Advances in Analytical Chemistry

Advances in Analytical Chemistry is a peer-reviewed research journal that is devoted to the dissemination of new and original knowledge in all branches of analytical chemistry. The journal publishes features and news articles about major advances, trends, and challenges in analytical chemistry. These articles include peer-reviewed features written by researchers and news stories that discuss novel analytical concepts and instruments.


Fathalla Belal

Editorial Board Member of Advances in Analytical Chemistry

Professor, Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy. Mansoura University, Egypt

Research Areas

Pharmaceutical Analysis

Education

1983Ph.DPharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
1978M.ScPharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
1973B.ScPharmacy, Honor, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt

Experience

2010-presentProfessor of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
2009-2010 Head of the Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
2008Visting Professor at the Institute of Pharmaceutical Chemistry, Wurzburg University, Germany, conducting researches on Capillary electrophoresis in pharmaceutical analysis
2005-2009 Professor of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
1997-2005Deputized Professor at the Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
1996-1997Vice Dean For Students Affairs, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
1995-1996Professor of Analytical Chemistry, Faculty of Pharmacy, University of Mansoura
1994-1995Head of the Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, University of Mansoura
1994Professor of Analytical Chemistry, Faculty of Pharmacy, University of Mansoura
1992-1994Deputized Professor of Pharm. Anal. Chem., Faculty of Pharmacy, Al-Arab Medical University, Benghazi, Libya
1992-1992Professor of Analytical Chemistry, Faculty of Pharmacy, University of Mansoura
1991-1992Associate Professor of Analytical Chemistry, Faculty of Pharmacy, University of Mansoura
1989-1991Alexander von Humboldt Scholar, conducting research in the field of voltammetry and its applications in pharmaceutical analysis, in the "Institut fur Pharmazeatische Chemie, Johann-Wolfgang Goethe Universitat at Frankfurt am Main, Germany
1988-1989Associate Professor, Faculty of Pharmacy, University of Mansoura
1998Visiting Associate Professor, Faculty of Pharmacy, University of Shizuoka, Shizuoka, Japan, conducting research in the field of HPLC
1988Associate Professor, Faculty of Pharmacy, University of Mansoura
1987Visiting Associate Professor at the School of Pharmaceutical Chemistry, University of Bradford, Bradford, England, conducting research in the field of HPLC
1987Associate Professor, Faculty of Pharmacy, University of Mansoura

Academic Achievement

Agency of International Development (AID) Research Fellowship at the University of Georgia, Athen, GA, USA (Jan. 1984 to Jan. 1985)
British Council Research Fellowship at the University of Bradford, UK (July to Sept. 1987)
Shizouka Prefecture Research Fellowship at the University of Shizouka, Japan (June to Aug. 1988).
Alexander von Humboldt Research fellowship, at Goethe University, Frankfurt am Main, Germany (Jan. 1989-Jan 1991)
The State Prize of Medical Sciences, The Academy of Scientific Research and Technology, Cairo, Egypt (1995)

Publications: Conferences/Workshops/Symposiums/Journals/Books

[1]  Evaluation of Certain Pharmaceuticals with Dibromodimethyl Hydantoin, Part I: Determi-nation of Sulphonamides.A. Abou-Ouf, M.I. Walash, M. Rizk, and F. Belal.Egypt J. Pharm. Sci., 18, 101 (1977).
[2]  Evaluation of Certain Pharmaceuticals with Dibromodimethyl Hydantoin, Part II: Determination of Analgesics. M.I. Walash, M. Rizk, F. Belal, and A. Abou-Ouf. Pharmazie, 34, 234 (1979).
[3]  Evaluation of Certain Pharmaceuticals with Dibromodimethyl Hydantoin, Part III: Determination of Vitamins and Local Anaesthetices. A. Abou-Ouf, M.I. Walash, M. Rizk and F. Belal.J. Drug. Res. Egypt, 11, 81 (1979).
[4]  Determination of Phenindione Using Organic Brominating Agents.A. Abou-Ouf, M.I. Walash, M. Rizk, and F. Belal. Analyst, 104, 566 (1979).
[5]  Evaluation of Certain Pharmaceuticals with Dibromodimethyl Hydantoin, Part V: Deter-mination of Penicillins M. Rizk, M.I Walash, A. Abou-Ouf, and F. Belal. Anal. Lett., 14, 1407 (1981).
[6]  Titrimetric Determination of Some N-Substituted Phenothiazine derivatives. M.I. Walash, M. Rizk, A. Abou-Ouf, and F. Belal. Analyst, 108, 626 (1983).
[7]  Determination of Some Quinoline Derivatives with Organic Brominating Agents.M.I. Walash, M.Rizk, A Abou-Ouf and F. Belal. Anal. Lett., 16, 129 (1983).
[8]  Folin-Ciocalteu Reagent as a Novel Reagent for the Detection of Phenothiazine Drugs. F. Belal.Pharmazie, 38, 11, 788 (1983).
[9]  Spectrophotometric Determination of Amoxycillin in Dosage Forms. F. Belal. Anal. Lett., 16, 1555 (1983).
[10]  Use of 2, 6-Dichloroquinone Chlorimide for the Spectrophotometric Determination of Halogenated Derivatives of 8-Hydroxyquinoline.F. Belal . Analyst, 109, 615 (1984).
[11]  Polarographic Behavior and Determination of Penicillins after Bromometric Oxidation. M. Rizk, M.I. Walash, A Abou-Ouf and F.Belal.Pharm. Weekblad. Sci. Ed., 6, 114 (1984).
[12]  Spectrophotometric Determination of Halogenated 8-Hydroxyquinoline Derivatives.F. Belal.Talanta, 31, 648 (1984).
[13]  Utility of Dihaloquinone Chlorimides for the Determination of Phenazopyridine. F. Belal, and M. Metwally. Anal. Lett., 17, 1637 (1984).
[14]  Flow-Injection Analysis of Three N-Substituted Phenothiazine Drugs with Amperometric Detection at a Carbon-Fibre. Array Electrode.F. Belal and J.L. Anderson. Analyst, 110, 1493 (1985).
[15]  Amperometric Determination of Phenazopyridine Hydrochloride in a Flowing Stream at the Glassy Carbon Electrode. F. Belal. J. Assoc. Off. Anal. Chem., 68, 1207 (1985).
[16]  Flow-Injection Analysis of Warfarin Sodium with Amperometric Detection. F. Belal and J.L. Anderson.Mikrochim. Acta., 11, 145 (1985).
[17]  Spectrophotometric Determination of Benzothiadiazines in Dosage Forms.F. Belal, M. Rizk, F. Ibrahiem and M. Sharaf El-Din Talanta, 33, 170 (1986).
[18]  Simultaneous Spectrophotometric Determination of Strychnine and Yohimbine in Pharmaceutical Preparations. O.Salama and F. Belal.Analyst, 111, 581 (1986).
[19]  Flow Injection Determination of Ergonovine Maleate with Amperometric Detection at the Kel-F-Graphite Composite Electrode.F. Belal and J.L. Anderson.Talanta, 33, 448 (1986).
[20]  Tetracyanoethylene in Pharmaceutical Analysis. Part I: A Spectrophotometric Determina-tion of some Pharmaceutically Important Hydrazine and Pyrazolone Derivatives. F. Ibraheim; M. Rizk and F. Belal.Analyst 111, 1285 (1986).
[21]  Spectrophotometric Determination of Pyrithioxin in Dosage. Forms. F. Belal, M. Sharaf El-Din and S.M. Hassan.Anal. Lett., 19, 1533 (1986)
[22]  Spectrophotometric Determination of the Major Metabolite of Phenytoin, 5-(p Hydroxy-phenyl)-5-Phenylhydantoin, in Human Urine.M.A.A. Mustafa, F. Belal and A.A. El-Emam.J. Pharm. Belg., 42, 53 (1987).
[23]  Spectrophotometric Determination of Some Pharmaceutically-Important Thione Com-pounds. M. Sharaf El-Din; F. Belal and S.M. Hassan.Zentrbl. Pharm., 127, 133 (1988).
[24]  Simultaneous High Performance Liquid Chromatographic Determination of Phenazo-pyridine and Nitrofurantoin in Tablets.F. Belal.Chromatographia, 25, 61 (1988).
[25]  Evaluation of Certain Pharmaceuticals with Hexaminecobalt(III)-tricarbonatocobal-tate(III). Part I: Determination of Some N-Substituted Phenothiazine Derivatives.M.I. Walash, F. Belal and F.A. Aly.Talanta, 35, 320 (1988).
[26]  Evaluation of Certain Pharmaceuticals with Hexaminecobalt (III) Tricarbonato-cobaltate(III). Part II: Potentiometric Determination of Some Antimony (III) Compounds.M.I. Walash, F. Belal and F.A. Aly.Analyst, 113, 955 (1988).
[27]  Bromometric Determination of Benzothiadiazine Diuretics in Dosage Forms.F. Belal, F. Ibrahim and A. El-Brashy.Analyst, 113, 637 (1988).
[28]  Titrimetric Determination of Acetylenic Hypnotics Using Organic Brominating Agents.A. El-Brashy, F. Belal, M.I. Walash and M. Rizk. Pharm. Weekbld. Sci. Ed., 10, 90 (1988).
[29]  Spectrophotometric Determination of Some Pharmaceutically Important Nitro Compounds in Their Dosage Forms.S.M. Hassan, F. Belal, M. Sharaf El-Din and M. Sultan.Analyst, 113, 1087 (1988).
[30]  Simultaneous Spectrophotometric Determination of Phenazopyridine and Nitrofurantoin in Tablets. S.M. Hassan, F. Belal, M. Sharaf El-Din and M. Sultan.Anal. Lett., 21, 1199 (1988).
[31]  Simultaneous Spectrophotometric Determination of Furazolidone and Berberine in Tablet Form.S.M. Hassan, F. Belal and M.Sultan. Talanta, 35, 977 (1988).
[32]  Application of Difference Spectroscopy to the Determination of Some Pharmaceutically-Important Nitro Compounds. S.M. Hassan; M. Sharaf El-Din; F. Belal and M. Sultan.J. Pharm. Pharmacol., 40, 798 (1988).
[33]  Direct Current Polarographic Determination of Chlorprothixene and Thiothixene after Bromination. M.I. Walash, Rizk M, F. Belal & A. El-Brashy.Microchem. J., 38, 300 (1988).
[34]  Hexamminecobalt (III) Tricarbonatocobaltate as a Redox Titrant for the Determination of Some Thioxanthene Derivatives.F. Belal, M.I. Walash and F.A. Aly.Microchem. J., 38, 295 (1988).
[35]  Fluorimetric Determination of Reserpine in Dosage Forms.M.I. Walash, F. Belal, and F.A. Aly.Talanta, 35, 731 (1988).
[36]  Spectrophotometric Determination of Some Pharmaceutically Important Aminoquinoline Antimalarials.F. Ibrahim, A. El-Brashy and F. Belal.Mikrochem. Acta., I, 321 (1989).
[37]  Fluorimetric Determination of Some Aminoquinoline Antimalarials Using Eosin.F.A. Ibrahim, F. Belal and A. El-Brashy.Microchem. J., 39, 65 (1989).
[38]  Fluorometric Determination of Some Thioxanthene Derivatives in Dosage Forms.S.M. Hassan, F. Belal, F. Ibrahim and F.A. Aly.Talanta, 36, 557 (1989).
[39]  Ion-Pairing High Performance Liquid Chromatographic Determination of Pyridoxine and Pyrithioxine in Dosage Forms F. Belal.Anal. Lett., 22, 1897 (1989).
[40]  Fluorometric Determination of Some a-Amino Penicillins.F. Belal, A. El-Brashy and F. Ibrahim.Microchem. J., 39, 106 (1989).
[41]  Colorimetric Determination of Some N-Substituted Phenothiazine Derivatives Using 2 Iodoxybenzoate.S.M. Hassan, F. Belal, F. Ibrahim and F.A. Aly.Anal. Lett., 22, 1485 (1989).
[42]  High Performance Liquid Chromatographic Determination of Yohimbine and Strychnine in Dosage Forms.F. Belal, M. Sano and I. Tomita.Chem. Pharm. Bull (Japan) 37, 1622 (1989).
[43]  Bromometric Determination of Some Pharmaceutically-Important Antimony(III) Compounds.F. Belal, F. Ibrahim and A. El-Brashy.Microchem. J., 41, 340, (1990).
[44]  Spectrophotometric Determination of Some Psychotropic Drugs in Two-Component Mix-tures.F. Belal, F. Ibrahim, S.M. Hassan and F.A. Aly.Microchem. J., 41, 305 (1990).
[45]  Titrimetric Determination of Some Penicillins Using 2-Iodoxybenzoate. F. Belal, A. El-Brashy and F. Ibrahim.J. Assoc. Off. Anal. Chem., 73, 896 (1990).
[46]  Polarographic Behaviour and Determination of Flumequine.F. Belal and M. Sharaf El-Din.Microchem. J., 42, 300 (1990).Spectrophotometric Determination of Some MAO Inhibitors Using 7, 7, 8, 8 Tetracynoqui-nodimethane and Iodine Monochloride.F. Ibrahim, F. Belal, S.M. Hassan and F.A. Aly.J. Pharm. Biomed. Anal., 9, 101 (1991).
[47]  Polarographic Behavior and Determination of Glafenine.F. Belal.Microchem. J., 43, 149 (1991).
[48]  Anodic Polarographic Behaviour and Determination of Pyrithioxin.F. Belal.Acta Pharm. Jugosl., 41, 129 (1991).
[49]  Anodic Polarographic Determination of the Acetylenic Hypnotics Ethinamate and Methylpentynol Carbamate in Dosage Forms. F. Belal. J. Assoc. Off. Anal. Chem., 74, 592 (1991).
[50]  N, N-Dibromodiethylbarbituric Acid as an Analytical Reagent. Part I. Determination of Some Pharmaceutically-Important Hydrazine Derivatives.F. Belal, F. Ibrahim, M. Sharaf El-Din and M.F. El-Taras.Analyst, 116, 1085 (1991).
[51]  Spectrofluorimetric Determination of Some Pharmaceutically-Important Thioxanthene Derivatives.F. Belal, F. Ibrahim, S.M. Hassan and F.A. Aly.Anal. Chim. Acta, 255, 103 (1991).
[52]  Polarographic and Spectrophotometric Determination of Isocarboxazid and Tranyl-cypromine Sulphate Through Treatment with Nitrous Acid.Fathalla Belal, Fawzia A. Ibrahim, Sayed M. Hassan and F.A. Aly.Kikrochim. Acta., III, 61 (1991).
[53]  Analytical Application of Dibromodiethylbarbituric Acid for the Determination of Some Pharmaceutically Important Antimony (III) Compounds.F. Belal, F. Ibrahim, M. Sharaf El-Din and M.F. El-Taras.Microchem. J., 44, 296 (1991).
[54]  Polarographic Determination of N-Acetyl-L-Cysteine in Pharmaceutical Preparations.F. Belal, M. Metwally and M.A. Mustafa.J. Pharm. Belg., 46, 320 (1991).
[55]  Analytical Profile of Iproniazid Phosphate. Monograph in "Analytical Profile of Drug Substances". Editor: H.G. Britain. Academic Press, N.Y. Vol. 20, 337 (1991).F. Belal and H.A. Abdel-Alim.
[56]  The Polarographic Behaviour of Cinolazepam [1-(2-Cyanoethyl)-7-chloro-3-hydroxy-5-(2-fluorophenyl)-1, 3-dihydro-2H-1-4-Benzodia-zep-ine-2-one] and Assay of its Tablets.H. Oelschlager, J. Volke and F. Belal.Arch. Pharm., 325, 65 (1992).
[57]  Primaquine Phosphate as a Promising Substitute for N-(1-Naphthyl) ethylenediamine. I-Determination of Nitritre in Natural Waters in Egypt.M. Metwally and F. Belal.Anal. Sci., 8, 71 (1992).
[58]  Simultaneous Polarographic Determination of Ascorbic Acid and Dipyrone in Pharmaceutical Preparations.F. Belal.Electroanal., 4, 589 (1992).
[59]  Polarographic Behaviour and Determination of Spironolactone.F. Belal.Microchim. Acta, 107, 11 (1992).
[60]  Ringverengung von 1, 4-Benzodiazepinen zu 3, 4-Dihydrochinazolinen bei Praparativer Electrolyse (Beispiel 5: Cyprazepam)H. Oelschlager, D. Martinssen and F. Belal.Arch. Pharm., 325, 503 (1992).
[61]  Polarographic Behaviour and Determinaiton of Azintamide.F. Belal.Microchim. Acta, 108, 329 (1992).
[62]  Application of High Perforance Liquid Chromatography to the kinetic study of a-Methyl-dopa.M. Metwally and F. Belal.J. Chromatogr., 623, 75 (1992).
[63]  Determination of 1, 4-Benzodiazepines in Drug Dosage Forms by Difference Spectropho-tometry.A. El-Brashy, F.A. Aly and F. Belal.Mikrochim. Acta, 110, 55 (1993).
[64]  2-Iodoxybenzoate as a Titrant for the Determination of Some Pharmaceutically-Important Thiol Compounds.M.S. Rizk, F. Belal and M.M. Eid.Acta. Pharm. Hung., 63, 13 (1993).
[65]  Spectrophotometric Determination of Rifampin in the Presence of its Degradation Products in Pharmaceutical Preparations.M.I. Walash, F. Belal, M.E. Metwally and M.M. Hefnawy, Anal. Lett., 26, 1905 (1993).
[66]  Polarographic Determination of Metyrosin Through Treatment with Nitrous Acid.F.A. Aly, F. Belal and A. El-Brashy Pharm. World and Sci., 15, 208 (1993).
[67]  Spectrophotometric Determination of Manib and Zineb and their Degradatioin Products in Some Vegetables and its Application to Kinetic Studies after Greenhouse Treatment. M.I. Walash, F. Belal, M. Metwally and M. Hifnawy. Food Chemistry, 47, 411 (1993).
[68]  Conductometric Determination of Some Pharmaceutically-Important Thiol Compounds in Dosage Forms.M.S. Rizk, F. Belal and M.M. Eid.Acta. Pharm. Hung., 63, 313 (1993).
[69]  The Polarographic Behavior of the Antitumour Agent Tauromustine and Assay of its Tab-lets.F. Belal.Electroanal., 5, 605 (1993).
[70]  Fluorometric Determination of Tauromustine [A Novel Antitumour Agent] in Formula-tions and Biological Fluids.A.I. Walash, F. Belal, M.E. Metwally and M.M. Hefnawy. J. Pharm. Biomed. Anal., 11, 777 (1993).
[71]  Conductometric Determination of Some Nonsteroidal Antiinflammatory Drugs in Dosage Forms.F.A. Aly and F. Belal.Pharmazie, 49, 454 (1994).
[72]  Spectrofluorimetric Determination of Reserpine in Pharmaceutical Preparations and Biological fluids. F.A. Aly, A. El-Barshy and F. Belal.Anal. Chim. Acta, 291, 141 (1994).
[73]  Polarographic Behaviour and Determination of Beclomethasone Dipropionate.M.I. Walash, F. Belal, M. Metwally and M. Hefnawy.Mikrochim. Acta, 112, 217 (1994).
[74]  Colorimetric Determination of Prenalterol Hydrochloride in Dosage Forms.F.A. Aly, F. Belal and M.I. Walash.J. Pharm. Biomed. Anal., 12, 955 (1994).
[75]  Conductometric Determination of Some Acetylenic Hypnotics in Dosage Forms.F.A. Aly, A. El-Brashy and F. Belal.Pharmazie., 49, 699 (1994).
[76]  Application of High-Performance Liquid Chromatography in the Determination of Tauromustine in Presence of its Metabolites and Degradation Products.M.I. Walash, F. Belal, M. Metwally and M. Hefnawy.J. Liquid Chromatog., 17, 1579 (1994).
[77]  A Selective Fluorometric Method for the Determination of 1, 4-Benzodiazepinss Containing Hydroxyl Group at C # 3.M.I. Walash, F. Belal, M. Metwally and M. Hefnawy.J. Pharm. Biomed. Anal., 12, 1417 (1994).
[78]  Spectrophotometric Determination of Cefadroxil and Metyrosin in Dosage Forms.F.A. Aly, M.I. Walash and F. Belal.Anal. Lett., 27, 2677 (1994).
[79]  Polarographic Behaviour and Determination of Oxamniquine.F. Belal and F.A. Aly.Electroanal., 7, 483 (1995).
[80]  Polarographic Determination of Prenalterol Hydrochloride Through Treatment with Nitrous Acid.F.A. Aly, F. Belal and M.I. Walash.J. Pharm. Biomed. Anal., 13, 1127 (1995).
[81]  A Rapid Spectrofluorimetric Method for the Determination of Metyrosine in Formulations and Dosage Forms.M.H. Hefnawy, F.A. Aly and F. Belal.Anal. Lett., 28, 1811 (1995).
[82]  A Selective Spectrofluorimetric Method for the Determination of-Aminocephalos-porins in Formulations and Biological Fluids.M.M. Hefnawy, F.A. Aly and F. Belal.Anal. Lett., 29, 117 (1996).
[83]  Spectrophotometric Determination of Benzalkonium Chloride in Dosage Forms Through Charge-Transfer Complexation.F. Belal, M.I. Walash, F.A. Aly and A.O. Musbah.Anal. Lett., 30, 1321 (1997).
[84]  Fluorimetric Determination of Nalidixic Acid in Formulations and Biological Fluids Through Ternary Complex Formation.M.Rizk, F. Belal, F.A. Aly and N.M. El-Enany.Anal. Lett., 30, 1897 (1997).
[85]  A Review: Methods of Analysis of Pharmaceutically Important Thioxanthene Derivatives.F. Belal, M. Hefnawy and F.A. Aly.J. Pharm. Biomed. Anal., 16, 369 (1997).
[86]  Analytical Profile of Tranylcypromine Sulphate, a Monograph in "Analytical Profile of Drug Substances and Excipients", Editor H.G. Brittain, Academic Press, N.Y. Vol. 25, 501 (1998).H. Abdel-Aleem, A.B. El-Eshmawy, F. Belal, A. El-Emam and H.G. Brittain. Differential Pulse Polarographic Determination of Ofloxacine in Pharmaceuticals and Biological Fluids.M. Rizk, F. Belal, F.A. Aly and N. El-Enany.Talanta 46, 83 (1998).
[87]  Reaction of Electrogenerated Oxamnquine Radical Anion with Glutathione.A. Radi and F. Belal.Electroanal. Chem., 44, 39 (1998).
[88]  Polarographic Determination of Some Penicillins Through Treatment with Nitrous Acid. F. Belal, M.S. Rizk and M. Eid.J. Pharm. Biomed. Anal., 17, 275 (1998).
[89]  Determination of Ethylenediaminetetra acetic acid EDTA in Certain Pharmaceutical Preparations Using Flame Atomic Absorption Spectroscopy.F. Belal, M.I. Walash, F.A. Aly, I. Kenawy and A.M. Osman.IL Farmaco, 53, 365 (1998).
[90]  Polarographic Determination of EDTA in Certain Pharmaceutical Preparations.F. Belal, F.A. Aly, M.I. Walash and A.M. Osman.J. Pharm. Biomed. Anal. 17, 1249 (1998).
[91]  Fluorimetric Determination of Oxamniquine in Biological Fluids.M. Rizk, F. Belal, F. Ibrahim, S.M. Ahmed and N.M. El-Enany.IL Farmaco, 54, 47 (1999).
[92]  Conductometric Determination of Some Pharmaceutically-Important 4-Quinolone Derivatives.F. Belal, M. Rizk, F.A. Aly, and N. El-Enany.Chem. Anal. 44, 763 (1999)
[93]  Voltammetric Determination of the N-Nitrosoderivatives of Atenolol and Propranolol in Simulated Gastric Juice.F. Belal, O.A. Al-Deeb; A.A. Al-Majed and E.A.R. Gad-Kariem.Il Farmaco 54(10), 700-704 (1999).
[94]  Analytical Profile of Isoxsuprine HCl, a Monograph in "Analytical Profile of Drug Substances and Excipients", Editor, H.G. Brittain, Academic Press, N.Y. F. Belal, A.A. Al-Badr, A. Al-Majed and H.I. El-Subbagh.26, 359-393 (1999).
[95]  9Analytical Profile of Diloxanide Furoate, a Monograph in "Analytical Profile of Drug Substances and Excipients", Editor H.G. Brittain, Academic Press, New York.Al-Majed; F. Belal and A.A. Al-Badr. 26, 247-282 (1999).
[96]  Voltammetric Behaviour and Determination of Nizatidine in Biological Fluids.A.A. Al-Majed, F. Belal, A.M. Al-Obaid and A.H. Dawoud.J. Pharm. Biomed. Anal. 21(2) 319-326 (1999).
[97]  A Review: Methods of Analysis of 4-Quinolone Antibacterials.F. Belal, A. Al-Majed and A.M. Al-Obaid.Talanta 50, 765-786 (1999).
[98]  Spectrofluorimetric Determination of Alpha Aminocephalosporins in Biological Fluids and Pharmaceutical Preparations.M. Hefnawy, Y. El-Shabrawy and F. Belal.J. Pharm. Biomed. Anal. 21, 4703-4707 (1999).
[99]  Fluorimetric Determination of Some Thioxanthene Derivatives in Dosage Forms and Biological Fluids.I.M. Shehata, S.M. El-Ashray, M. El-Sherbeny, D.T. El-Sherbeny and F. Belal.J. Pharm. Biomed. Anal. 22, 717-727 (2000).
[100]  Spectrofluorimetric Analysis of Certain 4-Quinolones in Pharmaceuticals and Biological Fluids.M. Rizk, F. Belal, F. Ibrahim, S. Ahmad and N. El-Enany.Pharm. Acta. Helv. 74(4), 371-377 (2000).
[101]  Polarographic Determination of Some 4-Quinolone Antibacterials via their Ni (II)-Complexes.M.S. Rizk, F. Belal, F.A. Ibrahim, S.M. Ahmad and Z.A. Sheribah.Electroanal. 12(7), 531-534 (2000).
[102]  A Simple Kinetic Spectrophotometric Method for the Determination of Certain 4 Quinolones in Drug Formulations. M. Rizk, F. Belal, F. Ibrahim, S.M. Ahmad and N.M. El-Enany.Sci. Pharm. 68, 173 (2000).
[103]  The Voltammetric Study and Determination of Ramipril in Dosage Forms and Biological Fluids.A.A. Al-Majed; F. Belal; A. Abadi and A.M. Al-Obaid.Il Farmaco 55, 233 (2000).
[104]  Use of Mixed Anhydrides for the Determination of Terfenadine in Dosage Forms and Spiked Human Plasma.A.A. Al-Majed, J. Al-Zehouri and F. Belal.J. Pharm. Biomed. Anal. 23, 281-289 (2000).
[105]  A Simple Kinetic Spectrophotometric Method for the Determination of Oxamniquine in Formulations and Spiked Biological Fluids.M. Rizk, F. Belal, F. Ibrahim, S.M. Ahmad and N.M. El-Enany.J. Pharm. Biomed. Anal. 23, 503-513 (2000).
[106]  A Stability-indicating Spectrophotometric Method for the Determination of Fenoterol in Pharmaceutical Preparations.H.A. Al-Malaq, A.A. Al-Majed and F. Belal.Anal. Lett. 33(10), 1961-1974 (2000).
[107]  Voltammetric Determination of Isoxsuprine and Fenoterol in Dosage Forms and Biological Fluids Through Nitrosation.F. Belal, H.A. Al-Malaq and A.A. Al-Majed.J. Pharm. Biomed. Anal. 23(6), 1005-1015 (2000).
[108]  Voltammetric Analysis of Certain 4-Quinolones in Pharmaceuticals and Biological Fluids.M. Rizk, F. Belal, F. Ibrahim, S. Ahmad and N. El-Enany.J. Pharm. Biomed. Anal. 24(2), 211-218 (2000).
[109]  Differential-Pulse Polarographic Determination of Some N-Substituted Phenothiazine Derivatives Through Treatment with Nitrous Acid.F. Belal; S.M. Al-Ashry; I. Shehata; M.A. El-Sherbeny and D.T. Sherbeny.Mikrochim. Acta 135, 147 (2000).
[110]  Spectrophotometric Determination of Some Phenolic Antibiotics in Dosage Forms.S.M. El-Ashry, F. Belal, M. El-Kerdawy and D.R. El-Wasseef.Mikrochim. Acta 135, 191 (2000).
[111]  Spectrophotometric Determination of Benazepril in Tablets.F. Belal, I.A. Al-Zaagi and M.A. Abounassif.Il Farmaco 55, 425 (2000).
[112]  Derivative UV Spectrophotometric Analysis of Some Pharmaceutically-important Halogenated 8 Hydroxyquinoline Derivatives via their Pd(II) Complexes.M. Rizk, F. Belal, F. Ibrahim, S.M. Ahmed and Z.A. Sheribah.Sci. Pharm. 68, 297 (2000).
[113]  Conductimetric Determination of Some Drugs Acting on the Central Nervous System.S.M. El-Ashry; I.A. Shehata; M.A. El-Sherbeny, D.T. El-Sherbeny and F. Belal.Chem. Anal. 45, 859 (2000).
[114]  A Stability-Indicating High Performance Liquid Chromatographic Method for the Determina;tion of Isoxsuprine in Dosage Forms. Application to Kinetic Studies of Isoxsuprine.F. Belal; H.A. Al-Malaq; A.A. Al-Majed and E.A. Gadkariem.J. Liq. Chromatogr. Relat. Technol.23(20), 3175-3189 (2000).
[115]  Kinetic Spectrophotometric Determination of Amoxicillin and Ampicillin in Dosage Forms.F. Belal, M. El-Kerdawy, S.M. El-Ashry and D.R. El-Waseef.Il-Farmaco 55, 680-686 (2000).
[116]  Voltammetric Determination of N, N'-Dinitrosopiperazine in Simulated Gastric Juice.F. Belal, M.I. Walash, F. Ibrahim, M. Hefnawy and M. Eid.Il Farmaco 55, 680-686 (2000).
[117]  A Stability-indicating High Performance Liquid Chromatographic Method for the Simultaneous Determination of Ramipril and Hydrochlorothiazide in Dosage Forms.F. Belal; I.A. Al-Zaagi; E.A. Gad Kariem and M.A. Abounassif.J. Pharm. Biomed. Anal. 24(3), 335-342 (2001).
[118]  Determination of the Antiepileptics Vigabatrin and Gabapentin in Dosage Forms and Biological Fluids Using Hantzsch Reaction.J. Al-Zehouri, S. Al-Madi and F. Belal.Arzeneim. Forsch. 51 (2), 97-103 (2001).
[119]  Spectrophotometric Determination of Ramipril [A Novel ACE Inhibitor] in Dosage Forms.A.A. Al-Majed, F. Belal and A.A. Al-Warthan.Spectroscop. Lett. 34, 211-220 (2001).
[120]  Voltammetric Determination of Benazepril and Ramipril in Dosage Forms and Biological Fluids Through Nitrosation.F. Belal; I.A. Al-Zaagi and M.A. Abounassif.J. Assoc. Off. Anal. Chem. International 84, 1-8 (2001).
[121]  Derivative Spectrophotometric Analysis of Some 4-Quinolone Antibacterials in Formulations and Spiked Biological Fluids via their Cu (II)-Complexes.M.S. Rizk, F. Belal, F.A. Ibrahiem, S.M. Ahmad and Z.A. Sheribah.J. Assoc. Off. Anal. Chem. International 84, 368-375 (2001).
[122]  Voltammetric Determination of Parthenolide in Spiked Human Plasma and Urine. F. Belal; A.M. Galal, A. Al-Majed and F.S. El-Feraly.Phytochem. Anal. 12, 250-254 (2001).
[123]  Voltammetric Determination of Praziquantel in Tablets and Biological Fluids.M. Rizk; F. Belal; F. Ibrahim; S.M. Ahmad and N. El-Enany.Arzeneim. Forsch. 51, 673-678 (2001).
[124]  Spectrofluorimetric Determination of Streptomycin in Dosage Forms and Biological Fluids Using 9, 10-Phenanthroquine.F. Belal; S.M. Al-Ashry, M. El-Kerdawy and D.K. El-Vaseef.J. Pharm. Biomed. Anal. 26, 435-441 (2001).
[125]  Spectrofluorimetric Determination of Vigabatrin and Gabapentin in Dosage Forms and Spiked Plasma Samples Through Derivatization with 4 Chloro-7-nitrobenzo-2-oxa-1, 3-diazole (NBD Cl).E.M. Hassan, F. Belal, O.A. Al-Deeb and N.Y. Khalil.J. Assoc. Off. Anal. Chem. International 84, 1097-1024 (2001).
[126]  Voltammetric Determination of Nilvadipine in Dosage Forms and Spiked Human Urine.F. Belal, H. Abdine and N. Zoman.J. Pharm. Biomed. Anal. 26, 585-592 (2001).
[127]  Spectrophotometric Determination of Diloxanide Furoate in Dosage Forms.S.M. Al-Khannam and F. Belal.Il Farmaco 56, 677-681 (2001).
[128]  Voltammetric Determination of Vancomycin in Dosage Forms Through Treatment with Nitrous Acid.F. Belal, S.M. El-Ashry, M. El-Kerdawy and D.A. El-Waseef.Arzeneim. Forsh. 51 (2001) 763-768.
[129]  LC Determination of Dinitrosopiperazine in Simulated Gastric Juice. M.I. Walash, F. Belal, F. Ibrahim; M. Hefnawy and M. Eid.J. Pharm. Biomed. Anal. 26 (2001) 1003-1008.
[130]  Stability Study of Nilvadipine in Bulk Drug and Pharmaceutical Capsules by High Performance Liquid Chromatography.H. Abdine; F. Belal; E.A. Gadkariem and N. Zoman.J. Liq. Chromatogr. Related Technol. 24 (2001) 3213.
[131]  Kinetic Spectrophotometric Determination of Nizatidine and Ranitidine in Pharmaceutical Preparations.E. Hassan and F. Belal.J. Pharm. Biomed. Anal. 27 (2002) 31-38.
[132]  Spectrofluorimetric Determination of Vigabatrin and Gabapentin in Urine and Dosage Forms Through Derivatisation with Fluorescamine.F. Belal; H. Abdine; A. Al-Majed and N.Y. Khalil.J. Pharm. Biomed. Anal. 27 (2002) 235-260.
[133]  Polarographic Behaviour and Determination of Acrivastine in Capsules and Human Urine.H. Abdine and F. Belal.Talanta 56 (2002) 97-104.
[134]  Simple Spectrophotometric Determination of Cinnarizine in its Single and Dosage Forms.H. Abdine; F. Belal and N. Zoman.IL Farmaco 57 (2002) 267-271.
[135]  LC Analysis of Pharmaceutically-Important halogenated 8 Hydroxyquinoles After Derivatization with Pd (II).M. Rizk, F. Belal; F. Ibrahim; S.M. Ahmed and Z. Sheribah.J. Pharm. Biomed. Anal. 27 (2002) 813-820.
[136]  A Simple Kinetic Spectrophotometric Method for the Determination of Isoxsuprine in Dosage Forms.N. El-Enany; F. Belal and M. Rizk.IL Farmaco 57 (2002) 641-648.
[137]  Voltammetric Analysis of Trazadone HCl in Pharmaceuticals and Biological fluids.N. El-Enany; F. Belal, and M. Rizk.J. Pharm. Biomed. Anal. 30 (2002) 219-226.
[138]  Anodic Polarographic Determination of Nilvadipine in Dosage Forms and Spiked Human Urine.F. Belal, H. Abdine and N. Zoman.Mikrochim. Acta. 140 (2002) 21 27.
[139]  Kinetic Spectrophotometric Determination of Atenolol in Dosage Forms.S.M. Al-Ghannam and F. Belal.J. Assoc. Off. Anal. Chem. International 85 (2002) 817 923.
[140]  Spectrophotometric Determination of Three Antiulcer Drugs Through Charge-Transfer Complexation.S.M. Al Ghanam and F. Belal.J. Assoc. Off. Anal. Chem. International 85 (2002) 1003 1008.
[141]  Voltammetric Determination of Josamycin (a Macrolide Antibiotic) in Dosage Forms and Spiked Human Urine.F. Belal, A. Al-Majed, K.E.E. Ibrahm and N.Y. Khalil.J. Pharm. Biomed. Anal. 30 (2002) 705 713.
[142]  Spectrofluorometric Determination of Labetalol in Pharmaceutical Preparations and Spiked Human Urine Through the Formation of Coumarin Derivative.F. Belal; S. Al-Shabouri and A. Al-Tamrah.J. Pharm. Biomed. Anal. 30 (2002) 1191 1196.
[143]  Kinetic Spectrophotometric Method for the Determination of Nizatidine and Ranitidine in Formulations.M.I. Walash, F. Ibrahim, F. Belal,, M. Hefnawy and M. Eid.J. Assoc. Off. Anal. Chem. International 85 (2002 1316 13.
[144]  Photodegradation Kinetic Studies and Stability-indicating Assay of Diloxanide Furoate in Dosage Forms and Urine Using High Performance Liquid Chromatography.E.A. Gadkariem; F. Belal; M.A. Abounassif, H.A. El-Obeid and K.E.E. Ibrahim.J. Liq. Chromatogr. Related Technol. 25 (2002) 2947 2964.
[145]  Analytical Profile of Edetic Acid (Ethylenediamine Tetraacetic Acid, EDTA) A Monograph in "Analytical Profiles of Drug Substances and Excipients" H.G. Brittain, editor, Vol. 29, Academic Press, NY (2002) 57 104.F. Belal and A. Al-Badr.
[146]  Analytical Profile of Spironolactone, A Monograph in "Analytical Prifiles of Drug Substances and Excipients", H.G. Brittain, Editor, Vol., 29, Academic Press, NY. (2002) 261 320.B. Alhedeya; F. Belal; Y. Asiri and O. Gabara.
[147]  Voltammetric Determination of Nitrosocimetidine in Simulated Gastric Juice.M.I. Walash, F. Belal; F. Ibrahim, M. Hefnawy and M. Eid.J. Clin. Pharm. Therapeutics. 27 (2002) 365-370.
[148]  Polarographic Behaviour and Determination of Benzydamine in Pharmaceutical Dosage Forms.N. El-Enany, S.M. Al Ghannam and F. Belal.Pharm. Ind. 65 (2003) 76 81.
[149]  Fluorimetric Determination of Gentamicin in Dosage Forms and Biological Fluids Through Derivatization with 4 Chloro-7-nitrobenzo-2-oxa-1, 3-diazole (NBD Cl).A.A. Al-Majed; F. Belal, M.A. Abounassif and N.Y. Khalil.Mikrochim. Acta 141 (2003) 1 6.
[150]  Spectrophotometric Determination of Labetalol in Pharmaceutical Preparations and Spiked Human Urine.F. Belal, S. Al-Shaboury and A.A. Al-Tamrah.IL Farmaco 58 (2003) 293 299.
[151]  Polarographic Determination of Lisinopril in Pharmaceuticals and Biological Fluids Through Treatment with Nitrous Acid.N. El-Enany, F. Belal and S.M. Al-Ghannam.Mikrochim. Acta. 141 (2003) 55 61.
[152]  Voltammetric Determination of Isradipine in Dosage Forms and Spiked Human Urine and Plasma. F. Belal; A. Al-Majed and S. Julkhuf.J. Pharm. Biomed. Anal. 31(2003) 989 998.
[153]  Kinetic Spectrophotometric Determination of Josamycin (A Macrolide Antibiotic) in Formulation.A. Al-Majed, F. Belal; K.E.E. Ibrahim and N.Y. Khalil.J. Assoc. Off. Anal. Chem. International 86 (2003) 484-489.
[154]  Spectrofluorometric Determination of Manzamine A in Spiked Human Urine and Plasma.A. Khalil; K. El-Sayed; F. Belal, N.Y. Khalil and M. Hamman.Pharmazie 58 (2003) 385-388.
[155]  Polarographic Determination of flubendazole in Spiked Human Urine and Plasma.N. El-Enany; F. Belal, and M. Rizk.IL Farmaco 58 (2003) 613 717.
[156]  Profiles of Ipratropium Bromide, a Monograph in "Profiles of Drug Substances, Excipients and Related Methdology", H.G. Brittain Editor, Vol. 30, Academic Press, New York (2003) 59-122. H. Abdine; F. Belal and A. Al-Badr.
[157]  Spectrophotometric Determination of Propranolol in Formulations via Oxidative Coupling with 3 Methylbenzothiazoline-2-one hydrazone.A. Al-Emam; F. Belal; M.A. Mostafa, S. Al-Asheq, D. Al-Sharbeineg and S.H. Hansen.IL Farmaco 58 (2003) 1179 1186.160.Spectrophotometric Determination of Fenoterol Hydrochloride in Pure Form and Dosage Forms. Y. El-Shabrawy, F. Belal, M. Sharaf El-Din and Sh. Shaalan.IL Farmaco 58 (2003) 1033 1038.
[158]  Spectrofluorometric Determination of Nimodipine in Dosage Forms and Spiked Human Urine. F. Belal; A. Al-Majed and S. Julkhuf.Pharmazie 58 (2003) 874-876.
[159]  Stability-Studies of Dioloxanide Furoate Involving Effect of pH-Temperature, Gastric and Intestinal Fluids.E.A. Gadkariem; F. Belal; M.A. Abounassif, H.A. El-Obeid and K.E.E. Ibrahim.IL Farmaco 59 (2004) 323-329.
[160]  Anodic Polarographic Determination of Lansoprazole and Omeprazole in Pure Form and in Pharmaceutical Dosage Forms.F. Belal; N. El-Enany and M. Risk.J. Food Drug Analysis 12 (2004) 102-109.
[161]  Kinetic Spectrophotometric Determination of Josamycin in Formulations and Spiked Human Plasma Using 3-Methylbenzothiazolin-2-one hydrazone/Fe+3 System.A.A. Al-Majed; F. Belal; K.E.E. Ibrahim and N.Y. Khalil.J. Assoc. Off. Anal. Chem. International 87 (2004) 352-359.
[162]  Polarographic Determination of Benazepril in dosage Forms and Spiked Human Urine.Y. Al-Shabrawy, M. Rizk, F. Belal, F. Ibrahim and A.O. Mesbah.Alex. J. Pharm. Sci. 18 (2004) 21-25.
[163]  Anodic Polarographic Determination of Isradipine in Pharmaceutical Formulations.F. Belal; A.A. Al-Majed; and S. Julkhuf.Sci. Pharm. 272 (2004) 131-142.
[164]  High-Performance Liquid Chromatographic Method for the Simultaneous Determination of Labetalol and Hydrochlorothiazide in Tablets and Spiked Human Plasma.M. Sultan, H. Abdine; N. Zoman and F. Belal.Sci. Pharm. 72 (2004) 143-155.
[165]  Anodic Polarographic Determination of Josamycin in Formulations and Spiked Human Urine.F. Belal; A. Al-Majed, K.E. Ibrahim and N.Y. Khalil.IL Farmaco 59 (2004) 537-542.
[166]  Spectrophotometric Determination of Salbutamol in Bulk and Dosage Forms After Derivatization with 4 Chloro-7-nitrobenzo-2-oxa-1, 3-diazole (NBD Cl).N. El-Enany; F. Belal; M.S. Rizk.Chem. Anal. 49 (2004) 261-269.
[167]  A Simple Kinetic Spectrophotometric Method for the Determination of Salbutamol in Dosage Forms.N. El-Enany; F. Belal and M. Rizk.Chem. Anal. 49 (2004) 587-599.
[168]  Benzapril Hydrochloride; Comprehensive Profile, a Monograph in "Profiles of Drug Substances, Excipients and Related Methodologies. H.G. Brittain, editor, Vol. 31, Elsevier, Inc. (2004) 171-161.F. Belal; H. Abdine and A. Al-Badr.
[169]  Dipyridamole, A Comprehensive Profile, in "Profiles of Drug Substances and Related Methodology.H.G. Brittain, Editor, Vol. 31, Elsevier, Inc. (2004) 215-279.A. Khalil; F. Belal and A. Al-Badr.
[170]  Chemical and Photochemical Stability Studies on Diloxanide Furoate in Carbohydrates and Polyols Solutions.R. Gadkariem, H.A. El-Obeid, F. Belal, M.A. Abounassif and K.E.E. Ibrahim.J. Food Drug Anal. 12 (2004) 49-55.
[171]  Fluorometric Measurement of Hydrogen Peroxide Produced During Aldehyde Oxidase Catalysed Oxidation Using Scopoletin.M.A. Al-Omar; C. Beedham; F. Belal; J.A. Smith and A.A. Al-Emam.J. Med. Sci. 5 (2005) 10-20.
[172]  Voltammetric Study of Danazol and its Determination in Capsules and Spiked Biological Fluids.M. Al-Omar, A. Al-Majed, M. Sultan, E.A. Gadkariem and F. Belal.J. Pharm. Biomed. Anal. 37 (2005) 199-204.
[173]  Analysis of Flunarizine in Presence of its Degradation Products Using Micellar Liquid Chromatography (MLC) or Microenalsion Liquid Chromatography (MELC) and Application to Dosage Forms.D.T. El-Sharbiny; M.I. Eid; D. El-Wasseef; R.M. Al-Ashban and F. Belal.J. Separation Sci.28 (2005) 197-202.
[174]  Spectrofluorometric Determination of Some-Blockers in Tablets and Human Plasma Using 9, 10-Dimethoxyanthracene-2-sodium Sulphonate.H. Abdine; M.A. Sultan; M. Hefnawy and F. Belal.Pharmazie 60 (2005) 265-268.
[175]  Voltammetric Determination of Montelukast Sodium in Dosage Forms and Human Plasma.I. Alsarra; M. Al-Omar; R. Radkariem; F. Belal.Il Farmaco 60 (2005) 563-567.
[176]  Spectrofluorometric Determination of Montelukast in dosage Forms and Spiked Human Plasma.I. Alsarra; N.Y. Khalil; M. Sultan; R. Al Ashban and F. Belal.Pharmazie 60 (2005) 823-826.
[177]  Kinetic Spectrophotometric Determination of Ranitidine HCl in Dosage Forms.D.R. El-Waseef; M. Eid and F. Belal.J. Chin. Chem. Soc. 52 (2005) 507-514.
[178]  Stability-indicating HPLC Method for the Determination of Methicillin in Vials and Biological Fluids Adopting Fluorometric Detection.A. Al-Majed; F. Belal; K.E.E. Ibrahim and N.Y. Khalid.J. Liq. Chromatogr. Relat. Technol. 28 (2005)1737-1750.
[179]  Profiles of Penicillamine, Monographs in "Profiles of Drug Substances, Excipients and Related Methodologies, " H.G. Brittain, Editor, Vol. 32, Elsevier, Inc. (2005) 119-152. A. Al-Majed; F. Belal; S. Julkhof and H. El-Subbagh.
[180]  Profiles of Valproic Acid and Sodium Valproate. Monographs in Profiles of Drug Substances, Excipients and Related Methodologies, " H.G. Brittain, Editor, Vol. 32, Elsevier, Inc. (2005) 209-240.I.A. Alsarra; M. Al-Omar and F. Belal.
[181]  Stability-indicating HPLC Method for Captopril through Pre-column Derivatization with Pd(II).S.M. Ahmad; M. Risk; F. Belal; F. Ibrahim and Z. Sheribah.J. Liq. Chromatogr. Relat. Technol. 29 (2006) 521-532.
[182]  Square-Wave Adsorptive Stripping Voltammetric Determination of Danazol in Capsules.A. Al-Ghamdy; M. Al-Omar and F. Belal.J. Pharm. Biomed. Anal. 41(2006) 989-993.
[183]  Kinetic Spectrophotometric Determination of Isoxsuprine in Dosage Forms Through Derivatization with 4-chloro-7-nitrobenzo-2-oxa-1, 3-diazole (NBD-Cl).N. El-Enany, F. Belal and M. Rizk.Sci. Pharm. 74 (2006) 99-119.
[184]  Spectrofluorometric Determination of Verapamil Hydrochloride in Pharmaceutical Preparations and Human Plasma using Organized Media. Application to Stability Studies.M. I. Walash; F. Belal; N. El-Enany and A. A. Abdelal.J. AOAC. INT.89 (2006) 1565-1572.
[185]  Utilization of Chloranilic Acid for the Spectrophotometric Analysis of Certain Tetracyclines Through Charge-Transfer complexation. K.M.S. Fabelboum; Y. El-Shabrawy, F. Belal and N.El-Enany.Mans. J. Pharm. Sci. 22 (2006) 195-208.
[186]  Fluorometric Determination of Nilvadipine in Pharmaceuticals and Biological Fluids via Reduction Using Zn/HCl.A. El-Emam; F. Belal; M.A. Moustafa; S. El-Ashrey and D.T. El-Sherbiny.Current Topics in Anal. Chem. 6 (2006) 11-18.
[187]  Simultaneous determination of loratadine and desloratadine in pharmaceutical preparations using liquid chromatography with a microemulsion as eluent.D. T. El-Sherbiny; N. El-Enany; F. Belal and S. H. Hansen J. Pharm. Biomed. Anal.43 (2007) 1236-1242.
[188]  Microemulsion Liquid Chromatographic Determination Of Nicardipine Hydrochloride In Pharmaceutical preparations and Biological Fluids. Application to Stability Studies. M. I. Walash, F. Belal, N. El-Enany, A. A. Abdelal J. Liq. Chromatogr. Relat. Technol. 30(2007) 1015-1034.
[189]  Spectrofluorimetric Determination of Itraconazole in Dosage Forms and Spiked Human Plasma.N. El-Enany; D. El-Sherbiny and F. Belal J. Chin. Chem. Soc. 54 (2007) 375-382.
[190]  Kinetic Spectrophotometric Determination of Ethamsylate in DosageForms N. El-Enany; F. Belal and M. Rizk .J. AOAC. INT. 90 (2007) 679-685.
[191]  Spectrophotometric Determination of Thioctic acid in its Dosage Forms through Complex formation with Pd (II). N. El-Enany; F. Belal and M. Rizk. J. Chin. Chem. Soc. 54 (2007).
[192]  Spectrophotometric, Spectrofluorimetric and HPLC Determination of Desloratadine in Dosage Forms and Human Plasma.N. El-Enany ; D. El-Sherbiny and F. Belal Chem. Pharm. Bull. 55 (2007) 1662-1670.
[193]  Spectrofluorimetric Determination of oxamniquine in Dosage Forms and Spiked Human Plasma through Derivatization with 1-Dimethylaminonaphthalene-5-Sulphonyl chloride.N. El-Enany ; F. Belal and M. Rizk J. Fluorescence. 18 (2008) 349-355.
[194]  Second Derivative Synchronous Spectrofluorimetry for Simultaneous Determination of Cinnarizine and Domperidone in Pharmaceutical Preparations and Biological Fluids.M.I. Walash; F. Belal; N. El-Enany and A. A. Abdelal J. Fluorescence. 18 (2008) 61-74.
[195]  Novel Spectrophotometric method for the assay of Captopril in dosage forms using 2, 6-dichloroquinone-4-chlorimide.Nahed El-Enany, Fathalla Belal and Mohamed Rizk Int. J. Biomed. Sci. 4 (2008) 100-107 .
[196]  A Simple Kinetic Spectrophotometric Method For The Determination of Metronidazole in Dosage Forms.Nagwa H. S. Ahmida, Negia B. B. Elbarasi, N. El-Enany and F. Belal M.J.P.S. 24 (2008) 1-13.
[197]  Stability indicating HPLC for the determination of quetiapine. Application to tablets and human plasma.F. Belal; A. El-brashy; M. Eid and J. J. Naser.J. Liq. Chromatogr. Relat. Technol. 31(2008)1283-1298.
[198]  Method Development and Validation for the Simultaneous Determination of Cinnarizine and Co-formulated drugs in Pharmaceutical Preparations by Capillary Electrophoresis.A.A. Abdelal; S. Kitagawa; H. ohtani; N. El-Enany; F. Belal and M. I. Walash.J. Pharm. Biomed. Anal.46 (2008) 491-497.
[199]  Voltammetric Determination of Rosiglitazone in Pharmaceutical Preparations and Human Plasma.D. T. El-Sherbiny; N. El-Enany and F. Belal.Anal. Lett. 41 (2008) 806-821.
[200]  The Alternating Current Polarographic Behavior and Determination of Lansoprazole and Omeprazole in Dosage Forms and Biological Fluids. N. El-Enany; F. Belal and M. Rizk.J. Biochem.Biophys.70 (2008) 889-896.
[201]  Second Derivative Synchronous Fluorescence Spectroscopy for the Simultaneous Determination of Cinnarizine and Nicergoline in Pharmaceutical Preparations.Application to Biological Fluids.M. I. Walash; F. Belal; N. El-Enany and A. A. Abdelal.J. AOAC. INT. 91(2008) 349-359.
[202]  Spectrofluorimetric Determination of Olanzapine and Fluphenazine Hydrochloride in Pharmaceutical Preparations and Human Plasma using Eosin. Application to Stability Studies. N. El-Enany; F. Belal; A. El-Brashy and N. El-Bahay J. AOAC. INT. 91(2008).
[203]  Spectrofluorimetric Determination of Drotaverine Hydrochloride in Pharmaceutical Preparations D. El-Wasseef; D. El-Sharbiny; M. Eid and F. Belal.Anal. Lett. 41 (2008) 2354-2362.
[204]  Alternating current Polarographic Determination of Nilvadipine in Dosage Forms and Spiked Human Plasma M. A. El-Omar; D.T. El-Sherbiny; S. El-Ashrey M.A. Moustafa; F. Belal and A. El-Emam; Current Topics in Anal. Chem. 13 (2008) 37-45.
[205]  Voltammetric Analysis of Quetiapine in Pharmaceuticals F. Belal; A. El-Brashy; N. El-Enany and N. El-Bahay Port. Electrochim. Acta. 27 (2009) 113-125.
[206]  Stability-Indicating LC Method for the Determination of Lacidipine in Tablets. Application to Degradation Kinetics and Content Uniformity Testing F. Belal, A. Elbrashy, M. Eid and Jenny Jeehan Nasr Chromatographia (2009) 1-9.
[207]  Second derivative synchronous fluorescence spectroscopy for the simultaneous determination of chlorzoxazone and ibuprofen in pharmaceutical preparations and Biological fluids. N. El-Enany; F. Belal; Y. El-Shabrawy and M. Rizk.Int. J. Biomed. Sci. 5 (2009) 136-145.
[208]  Spectrofluorimetric and Spectrophotometric Determination of oxamniquine in Pharmaceuticals and biological fluids via Derivatization with 4-chloro-7-nitrobenzo-2-oxa-1, 3-diazole (NBD-Cl).N. El-Enany ; F. Belal and Nagwa Hamza J. Chin. Chem. Soc. 56 (2009) 485-492.
[209]  Development of membrane electrodes for the specific determination of Moexipril in Dosage Forms and Biological Fluids.S. M. Amer; F. Belal; F. H. Metwaly and K. M. Younes Port. Electrochim. Acta. 27 (2009) 463-475.
[210]  Kinetic Spectrophotometric Determination of Trazodone HCl in Dosage Forms and Biological fluids.N. El-Enany; F. Belal; A. El-Brashy and N. El-Bahay Mans. J. Pharm. Sci. 25 (2009) 123-132.
[211]  Kinetic Spectrofluorometric Determination of Certain Calcium Channel Blockers via their Oxidation with Cerric (IV).M.I. Walash, F. Belal, N. El-Enany and A. A. Abdelal Int. J. Biomed. Sci. 5 (2009) 146-157.
[212]  Simultaneous determination of sulpiride and its alkaline degradation by Second derivative synchronous fluorescence spectroscopy.A. Abdelal; N. El-Enany and F. Belal.Talanta. 80 (2009) 880-888.
[213]  Stability-Indicating Micellar Liquid Chromatographic Method for the Determination of Clopidogrel. Application to Tablets and Content Uniformity Testing.F. Belal; A. Elbrashy; M. Eid; Jenny Jeehan Nasr J. Liq. Chromatogr. Relat. Technol. 32 (2009) 2993-3008.
[214]  Spectrofluorometric Determination of Flupentixol and Quetiapen in Pharmaceutical Preparations and human plasma via their Oxidation with Cerric (IV).N. El-Enany; F. Belal; A. El-Brashy and N. El-Bahay Anal. Chem. An Indian Journal 8 (2009).
[215]  Spectrophotometric Determination of Captopril and Ethamsylate in Pharmaceutical Preparations.N. El-Enany; F. Belal and M. Rizk.Anal. Chem. An Indian Journal 8 (2009).
[216]  Voltammetric Determination of Cyproterone acetate in Pharmaceutical Preparations.N. El-Enany; D. El-Sherbiny and Fathalla Belal Int. J. Biomed. Sci. 6 (2010) 128-134.
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