Voltammetric determination of verapamil and propranolol using a glassy carbon electrode modified with functionalized multiwalled carbon nanotubes within a poly (allylamine hydrochloride) film

Oliveira, Geiser Gabriel; Azzi, Déborah C.; Vicentini, Fernando Campanhã; Sartori, Elen Romão; Fatibello‐Filho, Orlando

doi:10.1016/j.jelechem.2013.09.016

Cited by 55 publications

(23 citation statements)

References 37 publications

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“…In the last decade, plenty of carbonaceous materials, such as, carbon nanofibers [1], carbon nanotube [2][3][4][5], graphene [6,7], carbon black [8,9], fulerenes [10,11], carbon nanoparticles [12,13] and carbonaceous foam materials [14] have been studied and used to develop new sensors and biosensors. Carbon black is generally used as inexpensive and high effectiveness reinforcement for rubber tyres and others polymer-matrix composites [15,16] with its characteristics allowing carbon black to develop a fibrous morphology which exhibits a reinforcing ability.…”

Section: Imparting Improvements In Electrochemical Sensorsmentioning

confidence: 99%

Imparting improvements in electrochemical sensors: evaluation of different carbon blacks that give rise to significant improvement in the performance of electroanalytical sensing platforms

Vicentini

Ravanini

Figueiredo-Filho

et al. 2015

Electrochimica Acta

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125

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Imparting improvements in electrochemical sensors: evaluation of different carbon blacks that give rise to significant improvement in the performance of electroanalytical sensing platforms, Electrochimica Acta http://dx.doi.org/10.1016/j.electacta. 2014.11.204 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Graphical abstract Imparting improvements in electrochemical sensorsThree different carbon black materials have been evaluated as a potential modifier, however, only one demonstrated an improvement in the electrochemical properties. The carbon black structures were characterised with SEM, XPS and Raman spectroscopy and found to be very similar to that of amorphous graphitic materials. The modifications utilised were constructed by three different strategies (using ultrapure water, chitosan and dihexadecylphosphate). The fabricated sensors are electrochemically characterised using N,N,N',N'-tetramethyl-para-phenylenediamine and both inner-sphere and outer-sphere redox probes, namely potassium ferrocyanide(II) and hexaammineruthenium(III) chloride, in addition to the biologically relevant and electroactive analytes, dopamine (DA) and acetaminophen (AP).Comparisons are made with an edge-plane pyrolytic graphite and glassy-carbon electrode and the benefits of carbon black implemented as a modifier for sensors within electrochemistry are explored, as well as the characterisation of their electroanalytical performances. We reveal significant improvements in the electrochemical performance (excellent sensitivity, faster heterogeneous electron transfer rate (HET)) over that of a bare glassy-carbon and edge-plane pyrolytic graphite electrode and thus suggest that there are substantial advantages of using carbon black as modifier in the fabrication of electrochemical based sensors. Such work is highly important and informative for those working in the field of electroanalysis where electrochemistry can provide portable, rapid, reliable and accurate sensing protocols (bringing the laboratory into the field), with particular relevance to those searching for new electrode materials.

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Section: Imparting Improvements In Electrochemical Sensorsmentioning

confidence: 99%

Imparting improvements in electrochemical sensors: evaluation of different carbon blacks that give rise to significant improvement in the performance of electroanalytical sensing platforms

Vicentini

Ravanini

Figueiredo-Filho

et al. 2015

Electrochimica Acta

Self Cite

125

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“…Several methods have been reported for the determination of these drugs which includes spectrophotometry [10][11][12], spectrofluorimetry [13][14], gas chromatography-mass spectrometry (GC-MS) [15][16], high-performance liquid chromatography (HPLC) [17][18], liquid chromatography-mass spectrometry (LC-MS) [19][20][21], chemiluminescence [22][23], capillary electrophoresis [24][25] and voltammetry [26][27]. Spectrophotometric methods because of their inherent simplicity and rapidity of the procedure and low cost of the techniques find favour in most laboratories of limited means and consequently these methods continue to flourish.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Determination of Propranolol Hydrochloride and Metoprolol Tartrate in Pharmaceutical Dosage Forms, Spiked Water and Biological Fluids

Sharma

Singh

Raj

2018

Int J Pharm Pharm Sci

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Objective: A new spectrophotometric method for the determination of propranolol hydrochloride (PRO) and metoprolol tartrate (MTP), beta blocker drugs, has been developed for their analysis in pharmaceutical dosage forms for the purpose of quality control and water samples for monitoring impact on environmental water quality of natural sources and in biological fluids for ascertaining their physiological performance. Methods:The method is based on the derivatization of the amino function present in these drugs to the corresponding yellow copper (I) drug dithiocarbamate derivative through reaction with carbon disulphide, pyridine and copper (I) perchlorate in aqueous acetonitrile and measuring absorbance at 406 nm for propranolol and 400 nm for metoprolol. The different experimental parameters affecting the development and stability of the colour were carefully studied and optimized.Results: The Beer's law is obeyed in the range of 1.0-40.0 μg/ml of each drug solution with a correlation coefficient 0.999. The maximum relative standard deviations (RSDs) in the analysis of pure PRO and MTP were 1.01 and 1.52 % respectively. The recoveries of the drugs from pharmaceutical formulations, spiked water samples and biological fluids were in the range 98.0-100.5 % with RSDs in the range 0.23-1.94% indicating good accuracy and precision of the method. Conclusion:The instantaneous development of colour and its stability, well-established stoichiometry of the reaction and above simplicity and rapidity of procedures are some special attributes of the proposed method.

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“…Indeed, stable dispersions have been prepared with nanomaterials for electroanalysis [17,18], which provides good stability and do not interfere in the electron transfer at electrode/solution interface. As examples, we can highlight the use of metal nanoparticles (MNPs) [18][19][20][21], graphene [2,22] and/or carbon nanotubes [23,24].…”

Section: Introductionmentioning

confidence: 99%

Direct electrochemistry of hemoglobin and biosensing for hydrogen peroxide using a film containing silver nanoparticles and poly(amidoamine) dendrimer

Baccarin

Janegitz

Berté

et al. 2016

Materials Science and Engineering: C

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Voltammetric determination of verapamil and propranolol using a glassy carbon electrode modified with functionalized multiwalled carbon nanotubes within a poly (allylamine hydrochloride) film

Cited by 55 publications

References 37 publications

Imparting improvements in electrochemical sensors: evaluation of different carbon blacks that give rise to significant improvement in the performance of electroanalytical sensing platforms

Imparting improvements in electrochemical sensors: evaluation of different carbon blacks that give rise to significant improvement in the performance of electroanalytical sensing platforms

Spectrophotometric Determination of Propranolol Hydrochloride and Metoprolol Tartrate in Pharmaceutical Dosage Forms, Spiked Water and Biological Fluids

Direct electrochemistry of hemoglobin and biosensing for hydrogen peroxide using a film containing silver nanoparticles and poly(amidoamine) dendrimer

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