Potentiometric determination of mercury (II) ion in various real samples using novel modified screen-printed electrode

Aglan, Refaat F.; Saleh, Hosam M.; Mohamed, Gehad G.

doi:10.1007/s13201-018-0781-z

Cited by 20 publications

(10 citation statements)

References 46 publications

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“…A polyvinyl chloride flexible sheet (0.2 mm) was used as a substrate which was not affected by the curing temperature or the ink solvent and easily cutted by scissors. The indicator electrodes were prepared depending on the method of preparation, SPEs [8][9][10] were heterogeneous electrodes having a composite structure since the printing ink matrix colligates different phases (carbon powder, plasticizer, modifier) polymeric binder which was PVC dissolved in proper organic solvent (50 mL acetone and 50 mL cyclohexanone) after printing and curing carbon tracks were deposited on the substrate with a final composition 30.55% carbon, 18.33% plasticizer, 51.92% PVC and 0.18% ion pairing agent (NaTPB, PTA, PMA, RN). They were printed and cured at 60 ºC for 2 hrs.…”

Section: Modified Screen Printed Electrodes Preparationmentioning

confidence: 99%

Electrochemical performance of screen printed sensors for potentiometric determination of anticholinergic oxybutynine hydrochloride in pharmaceutical formulations and biological fluids.

Mohammad

Ali

Farag³

et al. 2019

Egypt. J. Chem.

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N EW potentiometric sensitive and selective modified screen printed electrodes (MSPE) which based on phosphotungestic acid (PTA), sodium tetraphenyl borate (NaTPB), phosphomolybdic acid (PMA) or ammonium reineckate (RN) ion pairing agents for determination of oxybutynine hydrochloride (OBCH) were developed. The proposed electrodes have Nernstian slope values of 59.200.52±, 58.000.22± and 58.520.22± mV decade-1 for electrodes modified with 7.5, 17.5 and 7.5 mg of RN (electrode I), NaTPB (electrode II) and PTA (electrode III) ion pairing agents, respectively. It is found that the dynamic drug concentration range at 25 °C was 1.0x10-5-1.0x10-2 mole L-1 with detection limit (LOD) equal 1.0× 10-5 mol L-1 and limit of quantification (LOQ) equal 3.33×10-5 mol L-1. The response of MSPEs was pH independent in the range 2.0-6.0. The investigated electrodes have fast response time of 10, 9 and 8 s for electrodes I, II and III, respectively. These electrodes have good Nernstian response in the temperature range 10-60 °C. The slope of the straight-line obtained represented the isothermal coefficient of MSPEs which were found to be 1.594 ×10-3 , 2.151×10-3 and 2.377×10-3 V/ for electrodes I, II and III, respectively. The small values of the isothermal coefficient indicated the high thermal stability of the electrodes. The MSPEs showed a relatively long life time of 36 days. Pure, biological fluids and pharmaceutical formulation of OBCH were quantified using calibration and standard addition methods and the obtained results agreed with that of the official HPLC method. Validation parameters were optimized according to ICH recommendations.

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Section: Modified Screen Printed Electrodes Preparationmentioning

confidence: 99%

Electrochemical performance of screen printed sensors for potentiometric determination of anticholinergic oxybutynine hydrochloride in pharmaceutical formulations and biological fluids.

Mohammad

Ali

Farag³

et al. 2019

Egypt. J. Chem.

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“…Modified SPEs were printed in arrays of six couples consisting of the working and the reference electrodes (each 5 mm × 35 mm) following the procedures previously described [1,3,30,31]. A polyvinyl chloride flexible sheet (0.2 mm) was used as a substrate that was not affected by the curing temperature or the ink solvent and was easily cut by scissors.…”

Section: Preparation Of the Bismuth-modified Screen-printed Electrode...mentioning

confidence: 99%

“…Industrial wastewater accumulated from several activities with growing applications accompanied by severe environmental pollution that arises with the discharge of untreated industrial contaminants in water streams. This aqueous pollution has to be controlled by accurate identifications using efficient selective sensors [1][2][3] and finding environmentally friendly techniques for water treatment [4][5][6]; then, the remaining contaminants have to be stabilized [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A new screen-printed electrode for selective determination of bismuth in different authentic samples

2023

Self Cite

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A new potentiometric method based on the screen-printed ion-selective electrode (SPISE) was described for the determination of Bi(III) ion in different authentic samples. The novelty is based on, for the first time, the utilization of the cerium zirconium phosphotungstate (CZPT) in a screen-printed electrode (SPE) as a sensing material. In the literature, there is no screen-printed ion-selective electrode for the determination of Bi(III) ion. The influences of the paste composition, different conditioning parameters and foreign ions on the electrode performance were investigated. The reversibility and also response time of the electrode have been studied. The electrode showed a Nernstian response of 18.2 mV decade−1 in the concentration range of 3.3 × 10−7–1 × 10−1 mol. L−1. The electrode was found to be usable within the pH range of 3.5–8.0 and exhibited a fast response time, limit of detection (LOD) (1 × 10−7 mol. L−1), limit of quantification (LOQ) (3.33 × 10−7 mol. L−1), long lifetime and good stability. The matched potential method (MPM) was applied to determine the selectivity coefficient. The isothermal temperature coefficient (dEo/dt) of the electrode was calculated. The electrode was successfully applied for the determination of Bi(III) ion in different authentic samples. By comparing the current results with those obtained using inductively coupled plasma optical emission spectrometry, the nominated Bi(III) screen-printed ion-selective electrode has attained acceptable and efficient performance.

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“…Aglan et al described a screen-printed Hg 2+ -selective electrode based on a zirconium antimonate ionophore . The electrode demonstrated a slope of 30.0 mV/decade with detection limit of 50 nM in the pH range of 2.5–8.5.…”

Section: Sensor Materialsmentioning

confidence: 99%

Potentiometric Sensing

2020

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Potentiometric determination of mercury (II) ion in various real samples using novel modified screen-printed electrode

Cited by 20 publications

References 46 publications

Electrochemical performance of screen printed sensors for potentiometric determination of anticholinergic oxybutynine hydrochloride in pharmaceutical formulations and biological fluids.

Electrochemical performance of screen printed sensors for potentiometric determination of anticholinergic oxybutynine hydrochloride in pharmaceutical formulations and biological fluids.

A new screen-printed electrode for selective determination of bismuth in different authentic samples

Potentiometric Sensing

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