Publications

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In Press
Rezk, M. R., A. M. Michael, H. M. Lotfy, A. O. El-Kadi, and M. A. Shehata, "A Rapid and Sensitive HPLC Assay of Some Concomitant Anti-Migraine Drugs", Journal of Chromatographic Science,, pp. 1–3, In Press.
2108
Lotfy, H. M., and Y. R. Omran, "Novel absorptivity centering method utilizing normalized and factorized spectra for analysis of mixtures with overlapping spectra in different matrices using built-in spectrophotometer software", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 200, pp. 167-178, 2108.
Lotfy, H. M., and S. S. Saleh, "Testing the purity of spectral profiles: Finger-print resolution of complex matrices and extraction of absorbance signals", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 205, pp. 160-169, 2108.
2022
Lotfy, H. M., S. S. Saleh, O. A. El-Naem, G. Tiris, and N. Erk, "The power of High Impact Amplitude Manipulation (HIAM) technique for extracting the basic spectra of two Fixed-dose combinations (FDC) - Spectrophotometric purity analysis via spectral contrast angle", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 273, pp. 121036, 2022. spectrochimica_acta_1_1-s2.0-s1386142522001846-main_1_4.pdf
Lotfy, H. M., and D. A. Ahmed, "Sticking - pulling strategy for assessment of combined medicine for management of tough symptoms in COVID-19 Pandemic using different windows of spectrophotometric Platform-Counterfeit products’ detection", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 277 , pp. 121256, 2022. spectrochimica_2_sticking_1-s2.0-s138614252200405x-main_1.pdf
2021
Lotfy, H. M., R. H. Obaydo, and A. A. Sakur, "Evaluation of assay and in-vitro dissolution profile of certain fixed-dose combination using green analytical method", Annales Pharmaceutiques Françaises, vol. Volume 79 , issue Issue 1, pp. Pages 3-15, 2021. in_vitro__1-s2.0-s0003450920300870-main_1_1.pdf
Lotfy, H. M., and D. A. Ahmed, "Evaluation of In Silico and In Lab Sample Enrichment Techniques for the Assessment of Challengeable Quaternary Combination in Critical Ratio", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. Volume 260, pp. 119943, 2021. in_silico_1-s2.0-s1386142521005205-main.pdf
2020
Lotfy, H. M., S. S. Saleh, and C. M. El-Maraghy, "Advanced approaches for the treatment and amplification of weakspectral signals produced by critical concentrations in whitemulticomponent systems", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 224, pp. 117339, 2020.
Lotfy, H. M., M. S. Elshahed, and D. Mohamed, "The concept of Relative Absorptivity Distribution for enhancingdisbanding power of spectrophotometric technique to resolveco-formulated tablets: A tool for purity index and uniformity assessment", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 239 , vol. 239, pp. 118551, 2020.
Lotfy, H. M., and Nesma.M.Fahmy, "Coupling of liquid-liquid extraction and mathematical filtrationtechniques for the separation and quantification of five components insemisolid dosage form with severely overlapped spectra", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 235, pp. 118299, 2020.
2019
M.Lotfy, H., and S. S.Salah, "Investigating Advanced Approaches Based on Iso-Absorptivity Coefficient in Unresolved Spectral Signals of Binary Mixtures", Journal of Analytical Methods in Chemistry , vol. 1-10, pp. Article ID 7924821, 2019.
M.Lotfy, H., "Novel univariate spectrophotometric determination of the recently released solid dosage form comprising dapagliflozin and saxagliptin via factorized response spectra: Assessment of the average content and dosage unit uniformity of tablets", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. Volume 222, issue 117120, 2019.
M.Lotfy, H., M. K. A. Rahman, S. A. F. Weshahy, and D. A.Ahmed, "Smart Spectral Processing of Data for the estimation of Commonly Used Over-the-counter (OTC) Co-formulated drug; Pseudoephedrine hydrochloride and Ibuprofen", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. Volume 223, 5 December 2019, , issue 117322, pp. 1-10, 2019.
Lotfy, H. M., M. K. A. Rahman, S. A. F. Weshahy, and D. A.Ahmed, "Study of efficiency and spectral resolution for mathematical filtration technique using novel unlimited derivative ratio and classical univariate spectrophotometric methods for the multicomponent determination-stability analysis", Heliyon, vol. 5, issue 5, pp. e01669, 2019.
2017
Lotfy, H. M., and S. S. Saleh, "ADVANCED AMPLITUDE CENTERING AS AN INVIGORATING MANIPULATION FOR UNIFIED WAVELENGTH SPECTRAL RESOLUTION OF TERNARY MIXTURES", International Journal of Pharmacy and Pharmaceutical Sciences, vol. Vol 9,, , issue Issue 5, pp. 43-50, 2017. advanced_amplitude_modulation_16960-87563-2-pb_1_1.pdf
2016
Lotfy, H. M., Y. M. Fayz, S. El-Hanboushy, and M. Abdelkawy, "Application of Successive and Progressive Spectrophotometric Resolution for the Analysis of Partially or Completely Overlapping Ternary Mixtures ", Analytical Chemistry Letters, vol. 6, issue 6, pp. 718-737 , 2016.
and, H. M. L., S. H. E. R. E. E. N. M. O. S. T. A. F. A. TAWAKKOL, N. E. S. M. A. M. A. H. M. O. U. D. FAHMY, and M. O. S. T. A. F. A. A. B. D. E. L. - A. T. T. Y. SHEHATA, "Comparative Study of the Resolution Efficiency of High-performance Liquid Chromatographic and Chemometrics-assisted UV Spectrophotometric Methods: Application on Pharmaceutical Mixtures ", Analytical Chemistry Letters, vol. 6, issue 3, pp. 205 – 213 , 2016.
Lotfy, H. M., A. M. Michael, C. K. Nessim, and yasmin mohamed fayez, "Comparative study of the resolution efficiency of HPLC and HPTLCdensitometric methods for the analysis of mebeverine hydrochloride and chlordiazepoxide in their binary mixture", European Journal of Chemistry , vol. 7, issue 3, pp. 315‐321 , 2016.
Lotfy, H. M., Y. M. Fayez, M. Abdelkawy, and E. M. Morgan, "Comparative Study of the Spectral Resolution Efficiency of the Recently Developed and Conventional Spectrophotometric Methods in the Analysis of Severely Overlapped Zero-Order Absorption Spectra with the Same Geometrical Features", Analytical Chemistry Letters , vol. 6, issue 5, pp. 540-560, 2016.
Shendy, A. H., M. A. Al-Ghobashy, S. G. A. A. a, and H. M. Lotfy, "Development and validation of a modified QuEChERS protocol coupled to LC–MS/MS for simultaneous determination of multi-class antibiotic residues in honey", Food Chemistry , vol. 190, pp. 982-989, 2016.
Sohair A. Gad Alla, M. A. Al-Ghobashy, H. M. Lotfy, and A. H. Shendy, "Development and validation of a modified QuEChERS protocol coupled to LC–MS/MS for simultaneous determination of multi-class antibiotic residues in honey", Food Chemistry , vol. 190, pp. 982–989, 2016.
Lotfy, H. M., M. A. Al-Ghobashy, and M. A. Abdallah, "Development and Validation of Stability Indicating Spectrophotometric Methods for Determination of Sulbutiamine in Tablet Dosage Form", Analytical chemistry Letters , vol. 6, issue 2, pp. 159 - 173 , 2016.
Hegazy, M. A., S. Mowaka, E. H. Mohamed, and H. M. Lotfy, "Evaluation of the efficiency of continuous wavelet transform as processing and preprocessing algorithm for resolution of overlapped signals in univariate and multivariate regression analyses; an application to ternary and quaternary mixtures", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 164 , pp. 15–23, 2016.
Lotfy, H. M., E. Noaman, and M. A. Al-Ghobashy, "Investigation of the Profile and Kinetics of Degradation of Fenticonazole Nitrate using Stability-indicating HPLC Assay in Presence of Methyl and Propyl Parabens: Application to Preformulation Studies ", Analytical Chemistry Letters , vol. 6, issue 6, pp. 850-862, 2016.
·, H. L. M., S. Mowaka, M. A. Hegazy, and E. H. Mohamed, "Novel Pure Component Contribution Algorithm (PCCA) and UHPLC Methods for Separation and Quantification of Amlodipine, Valsartan, and Hydrochlorothiazide in Ternary Mixture", Journal of AOAC International , vol. 10.5740/jaoacint.16-0195 , 2016.
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