Search Results - "Frag, Eman Yossri"

Chemically modified flubendazole carbon electrochemical sensor for aluminum determination in food stuff, Multivitamin syrup and real water samples supported by DFT calculations, IR and morphological tools by Hassan Fawzy, khadega, Zayed, M.A, Yossri Frag, Eman

“…•Determination of Al(III) using CPE based on innocuous reagent, flubendazole drug.•The electrode exhibits a lower detection limit of 1.0 × 10−7 mol…”
Get full text

A validated potentiometric method for the rapid determination of chromium ions content in food samples using a portable graphite sensor by El Badry Mohamed, Marwa, Yossri Frag, Eman, Marzouk, Heba A.

“…•A novel effective, selective, and inexpensive Cr(III) ions sensor was developed.•The Cr(III) ions measurement can be applied over a wide linear range.•The…”
Get full text

Construction and spectroscopic characterization of carbon potentiometric sensors zirconium selective by Mohamed, Gehad G., Mohamed, Hala A., Yossri Frag, Eman

“…•Potentiometric determination of zirconium ions using thick film sheet sensor and conventional ISEs like CPEs based on Xipamide as electroactive materials…”
Get full text

Aluminum(III)-Selective Screen Printed Sensor Based on Methyl Red by Eman Yossri Frag, Mohamed, Marwa E., Samy, Yasser

“…Modified screen printed electrode (MSPE) with 2-[[4-(dimethyl amino) phenyl] diazenyl] benzoic acid (Methyl Red) was prepared for determination of aluminum…”
Get full text

Validated Potentiometric Sensors for Determination of Ramipril in Pharmaceuticals and Biological Fluids using in situ Screen Printed and Carbon Paste Electrodes by Eman Yossri Frag, Mohamed, Marwa E., Elhassan, Mohamed O.

“…In this study, electroactivity and performance characteristics of in situ screen printed ( ISPEs ) and carbon paste ( ICPEs ) electrodes with different types…”
Get full text

Elucidating the Performance of Thick Film Screen Printed Electrodes in Detection of a Local Anesthetic by Eman Yossri Frag, Elashery, Sally E. A., Mohamed, Gehad G., Sleim, Ashraf A. E.

“…The former reported methods for the potentiometric determination of cinchocaine ( Cin ⋅ HCl ) are based on a traditional type of electrodes, polyvinyl chloride…”
Get full text

Application of carbon sensors for potentiometric determination of copper(II) in water and biological fluids of Wilson disease patients. Studying the surface reaction using SEM, EDX, IR and DFT by Frag, Eman Yossri, Mohamed, Marwa El Badry, Fahim, Elham M.

“…The performance characteristics of a new selective and sensitive modified screen printed electrode (MSPE; electrode I) and carbon paste electrode (MCPE;…”
Get full text

Exploitation of o-benzoyl benzoic acid as an efficient electroactive material for selective determination of Cr (III) ions in pharmaceutical samples and industrial waste water using carbon sensor by Frag, Eman Yossri, Mohamed, Nourhan Mahmoud, Elashery, Sally E.A.

“…Herein, for the first time, o-benzoyl benzoic acid has been explored as a promising electroactive material for the fabrication of sensitive, precise and…”
Get full text

Carbon thick sheet potentiometric sensor for selective determination of silver ions in X-ray photographic film by Frag, Eman Yossri, El-Zaher, Nahed A., Elashery, Sally E.A.

“…•Newly screen printed silver selective electrode based on Alizarin Red S (ARS) was developed.•Various experimental parameters were studied and…”
Get full text

Rapid potentiometric sensor for determination of Cu(II) ions in food samples by El Badry Mohamed, Marwa, Frag, Eman Yossri, El Brawy, Mohamed Helal

“…•Copper is an essential trace element with great importance for living organisms.•Developing selective and sensitive sensors for Cu(II) ions is of great…”
Get full text

Novel and selective potentiometric sensors for Cinchocaine HCl determination in its pure and Co-formulated dosage form: A comparative study of in situ carbon sensors based on different ion pairing agents by Elashery, Sally E.A., Frag, Eman Yossri, Sleim, Ashraf A.E.

“…•Promising in situ carbon sensors have been fabricated for cinchocaine HCl detection.•A comparative study of the sensors based on various ion pairing agents…”
Get full text

Determination of Tioconazole via Spectrophotometry Using Charge Transfer Complex Formation by Frag, Eman Yossri, Mahmoud, Asmaa M., Mohamed, Marwa El-Badry

“…A new simple, precise, and sensitive charge transfer method for estimation of tioconazole drug in pure form and Gyno-Trosyd tablet was developed based on the…”
Get full text

Corrigendum to “Application of carbon sensors for potentiometric determination of copper(II) in water and biological fluids of Wilson disease patients. Studying the surface reaction using SEM, EDX, IR and DFT” [Biosens. Bioelectron. 118 (2018) 122–128] by Frag, Eman Yossri, El Badry Mohamed, Marwa, Fahim, Elham M.

Get full text

Chemically modified copper potentiometric sensors based on curcumin and amino acid by Frag, Eman Yossri, Mohamed, Gehad G., Saad, Marwa

“…Modified carbon paste electrodes based on amino acid ( l -ornithine) or curcumin (turmeric) as ionophores and o-nitrophenyl octyl ether (o-NPOE) as solvent…”
Get full text

Influence of Composition and Structure of Charge Transfer Complexes of Tioconazole on Their Spectral Properties and Anticancer Activity by Frag, Eman Yossri, Mahmoud, Asmaa M., Mohamed, Marwa El-Badry

“…It is shown that interaction of electron donor tioconazole (TCZ) with π acceptors chloroanilic acid, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, and picric acid…”
Get full text

Carbon Potentiometric Sensors Modified with Beta-cyclodextrin as a Carrier for the Determination of Bisoprolol Fumarate by Frag, Eman Yossri, Mohamed, Marwa ELbadry, El-Boraey, Hanaa A., EL-Sanafery, Safa S.

“…Beta-cyclodextrin (BCD) has been used as electroactive material for preparing carbon paste electrodes (CPEs) selective for bisoprolol fumarate (BPF). The paste…”
Get full text

Comparative study between two fabricated potentiometric sensors to enhance selectivity towards ferrous ions by Frag, Eman Yossri, Mohamed, Marwa El Badry, Mohamed, Gehad G., Samy, Yasser

“…Electroanalytical methods are highly selective for measuring electrical quantities including the charge, potential and current with their relation to chemical…”
Get full text

A comparative study of tetra-n-butylammonium bromide potentiometric selective screen printed, carbon paste and carbon nanotube modified graphite sensors by Elashery, Sally E. A., Frag, Eman Yossri, Mousa, Mohamed G.

“…A comparative study between in situ screen printed (SPE), carbon paste (CPE) and carbon nanotube modified graphite (CNTME) electrodes was established for the…”
Get full text

Physico-chemical properties and characterization of iron (II) electrochemical sensor based on carbon paste electrode modified with novel antimicrobial Carboxymethyl chitosan-graft-poly(1-cyanoethanoyl-4-acryloyl-thiosemcarbazide) copolymers by Frag, Eman Yossri, Abd El-Ghany, Nahed A., Fattah, Mohammed Abd E.L.

“…Carbon paste electrode (MCPE) modified with novel Carboxymethyl chitosan/poly(1-cyanoethanoyl-4-acryloyl thiosemcarbazide) copolymers (CMCS-PCEATS) was…”
Get full text

A Simple Carbon Electrode for the Potentiometric Determination of N,N,N-Trimethyl-1-Nonanammonium Bromide as a Cationic Surfactant in Formation Water Samples by Frag, Eman Yossri, Elashery, Sally A., Ali, Ahmed. M. A.

“…A carbon electrode utilizing an ion pairing agent for the potentiometric determination of nonyltrimethylammonium bromide (NTAB) was developed. The sensitivity…”
Get full text