Ion-Selective Electrodes

Mikhelson, Konstantin N.

doi:10.1007/978-3-642-36886-8

Cited by 120 publications

(129 citation statements)

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“…(32) The potential of each of the electrodes was alternately recorded after conditioning in 1 × 10 −3 mol L −1 TR.HCl solution then 1 × 10 −4 mol L −1 ephedrine hydrochloride solution and again in 1 × 10 −3 mol L −1 TR.HCl solution.…”

Section: Water Layer Testmentioning

confidence: 99%

Carbon Nanotube Electrodes in Comparison to Coated Platinum Wire and Carbon Paste Selective Electrodes for the Determination of Tramadol Hydrochloride in Bulk, Pharmaceutical Formulations, and Spiked Human Plasma and Urine

2016

Sensors and Materials

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Potentiometric selective electrodes are designed for the electrochemical determination of tramadol hydrochloride (TR.HCl). They are synthesized using coated platinum wire, a carbon paste electrode, and multiwall-carbon-nanotube (MWCNT)-modified carbon paste electrodes. The membranes of the studied electrodes use different types of ionophores as a key element in TR.HCl detection, such as 18-crown-6-ether, β cyclodextrin, and calix[4]arene neutral ionophores. The matrix composition of each electrode is optimized according to ionophore type and concentration, concentration and type of the plasticizer used, and percent of MWCNT added to the carbon paste electrodes. The developed electrodes are completely characterized according to the working concentration range, response time, and suitable pH and temperature range. The developed sensors exhibit excellent stability (more than 8 weeks) with fast dynamic response (<5 s) especially because of the incorporation of MWCNTs which improves the characteristics of the electrodes. The proposed electrodes showed excellent selectivity to TR.HCl in the presence of other related substances. The sensors were applied successfully for the quantitation of TR.HCl in pure form, pharmaceutical dosage form, and in spiked human plasma and urine. They are also applied for quantitation of TR.HCl in dissolution testing of the tablet dosage form.

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Section: Water Layer Testmentioning

confidence: 99%

Carbon Nanotube Electrodes in Comparison to Coated Platinum Wire and Carbon Paste Selective Electrodes for the Determination of Tramadol Hydrochloride in Bulk, Pharmaceutical Formulations, and Spiked Human Plasma and Urine

2016

Sensors and Materials

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“…ISEs approach to trace analysis is advantageous because of the speed, simplicity of procedures, wide working dynamic ranges, and relatively low cost offered by ISEs. Moreover, ionophore-based sensors currently provide a robust, portable, simple, and accurate analysis method and are commonly used in various analytical applications [2]. These sensors can be improved by the development of membrane constituents, electrode design, and methodologies of data acquisition and interpretation [3].…”

Section: Introductionmentioning

confidence: 99%

“…If the assumption about possible similarities between extraction and sensing processes of a carrier is correct, the resulting sensor using HTTA as ionophore should exhibit high sensitivity towards uranyl ions. Therefore, following our recent studies concerning the potentiometric determination of uranyl ions [17], examintion of HTTA capabilities as a mobile carrier for construction of UO 2 2 + selective electrodes was carried out. Optimization, evaluation, and characterization of the constructed electrodes have been made in terms of slope, linear range, lower detection limit, selectivity, and response time.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Selective Determination of Uranyl Ions Using PVC Membrane Sensor

Akl

2017

Electroanalysis

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A UO22+‐PVC membrane electrode was constructed using 2‐thenoyltrifluoroacetone as ionophore and its electrochemical response performance was characterized. The effect of membrane composition on the electrode performance was studied and best results were obtained using dioctylsebacate as a mediator and potassium tetrakis(4‐chlorophenyl)borate as anion excluder. The optimized UO22+‐sensor exhibited a Nernstian response with a slope of 29.5±0.5 mV decade−1 over the concentration range 5.0×10−7−1.0×10−1 mol L−1 at 25 °C with a detection limit of 3.1×10−7 mol L−1. The optimized electrode showed very good selectivity towards UO22+ relative to a wide variety of other cations and fast response time. Surface morphology of the optimized membrane electrode at different stages of its development and use was investigated and discussed. Quantum chemical calculations for geometrical optimization of the ionophore were carried out to investigate the interaction between the ionophore and UO22+ using DFT B3LYP/6‐31++G(d,p) level of theory and the obtained data confirmed the proposed response mechanism. The developed sensor was successfully applied for UO22+ selective determination in real water samples and the obtained results were compared to those obtained by spectrophotometric method indicating no significant difference.

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“…Ionophores are neutral or charged species capable of selectively binding to ions. The selectivity of association or complexation of ionophores dominates the potentiometric selectivity of the respective ISEs [11]. The large variety of selective ionophores makes the main basis for the variety of selectively assayed analytes [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…This characteristic of the ionophores make them to be permanently resident in the membrane and forbid their loss during contacting to test solution. This limits the number of available ionophores for the construction of ion selective membrane electrodes [11].…”

Section: Introductionmentioning

confidence: 99%

Improvement of durability and analytical characteristics of arsenic-imprinted polymer-based PVC membrane electrode via surface modification of nano-sized imprinted polymer particles: part 2

Alizadeh

Rashedi

Hanifehpour

et al. 2015

Electrochimica Acta

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Ion-Selective Electrodes

Cited by 120 publications

References 0 publications

Carbon Nanotube Electrodes in Comparison to Coated Platinum Wire and Carbon Paste Selective Electrodes for the Determination of Tramadol Hydrochloride in Bulk, Pharmaceutical Formulations, and Spiked Human Plasma and Urine

Carbon Nanotube Electrodes in Comparison to Coated Platinum Wire and Carbon Paste Selective Electrodes for the Determination of Tramadol Hydrochloride in Bulk, Pharmaceutical Formulations, and Spiked Human Plasma and Urine

Electrochemical Selective Determination of Uranyl Ions Using PVC Membrane Sensor

Improvement of durability and analytical characteristics of arsenic-imprinted polymer-based PVC membrane electrode via surface modification of nano-sized imprinted polymer particles: part 2

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