Silver nanoparticles/multi walled carbon nanotubes nanocomposite modified electrode: Voltammetric determination of clonazepam

Habibi, Biuck; Jahanbakhshi, Mojtaba

doi:10.1016/j.electacta.2013.11.169

Cited by 69 publications

(27 citation statements)

References 58 publications

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“…More recent reports have utilised modifications of the working electrode surface such as with silver nanoparticle/multi walled carbon nanotube nanocomposites [39]. However, we do not feel that this approach will allow for mass production that has been shown by screen-printing [40,41].…”

Section: Discussionmentioning

confidence: 99%

Development of a voltammetric assay, using screen-printed electrodes, for clonazepam and its application to beverage and serum samples

Honeychurch

Brooks

Hart

2016

Talanta

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Development of a voltammetric assay, using screen-printed electrodes, for clonazepam and its application to beverage and serum samples. Talanta, 147. pp. 510-515. ISSN 0039-9140 Available from: http://eprints.uwe.ac.uk/27297We recommend you cite the published version. The publisher's URL is: http://dx.doi.org/10.1016/j.talanta.2015.10.032Refereed: Yes (no note) Disclaimer UWE has obtained warranties from all depositors as to their title in the material deposited and as to their right to deposit such material. UWE makes no representation or warranties of commercial utility, title, or fitness for a particular purpose or any other warranty, express or implied in respect of any material deposited. UWE makes no representation that the use of the materials will not infringe any patent, copyright, trademark or other property or proprietary rights. UWE accepts no liability for any infringement of intellectual property rights in any material deposited but will remove such material from public view pending investigation in the event of an allegation of any such infringement. AbstractThis paper describes the development of an electrochemical assay based on screen-printed carbon sensors for the determination of clonazepam in serum and in wine. The cyclic voltammetric behaviour of the drug was investigated and the effects of pH and scan rate on the peak current and peak potential determined. Two reduction peaks were recorded on the initial negative going scan, which were considered to result from the 2e -, 2H + reduction of the 4,5-azomethine and from the 4e -, 4H + reduction of the 7-NO 2 to a hydroxylamine. On the return positive going scan an oxidation peak was seen, which was considered to result from the 2e -, 2H + oxidation (O1) of the hydroxylamine to the corresponding nitroso species.At pH 11 the solution of clonazepam was found to turn from clear to yellow in colour and the voltammetric signal of the O1 oxidation process was found to be adsorptive in nature, this was exploited in the development of an adsorptive stripping voltammetric assay.Experimental conditions were then optimised for the differential pulse adsorptive voltammetric measurement of clonazepam in wine and serum samples. It was shown that these analyses could be performed on only 100 µL of sample which was deposited on the sensor surface. Mean recoveries of 79.53 % (%CV = 9.88 %) and 88.22 % (%CV = 14.1 %) 2 were calculated for wine fortified with 3.16 µg/mL and serum fortified with 12.6 µg/mL respectively.

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Section: Discussionmentioning

confidence: 99%

Development of a voltammetric assay, using screen-printed electrodes, for clonazepam and its application to beverage and serum samples

Honeychurch

Brooks

Hart

2016

Talanta

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“…formulations including spectrophotometry 6,7,8,9, GC-MS chromatography 10, HPLC 11,12 capillary electrophoresis 13, electrochem-iluminescence sensors 14 , Voltammetry 15 , potentiometry 16,17 . The purpose of this work is to develop a simple, rapid and accurate spectrophotometric method to measure the quantities (CLZ.)…”

Section: This Is Anmentioning

confidence: 99%

Development of Spectrophotometric Method for Estimating Clonazepam in its Pure Form and in Pharmaceutical Tablets

Fadhel¹,

Khamees²

2018

Orient. J. Chem

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A study aimed to recommend spectrophotometric method for the determination of clonazepam (CLZ.) in pure form and their pharmaceutical tablets by the reaction of sited drug with ferric chloride in presence potassium ferric cyanide in acid medium to form prussian blue complex and determine it by UV-Vis spectrophotometric at 526 nm. The variables that affect the completion of reaction have been carefully optimized. The linearity range was (2-35μg. mL -1 ) with a molar absorptivity of 2.8035×10 4 L.mol -1 . cm -1 . The limit of detection was 0.5703μg. mL -1 and Sandell's sensitivity value was 0.0103μg. cm -2 . The suggest method was successfully used to estimate clonazepam in commercial formulations.

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“…Silver inclusion within the electrode composition represents an useful and promising approach due to its high catalytic activity [7], [8]. The catalytic activity of the catalyst is in direct relation with its size and morphostructural characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…It is well-known that these electrodes possess electrocatalytic activity that is reflected as improved electroanalytical performance in the electroanalysis [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Silver Electrodeposited Carbon Nanofiber-Epoxy Electrode for Fluoxetine Detection

Ardelean¹,

Manea²,

Pode³

2016

IJCEA

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Abstract-In this study, a simple and high sensitive electrochemical sensor is developed for the detection of fluoxetine (FXT) on a silver electrodeposited-carbon nanofiber-epoxy (AgCNFE) electrode. Cyclic voltammetry (CV) method was used for the comparative electrochemical behavior of FXT on AgCNFE, commercial silver electrode (Ag) and carbon nanofiber-epoxy (CNFE) composite electrode. A synergic effect in relation to the sensitivity for FXT detection was found on AgCNFE electrode versus commercial Ag electrode and CNFE electrode. Chronoamperometry (CA) results show that AgCNFE electrode exhibited a great potential for the real practical application in FXT detection without possible interference.Index Terms-Carbon nanofiber, silver electrodeposited, fluoxetine detection.

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Silver nanoparticles/multi walled carbon nanotubes nanocomposite modified electrode: Voltammetric determination of clonazepam

Cited by 69 publications

References 58 publications

Development of a voltammetric assay, using screen-printed electrodes, for clonazepam and its application to beverage and serum samples

Development of a voltammetric assay, using screen-printed electrodes, for clonazepam and its application to beverage and serum samples

Development of Spectrophotometric Method for Estimating Clonazepam in its Pure Form and in Pharmaceutical Tablets

Silver Electrodeposited Carbon Nanofiber-Epoxy Electrode for Fluoxetine Detection

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