Publications

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2010
Elzanfaly, E. S., M. N. Morkos, and N. K. Ramadan, "Development and validation of PCR, PLS and TLC densitometric methods for the determination of vitamins B1, B6 and B12 in pharmaceutical formulations", Pakistanian Journal of Pharmaceutical Sciences, vol. 23 , issue 4, pp. 409 - 415, 2010.
Ramadan, N. K., M. N. Morkos, and E. S. Elzanfaly, "Membrane electrodes for the simultaneous determination of vitamins B1, B6 and B12", Research & Reviews in ElectroChemistry, vol. 2 , issue 2, pp. 78-87, 2010.
2013
Elzanfaly, E. S., H. E. Zaazaa, and H. A. Merey, "Ion Selective Phosphotungestate and β-cyclodextrin Based Membrane Electrodes for Stability-Indicating Determination of Midodrine Hydrochloride", Acta Chim. Slov., vol. 60 , issue 2, pp. 256–262, 2013. Abstract

This paper reports the construction and evaluation of two ion selective electrodes for the determination midodrine hydrochloride (MD) by direct potentiometry in pure drug substance and in tablet formulations. Precipitation based technique was used for fabrication of the first membrane sensor (sensor 1) using phosphotungestate (PT) and dioctylphthalate (DOP) as cation exchanger and solvent mediator, respectively. β-cyclodextrin (β-CD)-based technique with PT as a fixed anionic site in PVC matrix was used for fabrication of the second membrane sensor (sensor 2). The proposed sensors showed fast, stable Nernstian responses of 54 and 56 mV/decade for sensors 1 and 2, respectively, across a relatively wide MD concentration range (1 × 10–4 to 1 × 10–1 mol/L and 5 × 10–5 to 1 × 10–1 mol/L for sensor 1 and 2, respectively) in the pH range of 5–7. Sensor 1 and sensor 2 can be used for three and two weeks, respectively without any measurable change in sensitivity. The suggested electrodes succeeded to determine intact MD in the presence of up to 10% of its degradation product and displayed good selectivity in presence of common inorganic and organic species.

2016
Motaleb, M. A., I. T. Ibrahim, A. R. S. Rizq, and E. S. Elzanfaly, "Preparation, chromatographic evaluation and biodistribution of 99mTc-procainamide as a radiopharmaceutical for heart imaging", Radiochim. Acta, 2016.
2017
Ramadan, N. K., K. M. Kelani, M. M. Ibrahim, E. S. Elzanfaly, Abdel-Rahman, and K. Mohamed, Ion Selective Membrane Electrodes for the Determination of Mixture of Analgin and Camylofin Dihydrochloride in their Pure Form and Combined Dosage Form, : UNIV TEHRAN, FAC CHEMISTRY, 2017. Abstract
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Elzanfaly, E. S., and H. A. Merey, "A liquid chromatography/tandem mass spectrometric method for determination of captopril in human plasma: Application to a bioequivalence study", Journal of Applied Pharmaceutical Science, vol. 7, no. 2, pp. 008–015, 2017. Abstract
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Ayoub, B. M., S. Mowaka, E. S. Elzanfaly, N. Ashoush, M. M. Elmazar, and S. A. Mousa, "Pharmacokinetic evaluation of empagliflozin in healthy Egyptian volunteers using LC-MS/MS and comparison with other ethnic populations", Scientific Reports, vol. 7, no. 1: Nature Publishing Group UK London, pp. 2583, 2017. Abstract
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Motaleb, M. A., I. T. Ibrahim, R. S. Abo Rizq, and E. S. Elzanfaly, "Preparation, chromatographic evaluation and biodistribution of 99mTc-procainamide as a radiopharmaceutical for heart imaging", Radiochimica Acta, vol. 105, no. 3: De Gruyter, pp. 215–223, 2017. Abstract
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Elzanfaly, E. S., and H. A. Merey, "36) A Liquid Chromatography/Tandem Mass Spectrometric Method for Determination of Captopril in Human Plasma: Application to a Bioequivalence Study", Journal of Applied Pharmaceutical Science, vol. 7 , issue 2, pp. 8-15, 2017. captopril_2017.pdf
B. M. Ayoub, S. Mowaka, E. S. Elzanfaly, M. M. Elmazar, and S. A. Mousa, "Pharmacokinetic Evaluation of Empagliflozin in Healthy Egyptian Volunteers Using LC-MS/MS and Comparison with Other Ethnic Populations, by B. M. Ayoub, S. Mowaka, ", Scientific Reports, vol. 7 , issue 2583, pp. 2-9, 2017. scientific_reports_2017.pdf
2020
MN Saad, MS Mabrouk, H. M. Essam, E. S. Elzanfaly, and S. M. Amer, "Economic chromatographic methods for simultaneous quantitation of some fluoroquinolones and corticosteroids present in different binary ophthalmic formulations", Journal of Liquid Chromatography and Related Technologies, vol. 43, no. 7-8, pp. 271-281, 2020. AbstractWebsite
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Mahmoud, A. M., MN Saad, MS Mabrouk, E. S. Elzanfaly, S. M. Amer, and H. M. Essam, "An electrochemical sensing platform to determine tetrahydrozoline HCl in pure form, pharmaceutical formulation, and rabbit aqueous humor", Analytical Methods, vol. 12, no. 22, pp. 2903-2913, 2020. AbstractWebsite
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Mahmoud, A. M., M. N. Saad, E. S. Elzanfaly, S. M. Amer, and H. A. M. Essam, "An electrochemical sensing platform to determine tetrahydrozoline HCl in pure form, pharmaceutical formulation, and rabbit aqueous humor", Analytical Methods, vol. 12, no. 22: Royal Society of Chemistry, pp. 2903–2913, 2020. Abstract
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Almalki, F. A., M. A. Motaleb, I. T. Ibrahim, R. S. Abo Rizq, and E. S. Elzanfaly, "Radiosynthesis, chromatographic evaluation and biodistribution of [125 I] iododobutamine as a radiotracer for myocardial perfusion imaging", Journal of Radioanalytical and Nuclear Chemistry, vol. 324: Springer International Publishing, pp. 459–466, 2020. Abstract
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Almalki, F. A., M. A. Motaleb, I. T. Ibrahim, R. S. A. Rizq, and E. S. Elzanfaly, "Radiosynthesis, chromatographic evaluation and biodistribution of [125I]iododobutamine as a radiotracer for myocardial perfusion imaging", Journal of Radioanalytical and Nuclear Chemistry, vol. 324, no. 2, pp. 459-466, 2020. AbstractWebsite
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MN Saad, MS Mabrouk, H. M. Essam, E. S. Elzanfaly, and S. M. Amer, "A Two-Step Optimization Approach: Validated RP-HPLC Method for Determination of Gatifloxacin and Dexamethasone in Ophthalmic Formulation", Journal of Chromatographic Science, vol. 58, no. 6, pp. 504-510, 2020. AbstractWebsite
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2021
Sedik, G. A., R. S. Abo Rizq, I. T. Ibrahim, E. S. Elzanfaly, and M. A. Motaleb, "Miniaturized chromatographic systems for radiochemical purity evaluation of 131I-Ferulic acid as a new candidate in nuclear medicine applications", Applied Radiation and Isotopes, vol. 167: Pergamon, pp. 109370, 2021. Abstract
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Heragy, M. O., A. A. M. Moustafa, E. S. Elzanfaly, and A. S. Saad, "A portable solid-state potentiometric sensor based on a polymeric ion-exchanger for the assay of a controversial food colorant (sunset yellow)", Analytical Methods, vol. 13, no. 41, pp. 4896-4903, 2021. AbstractWebsite
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Heragy, M. O., A. A. M. Moustafa, E. S. ElZanfaly, and A. S. Saad, "A portable solid-state potentiometric sensor based on a polymeric ion-exchanger for the assay of a controversial food colorant (sunset yellow)", Analytical Methods, vol. 13, no. 41: Royal Society of Chemistry, pp. 4896–4903, 2021. Abstract
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2022
Heragy, M. O., A. A. M. Moustafa, E. S. ElZanfaly, W. A. Al-Shareef, and A. S. Saad, "Miniaturized solid-state sensor for inline monitoring of the microbial biodegradation of a biohazardous textile azo dye (Direct Red-81)", Talanta Open, vol. 6: Elsevier, pp. 100146, 2022. Abstract
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2023
Mostafa, M. M., G. A. Sedik, E. S. Elzanfaly, and A. H. Nadim, "Development of potentiometric immunosensor for determination of live attenuated Varicella Vaccine: Potency and stability studies", Analytical Biochemistry, vol. 683: Academic Press, pp. 115367, 2023. Abstract
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SOLIMAN, M. A. H. M. O. U. D. A., A. M. Mahmoud, E. S. Elzanfaly, and L. A. E. Fattah, "Electrochemical sensor based on bio-inspired molecularly imprinted polymer for sofosbuvir detection", RSC advances, vol. 13, no. 36: Royal Society of Chemistry, pp. 25129–25139, 2023. Abstract
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2024
SOLIMAN, M. A. H. M. O. U. D. A., A. M. Mahmoud, E. S. Elzanfaly, and L. A. E. Fattah, "Design and application of supramolecular based solid-contact ion-selective electrode for selective green determination of tenofovir disoproxil fumarate", International Journal of Electrochemical Science, vol. 19, no. 2: Elsevier, pp. 100477, 2024. Abstract
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