 nM and 15.0 nM, respectively. Also, the Au/CILCE sensor can simultaneously and sensitively detect L-dopa in the presence of carbidopa with low detection limits. Conclusion: The sensor is advantageous to be applicable for electrochemical sensing of other biologically electroactive species.

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Simultaneous Determination of Ascorbic Acid, L-Dopa, Uric Acid, Insulin, and Acetylsalicylic Acid on Reactive Blue 19 and Multi-Wall Carbon Nanotube Modified Glassy Carbon Electrode

Cited by 7 publications

References 0 publications

Development of an electrochemical nanosensor for the determination of gallic acid in food

Development of an electrochemical nanosensor for the determination of gallic acid in food

Novel Non Enzymatic TBHQ Modified Electrochemical Sensor for Hydrogen Peroxide Determination in Different Beverage Samples

Efficient Electrochemical Sensor Based on Gold Nanoclusters/Carbon Ionic Liquid Crystal for Sensitive Determination of Neurotransmitters and Anti-Parkinson Drugs

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