A Novel all Solid-State Contact PVC-Membrane Beryllium-Selective Electrode Based on 4-Hydroxybenzo-15-Crown-5 Ether Ionophore

Işıldak, İbrahim; Attar, Azade; Demir, Ersin; Kemer, Barış; Aboul‐Enein, Hassan Y.

doi:10.2174/1573411012666161014164546

Cited by 16 publications

(7 citation statements)

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“…Among different types of potentiometric sensors used for ferric cations determination, most of them are based on conductive polymers [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ], carbon materials electrodes [ 36 , 37 ], and to a small extent with those based on iron salts [ 38 ]. Silver sulfide was used as a conductor in Ref.…”

Section: Introductionmentioning

confidence: 99%

The New Ion-Selective Electrodes Developed for Ferric Cations Determination, Modified with Synthesized Al and Fe−Based Nanoparticles

Paut

Prkić

Mitar

et al. 2021

Sensors

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The solid-state ion-selective electrodes presented here are based on the FePO4:Ag2S:polytetrafluoroethylene (PTFE) = 1:1:2 with an addition of (0.25–1)% microwave-synthesized hematite (α-Fe2O3), magnetite (Fe3O4), boehmite [γ-AlO(OH)], and alumina (Al2O3) nanoparticles (NPs) in order to establish ideal membrane composition for iron(III) cations determination. Synthesized NPs are characterized with Fourier-Transform Infrared (FTIR) spectroscopy, Powder X-Ray Diffraction (PXRD), and Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS). The iron oxides NPs, more specifically, magnetite and hematite, showed a more positive effect on the sensing properties than boehmite and alumina NPs. The hematite NPs had the most significant effect on the linear range for the determination of ferric cations. The membrane containing 0.25% hematite NPs showed a slope of −19.75 mV per decade in the linear range from 1.2∙10−6 to 10−2 mol L−1, with a correlation factor of 0.9925. The recoveries for the determination of ferric cations in standard solutions were 99.4, 106.7, 93.6, and 101.1% for different concentrations.

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Section: Introductionmentioning

confidence: 99%

The New Ion-Selective Electrodes Developed for Ferric Cations Determination, Modified with Synthesized Al and Fe−Based Nanoparticles

Paut

Prkić

Mitar

et al. 2021

Sensors

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“…172 Isildak et al showed that 4-hydroxybenzo-15-crown-5 ether can be used as ionophore in PVC membrane beryllium ISE for the detection of Be 2+ in solutions. 173 Enzymatic biocatalytic precipitation and nanogold labeling techniques have been used to improve the sensitivity in potentiometric immunosensors response. 174 The logarithmic dependence between the chemical potential and the analyte activity, as expressed by the Nernst equation, leads to a low sensitivity in potentiometric ion sensors.…”

Section: Electrochemical Nanosensorsmentioning

confidence: 99%

Review—Bio-Nanosensors: Fundamentals and Recent Applications

Perdomo

Marmolejo‐Tejada

Jaramillo-Botero

2021

J. Electrochem. Soc.

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“…Preparation of the electrodes and measurement procedure Manufacturing an electrode is generally a two-step process. The first step is the preparation of the surface to be coated with a membrane which brings solid contact [13,14]. In this study, solid-contact composition was made from graphite 50% (w/w), epoxy resin 35% (w/w), and hardener 15% (w/w).…”

Section: Formation Of Risperidone -Phenol Red (Rsp -Pr) and Risperidone -Bromo Phenol Blue (Rsp -Bpb) Ion-pair Complexesmentioning

confidence: 99%

A Novel Sensitive and Selective Potentiometric Sensor for Risperidone Detection

Işıldak¹

2018

FARMACIA

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An antipsychotic drug containing risperidone can be analysed by liquid chromatographic techniques (LC) using UV-visible and fluorescence detectors. However, all developed methods based on LC are expensive, time consuming due to pre-and post-column reaction, and also not very sensitive. The preparation of micro-sized composite risperidone-sensitive sensors and their suitability as detector in a flow-injection analysis system is described. A risperidone-sensitive sensor membrane was prepared by coating a composite cocktail on the surface of the contact transducer in solid state. The composition ratio percentage for the best performance was obtained with 2.5% (w/w) active ingredient (ionophore), 67% (w/w) plasticizer, 30% (w/w) PVC, and 0.5% sodium tetraphenyl borate. The potentiometric performances of risperidone-selective sensor (selectivity constant, liner domain, detection limit, response time, pH working domain, repeatability, lifetime, and time dependent potential decay) were determined using computer controlled measurement systems in static conditions. RezumatMedicamentele antipsohotice cu risperidonă pot fi analizate prin tehnici lichid cromatografice (LC), folosind detectori UV-Vizibil şi de fluorescenţă, dar toate metodele LC descrise în literatura de specialitate nu sunt suficient de selective și/sau sensibile, sunt costisitoare şi consumatoare de timp din cauza reacţiilor pre-și post-coloană. Prin urmare, s-a abordat obţinerea unor microsenzori risperidonă-selectivi şi utilizarea acestora ca detectori într-un sistem de analiză prin injecţie în flux. Prepararea unei membrane risperidonă-selectivă a fost realizată prin acoperirea suprafaței traductorului de contact în stare solidă cu un amestec compozit. Cele mai bune performanţe au fost obţinute pentru următoarea compoziție: ingredient activ (ionofor) 2,5% (g/g), plastifiant 67% (g/g), din PVC 30% (g/g) și tetrafenil borat de sodiu 0,5%. Performanțele analitice ale senzorului risperidonă-selectiv (constanta de selectivitate, domeniu liniar, limita de detecție, timpul de răspuns, pH-ul de lucru, repetabilitatea, durata de viață) și de potențial de degradare timp dependent) au fost determinate în regim static cu ajutorul sistemelor de măsurare asistate de calculator.

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A Novel all Solid-State Contact PVC-Membrane Beryllium-Selective Electrode Based on 4-Hydroxybenzo-15-Crown-5 Ether Ionophore

Cited by 16 publications

References 0 publications

The New Ion-Selective Electrodes Developed for Ferric Cations Determination, Modified with Synthesized Al and Fe−Based Nanoparticles

The New Ion-Selective Electrodes Developed for Ferric Cations Determination, Modified with Synthesized Al and Fe−Based Nanoparticles

Review—Bio-Nanosensors: Fundamentals and Recent Applications

A Novel Sensitive and Selective Potentiometric Sensor for Risperidone Detection

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