Author = Ayman A Gouda
Number of Articles: 23
Surface active ionic liquid‑assisted cloud point extraction method for preconcentration of nickel in environmental samples before its FAAS determination

Articles in Press, Accepted Manuscript, Available Online from 13 July 2020

Ayman A Gouda; Ragaa elsheikh; Eman M Hafez; Ibrahim S. Ali; Salih S Idris; Osama M. Salem

Preconcentration and spectrophotometric determination of mercury in water, food and hair samples through ionic-liquid induced micelle-mediated extraction

Articles in Press, Accepted Manuscript, Available Online from 13 July 2020

Ayman A Gouda; Ragaa elsheikh; Wafaa Hassan; Sara H Ibrahim; Amira Youssef

Ecofriendly spectrophotometric techniques for the determination of imeglimin hydrochloride in pharmaceutical formulations

Volume 2025, Issue 4, October 2025, Pages 126-136

Ayman A Gouda; Ragaa elsheikh; Asmaa S Abdelhamed; Mohamed A. Afify; Mona A El-Attar; Mahmoud Almasry

Simple and Sensitive Spectrophotometric Methods for Estimation of Vortioxetine HBr in Pharmaceutical Formulations

Volume 2025, Issue 3, July 2025, Pages 52-63

Ayman A Gouda; Ragaa elsheikh; Noha E.M. Elsaify; Nehal S.A. Soliman; Asmaa El Sayed; Ahmed Salah Eldien; Asmaa S Abdelhamed; Mohamed A. Afify

Heavy Metal Treatment in Wastewater: The Problem of Heavy Metal Pollution

Volume 2025, Issue 3, July 2025, Pages 82-104

Ayman A Gouda; Ragaa elsheikh; Bahig Atia; Mohamed A Gado; Ahmed Weshahy; Ahmad Amen

Simple validated approach to quantify valsartan and sacubitril in medications using liquid chromatography

Volume 2025, Issue 3, July 2025, Pages 216-229

Ahmed Sobhy Darwish; Ayman A Gouda; Ragaa elsheikh; Ahmed Salah Eldien

Utilization of charge transfer complexation reaction for spectrophotometric determination of dronedarone hydrochloride in pure and dosage forms

Volume 2025, Issue 2, June 2025, Pages 1-13

Ayman A Gouda; Ragaa elsheikh; Sameh Abdalla; Nessma M. Jumaa; Noha E.M. Elsaify; Nehal S.A. Soliman; Ahmed Ghazy; Asmaa El Said

Quantitative spectrophotometric determination of ivabradine hydrochloride in pharmaceutical formulations based on redox reaction using cerric(IV) ammonium sulphate

Volume 2025, Issue 2, June 2025, Pages 26-38

Ahmed A. Ghazy; Ayman A Gouda; Ragaa elsheikh; Sameh Abdalla; Nessma M. Jumaa; Noha E.M. Elsaify; Nehal S.A. Soliman; Asmaa El Said; Ahmed H. Moustafa

A comprehensive overview on the analytical techniques used for determination of moxifloxacin hydrochloride in pharmaceutical and biological matrices

Volume 2025, Issue 2, June 2025, Pages 95-118

Ayman A Gouda; Ragaa elsheikh; Moataz S. Mahmoud; Ahmed F Abdel Allem; Ahmed El Sayed; Nessma M. Jumaa; Noha E.M. Elsaify; Nehal S.A. Soliman; Asmaa El Sayed

Potentiometric assessment of Iodide Using Ion-Selective Electrodes

Volume 2025, Issue 2, June 2025, Pages 233-241

Abdelnasser A. Mohamed; Mohsen M Zareh; Nora O. Saleem; Ayman A Gouda

Quantitative analytical methods for determination of gemifloxacin mesylate in different matrices: A review

Volume 2025, Issue 1, April 2025, Pages 86-101

Ayman A Gouda; Ragaa elsheikh; Moataz S. Mahmoud; Ahmed F Abdel Allem; Ahmed El Sayed; Ahmed Ghazy; Sameh Abdalla; Nessma M. Jumaa; Noha E.M. Elsaify; Nehal S.A. Soliman

Preconcentration of Cd(II), Co(II), Cu(II), and Pb(II) Utilizing Membrane Filtration Procedure and Their Flame Atomic Absorption Spectrometric Determination in Environmental Samples

Volume 2024, Issue 4, January 2025, Pages 46-56

Ayman A Gouda; Ahmed H. Moustafa; Hager Mohamed; Mohamed Elgafary; Fatma Ibraheem; Ayman E. Abdel Aziz

Spectrophotometric Methods for Quantitative Determination of Imeglimin HCl in Pure and Dosage Forms

Volume 2024, Issue 4, January 2025, Pages 190-200

Ayman A Gouda; Alaa S. Amin; Soha Fahium; Abd El Moamen R.M. Mahdy; Noha E.M. Elsaify; Nehal S.A. Soliman

Review on Tungsten Recovery and Sustainable Practices

Volume 2024, Issue 2, July 2024, Pages 142-154

Ayman A Gouda; Ragaa elsheikh; Rawan Elbshary; Bahig Atia; Mohamed A Gado

Validated Spectrophotometric Methods Based on Charge Transfer Complexation Reactions for the Quantification of Antimalarial Drug: Chloroquine Phosphate in Pure and Dosage Forms

Volume 2024, Issue 1, April 2024, Pages 182-194

Ayman A Gouda; Ragaa elsheikh; Sara Gaber; Moataz S. Mahmoud; Ahmed F Abdel Allem; Ahmed El Sayed; Ahmed Ghazy

Utilization of charge transfer complexation reaction for the spectrophotometric determination of acyclovir as antiviral drug in pharmaceutical formulations

Volume 2023, Issue 4, January 2024, Pages 55-65

Ayman A Gouda; Ragaa elsheikh; Moataz S. Mahmoud; Ghada M. Abdel Fattah; Alyaa S. Ibrahim; Ahmed F Abdel Allem; Nessma M. Jumaa; Ahmed El Sayed

Surfactant assisted spectrophotometric determination of copper(II), and mercury(II) in real samples using 2- amino-4-((4- nitrophenyl)diazenyl)pyridine-3-ol

Volume 2023, Issue 3, October 2023, Pages 11-26

Ahmed H. Moustafa; Hassan A El-Sayed; Alaa S Amin; Asmaa El-Haggar; Ayman A Gouda

Determination of glycerin in pharmaceutical formulations by liquid chromatography

Volume 2023, Issue 1, March 2023, Pages 153-163

Ayman A Gouda; Ragaa El Sheikh; Soad S Abdel Hay; Heba El Sayed; Mohamedd Ali

Assessment of Organochlorine pesticides and heavy metals in groundwater in Belbis region, El-Sharqia, Egypt

Volume 2022, Issue 1, April 2022, Pages 64-70

Ayman A Gouda; Ragaa elsheikh; Mohammed Shaltout; Khairy A. Hamed

An environment-Friendly Cloud Point Extraction Method for preconcentration and determination of Lead and Cadmium in Water Samples

Volume 2016, Issue 1, 2020, Pages 1-10

Ayman A Gouda; Ragaa elsheikh; Kamal El Nabawy; Mohammed Shaltout; Ragaa El Sheikh

Bulletin of Faculty of Science, Zagazig University

Journal Archive