Potentiometric and surface topography studies of new carbon-paste sensors for determination of thiamine in Egyptian multivitamin ampoules

Issa, Y. M.; Attia, Fekria M. Abou; Sherif, O. E.; Dena, Ahmed S. Abo

doi:10.1016/j.arabjc.2016.11.012

Cited by 10 publications

(11 citation statements)

References 34 publications

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“…In general, and from reported articles, it is evident that both the selected organic compound [ 38 , 39 , 58 , 59 ], usually used as a precipitating agent for IAC, and binder [ 30 , 37 , 39 , 40 ] strongly influence the response of CPE and its characteristics. Various studies and citations can be found in the literature with binder proportions, but all of them in a range between 15 and 55 wt% [ 27 , 30 , 36 , 58 , 60 ].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, ion-selective electrodes have found applications in clinical, industrial, and environmental analysis [ 31 ]. One of the most common procedures for the development of ISE (for the determination of drugs, whether the active ingredient is a component of pharmaceutical preparations or biological fluids) is the incorporation of a lipophilic ion-pair-associated complex into a polyvinyl chloride (PVC) based membrane [ 31 , 32 , 33 , 34 , 35 ] or the preparation of carbon paste electrodes (CPE) [ 5 , 24 , 30 , 31 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Reduced Graphene Oxide Modified Carbon Paste Electrode for Potentiometric Determination of Trihexyphenidyl Hydrochloride in Pharmaceutical and Biological Matrices

Radić

Buljac

Genorio

et al. 2021

Sensors

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A novel promising carbon paste electrode with excellent potentiometric properties was prepared for the analysis of trihexyphenidyl hydrochloride (THP), the acetylcholine receptor and an anticholinergic drug in real samples. It contains 10.2% trihexyphenidy-tetraphenylborate ionic pair as the electroactive material, with the addition of 3.9% reduced graphene oxide and 0.3% of anionic additive into the paste, which consists of 45.0% dibutylphthalate as the solvent mediator and 40.6% graphite. Under the optimized experimental conditions, the electrode showed a Nernstian slope of 58.9 ± 0.2 mV/decade with a regression coefficient of 0.9992. It exhibited high selectivity and reproducibility as well as a fast and linear dynamic response range from 4.0 × 10−7 to 1.0 × 10−2 M. The electrode remained usable for up to 19 days. Analytical applications showed excellent recoveries ranging from 96.8 to 101.7%, LOD was 2.5 × 10−7 M. The electrode was successfully used for THP analysis of pharmaceutical and biological samples.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Reduced Graphene Oxide Modified Carbon Paste Electrode for Potentiometric Determination of Trihexyphenidyl Hydrochloride in Pharmaceutical and Biological Matrices

Radić

Buljac

Genorio

et al. 2021

Sensors

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“…IUPAC defines response time as the time elapsed between the instant an ISE and a reference electrode are in contact with an analyte solution (or the activity of an analyte ion in a solution changes) and the first instant. [36,37] The response time of the newly developed sensor was performed with the method recommended by IUPAC. We determined that the developed sensor stabilizes for 5 seconds for every 10-fold concentration change.…”

Section: Response Time and Life Timementioning

confidence: 99%

A Potentiometric Sensor for the Determination of Pb(II) Ions in Different Environmental Samples

et al. 2022

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In this study, a novel PVC‐based membrane containing (E)‐2‐(1‐(4‐(3‐(4‐chlorophenyl)ureido)phenyl)ethylidene)hydrazine carbothioamide (5) as an electroactive component (ionophore) along with potassium tetrakis (p‐chlorophenyl) borate (KTpClPB) and bis(2‐ethylhexyl)adipate (DEHA) in the ratio 4.0 : 32.0 : 1.0 : 63.0 (ionophore:PVC:KTpClPB:DEHA) (w/w) was used to develop a lead(II)‐selective potentiometric sensor. The sensor exhibited a Nernstian response over a wide concentration range from 1.0×10−5 to 1.0×10−1 mol L−1 with a slope of 28.0±2.0 mV/decade, and a detection limit of 1.65×10−6 mol L−1. It displayed very good selectivity towards Pb(II) ions over other cationic species. The lead(II)‐selective sensor showed a fast response time of 5 s, good repeatability, and it worked in the broad pH range of 5.0–11.0. The sensor could be used as an indicator electrode in the quantification of Pb(II) by potentiometric titration against ethylenediaminetetraacetic acid (EDTA). In addition, this sensor was applied for the direct determination of Pb(II) in different water samples including spring water, purification water, commercial water, waste water and in a waste battery sample.

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“…ISEs are widely used primarily because of their simplicity, are relatively inexpensive, and significantly reduce analysis time compared to other techniques [ 30 ]. For the determination of the active ingredients of various pharmaceuticals, ISEs are usually prepared by incorporating the electroactive substances into polyvinyl chloride (PVC)-based membranes [ 3 , 24 , 31 , 32 , 33 , 34 , 35 , 36 ] or carbon paste membranes [ 35 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. Compared to PVC-based membranes, CPEs are not only faster and easier to fabricate, but also offer easier surface renewal, almost imperceptible ohmic resistance, and certainly more opportunities to modify the membrane composition to improve measurement selectivity [ 48 , 49 ].…”

Section: Introductionmentioning

confidence: 99%

Potentiometric Determination of Maprotiline Hydrochloride in Pharmaceutical and Biological Matrices Using a Novel Modified Carbon Paste Electrode

Radić

Perović

Gričar

et al. 2022

Sensors

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Potentiometry with membrane selective electrodes is preferable for measuring the various constituents of pharmaceuticals. In this work, carbon paste electrodes (CPE) were prepared, modified, and tested for the determination of maprotiline hydrochloride, which acts as an antidepressant. The proposed CPE was based on an ionic association complex of maprotiline-tetraphenylborate, 2-nitrophenyloctyl as a binder, and sodium tetraphenylborate as an ionic lipophilic additive. The optimized composition improved potentiometric properties up to theoretical Nernst response values of −59.5 ± 0.8 mV dec−1, in the concentration range of maprotiline from 1.6 × 10−7 to 1.0 × 10−2 mol L−1, and a detection limit of 1.1 × 10−7 mol L−1. The CPE provides excellent reversibility and reproducibility, exhibits a fast response time, and is applicable over a wide pH range. No significant effect was observed in several interfering species tested. The proposed electrode was used for the precise determination of maprotiline in pure solutions, urine samples, and a real sample—the drug Ludiomil.

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Potentiometric and surface topography studies of new carbon-paste sensors for determination of thiamine in Egyptian multivitamin ampoules

Cited by 10 publications

References 34 publications

A Novel Reduced Graphene Oxide Modified Carbon Paste Electrode for Potentiometric Determination of Trihexyphenidyl Hydrochloride in Pharmaceutical and Biological Matrices

A Novel Reduced Graphene Oxide Modified Carbon Paste Electrode for Potentiometric Determination of Trihexyphenidyl Hydrochloride in Pharmaceutical and Biological Matrices

A Potentiometric Sensor for the Determination of Pb(II) Ions in Different Environmental Samples

Potentiometric Determination of Maprotiline Hydrochloride in Pharmaceutical and Biological Matrices Using a Novel Modified Carbon Paste Electrode

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