List of Publications of Professor M. S. El-Shahawi A. Papers Submitted or Revised for Publication in International Journals: 1. H. M. Harbi, A. Eldougdoug , and M.S. El-Shahawi "Mineral Processing and Extraction of Rare Earth Elements from the Wadi Khamal Nelsonite Ore, northwestern Saudi Arabi" Submitted to J.Arab. Chem. Soc., 2008 2. M.W. Qadi and M.S. El-Shahawi "Differential Pulse Cathodic Stripping Voltammetric Determination of Uranium with Arsenazo –III at the Hanging Mercury Dropping Electrode" Submitted to J. Radioanal.Nucl. Chem., 2009. 3. M.S.El-Shahawi, A.M.Othman, M. E. El-Houseini , B. Nashed and M. S. Elsofy "Spectrofluorimetric method for the determination of the activity of the enzyme α -Lfucosidase using the complex ion associate of 2-chloro-4-nitro phenol - rhodamine-B" Submitted to Anal. Chim. Acta, 2008. 4. A. Hamza, A. S. Bashammakh, A. A. Al-Sibaai, H.M. Al-Saadi and M.S. ElShahawi Part 1. Spectrophotometric determination of trace mercury (II) in water and fertilizer using the novel reagent 3_ (2 _ oxoindolin _ 3 _ ylidenamino) _ 2 _ thioxo _ 5-dihydro1, 3-thiazine-4, 6-dione and the dual - wavelength β _ correction" Submitted to Anal. Chim. Acta, 2008. 5. M.S. El-Shahawi* and A.S. Bashammakh "Analytical performance and extraction equilibrium of the complex ion associate of tetrachloro gold (III) with the ion pairing reagent amiloride mono hydrochloride" Submitted to Can.J. Chem, 2008. 6. M. S. El-Shahawi, G. A. A. Al-Hazmi, and A. A. El-Asmy "Influence of the Ligand Substituent on theVoltammetric Behaviour of Some Cobalt (II), Nickel (II) and copper (II) Thiosemicarbazone Complexes". Electrochimica Acta, 2008. 7. M.S.El-Shahawi, S.O. Bahaffi and M.A.El-Sonbati "Chromatographic Behavior and Subsequent Chemical Speciation of Chromium (III) & (VI)) in Wastewater using Onium Cations Immobilized Polyurethane Foams" To be submitted to J. Chromatography, 2008. 8. M.S. El-Shahawi, M.K.Abdel Azeem, H. M. Nassef and A.T. Tawfiq "An Investigation onto the Retention Profile, Thermodynamic and Chromatographic Separation of some Water Soluble Textile Dyes Employing Polyurethane Foams" To be submitted to J. Water Research, 2008. 9. M.S. El-Shahawi, A.S. Bashammakh and H. M. Nassef "Spectroelectrochemical Behavior of Some Schiff Bases Metal Complexes Containing Benzoin Moiety and Their Complexes". To be revised and submitted to Electrochimica Acta , 2008. 10. A. S. Bashammakh, A. A. Al-Sibaai, A.G. Hamza, H. K. Al-Ariqe and M.S. ElShahawi "Retention Profile of Titanium (IV) Sorption from Water onto Polyurethane Foam Sorbent and Subsequent ICP-AES Determination Employing Syringe foam Packed Pulse Column" To be submitted to Anal. Chim. Acta, 2008. 11. A. S. Bashammakh*, M. S. El-Shahawi, S.O. Bahaffi and Hakeem K. Al-Ariqe "ICP-OES Determination of Titanium (IV) in Marine and Wastewater Samples after Preconcentration onto Unloaded and Reagent Immobilized Polyurethane Foams Packed Columns" To be submitted to Anal. Chim. Acta, 2008. 12. M.S. El-Shahawi†, A. S. Bashammakh, A.I. Al-Sibaai and H. K. Al-Ariqe "Thoron I, a Novel Complexing Agent for Lead Determination in Natural- and Wastewater and Food Stuffs Samples by Adsorptive Cathodic Stripping Voltammetry at Hanging Mercury Drop Electrode" Submitted to Anal. Bioanal. Chem., 2008 13. M.S.El-Shahawi, M.A. Al-Sonbati and F.A.H. El-Gendy "Retention Profiles and Chromatographic Separation Kinetic of Selenium (IV) from Aqueous Media Containing Bromide Employing Polyurethane Foams and Carbon Soot as Solid Sorbent To be submitted to J. Water Research, 2008. 15. M.S. El-Shahawi, E.A. Bahaidarah, A.G. Hamza, and A. S. Bashammakh "Determination of Spironolactone Drug in Pharmaceutical Formulations and Wastewater by Adsorptive Cathodic Stripping Voltammetry" To be submitted to Talanta, 2008. 1. M. S. El-Shahawi S. M. Aldhaheri "Soil Pollution Hazardous to Human Life : A Case Study on the Determination of Some Heavy Metal Ions in Soil Around Al-Ain Cement Factory , United Arab Emirates". To be submitted to Chemosphere (2008). 2. M.M. Abu-Mesalam, M.S. El-Shahawi, M.S. Abdel-Hai and I.M.El-Nagar "Kinetic Behavior and Retention Profile of Some Fission products (U and Na) from Radioactive Liquid Waste Solution onto Titanomolybdate ion Exchanger Ion Exchanger". To be submitted to Anal..Chim. Acta, 2008. 3. M. S. El-Shahawi and O.M. Al-Batrawy "Spectrophotometric Determination of Cadmium in Water by liquid Solid- Separation Employing 3, 3- Difluorodithiazone Impregnated Polyurethane Foams" Submitted to Chromatographia, 2008 4. M. S. El-Shahawi and E. P. Achterberg "Chemical Speciation of Bismuth (III & V) in Sea Water by Adsorptive Cathodic Stripping Voltammetry Using Pyridyl-azo resorcinol (PAR)" To be submitted to Maine Pollution Bulletin, 2008. 5. A.B. Farag and M. S. El-Shahawi "Unloaded and Specially Treated Polyurethane Foams as Solid Extractor in Separation Sciences and their medical Applications" To be submitted as a Chapter in M.Y. Abdelaal ""Poly Functionalized Polymer and their Medical Applications" , Sign Post Publishers, 2008 6.. A.Z. El-Sonbati1*, M.S. El-Shahawi2 and M. Moqbal1 " Novel supramolecular binuclear polymeric dioxo uranyl complexes containing Hydrazone's sulfa drugs" Submitted to Spectrochimica Acta, 2008. B. Papers Accepted or published in International Journals: 1. A. M. Dowidar M. S. El-Shahawi I. A. Ashour "Adsorption of Polycyclic Aromatic Hydrocarbons onto Activated Carbon from Non-Aqueous Media: 1. The Influence of the Organic Solvent Polarity" Separation Science and Technology, 42 (2007) 1–14 2. A. S. Bashammakh, F. M. Al-Shareef and M. S. El-Shahawi "A Basic Study for the Development of Analytical Method for Trace Gold in Aqueous Solution using Polyurethane Form Sorbents: Kinetic and Thermodynamic Characteristic of Gold (III) Sorption" Analytical Sciences (Japan), 2008, in press. 3. E.M. Saad, R. A. Mansour, A. El-Asmy and M.S. El-Shahaw "Sorption Profile and Chromatographic Separation of Uranium (VI) Ions from Aqueous Solutions onto Date Pits Solid Sorbent Talanta, 2008, in press.. 4. M.S.El-Shahawi, S.S.M. Hassan, A.M.Othman and M.A.El-Sonbati "Retention Profile and Subsequent Chemical Speciation of Chromium (III) & (VI)) in Industrial Wastewater Samples Employing some Onium Cations Loaded Polyurethane Foams" Microchemical J 89 (2008) 13. 5. A.B. Farag, M.H. Soliman, O.S. Abdel-Rasoul and M.S. El-Shahawi "Sorption characteristics and chromatographic separation of gold (I& III) from silver and base metal ions using polyurethane foams" Anal. Chim. Acta , 601 (2007) 218. 6. I. M. Saad, M. S. El-Shahwai, H. Saleh and A.A. El-Asmy "Studies on Bismuth (III) Complexes of Ligands Containing Nitrogen/Sulfur and Extractive Procedure for Determination of Bismuth (III)" Transition Met. Chem., 32(2) (2007) 156. 7. M.S.El-Shahawi, S.O. Bahaffi and T.El-Mogy Differential Pulse Voltammetric Determination of Domperidone in Drug Formulation at Glassy Carbon Electrode. Anal. Bioanal. Chem., 387 (2007) 719. 8. A. S. Bashammakh, A. A. Al-Sibaai, H. O. Al-Wael and M. S. El-Shahawi "Extractive Liquid-Liquid Spectrophotometric Procedure for the Determination of Thiocyanate Ions Employing the Ion Pair Reagent Amiloride Monohydrochloride" Anal. Chim. Acta, 592 (2007)16. 9. M. S. El-Shahawi*, A. S. Bashammakh and S.O. Bahaffi "Chemical Speciation and Recovery of Gold (I & III) from Wastewater and Silver by Liquid-Liquid Extraction with the Ion Pair Reagent Amiloride Mono Hydrochloride and AAS Determination" Talanta, 72 (2007) 1494. 10. M.S.El-Shahawi, A.S. Bashammakh and T.El-Mogy Determination of the Trace Levels of Disomin in Pharmaceutical Preparation by Adsorptive Stripping Voltammetry at Glassy Carbon Electrode Analytical Sciences (Japan), 22 (2006) 1351. 11. M. S. El-Shahawi and M.A.El-Sonbati "Chemical Equilibria and Sequential Extractive Spectrophotometric Determination of Selenium (IV) & (VI) using the Chromogenic Reagent 4, 4—Dichlorodithizone" International J. Environ. Anal. Chem.86 (12) (2006) 941. 12. S.E. Ghazy, R.M. El-Shazly, M.S. El-Shahawi, G.A.A.Al-Hazmi and A.A.ElAsmy "Spectrophotometric Determination of Copper (II) in Natural waters, Vitamins and Certified and Vitamin Samples Using Acetophenone-pChlorophenylthiosemicarbazone". J. Iranian. Chem. Soc 1 (2) (2006)140. 13. A.M.Othman, M. S. EL-Shahawi, M. Abdel -Azeem and N.M. Rizk "A Novel Barium (II) polymeric Membrane Sensor for Selective Determination of Barium and Sulphate Ions Based on The Complex Ion associate of Barium (II) - Rose Bengal Neutral Ionophore" Anal. Chim. Acta 555(2006) 322. 14. R.M. El-Shazly, G.A.A.Al-Hazmi, S.E. Ghazy, M.S. El-Shahawi and A.A.ElAsmy "Synthesis and Spectroscopic Characterization of Cobalt (II) Complexes with Some Thiosemicarbazone Derivatives". J. Coord. Chem. 59 (2006) 845 15. A. Radi, M.S. El-Shahawi and T. El-Mogy "Differntial Pulse Voltammetric Determination of the Dopaminergic Agonist Bromocriptine at Glassy Carbon Electrode". J.Pharm.Biomed.Analysis. 37 (2005) 195. 16. G. A. A. Al-Hazmi, M.S. El-Shahawi and A. A. El-Asmy "Ligand Influence on the Electrochemical Behavior of Some Copper (II) Thiosemicarbazone Complexes". Trans. Metal Chem.30 (2005) 464. 17. M. S. El-Shahawi and M.A.El-Sonbati "Retention Profile, Kinetics and Sequential Determination of Selenium (IV) and (VI) Employing 4,4—Dichlorodithizone Immobilized Polyurethane Foams" Talanta 67 (2005) 800. 18. M.S.El-Shahawi, A.M.Othman, and M.A.Abdel-Fadeel "Kinetics, Thermodynamic and Chromotographic Behavior of the Uranyl ions Sorption from Aqueous Thiocyanate Media onto polyurethane foams". Anal. Chim. Acta, 546(7) (2005) 221 19. M.S. El-Shahawi, A.M.Othman, H.A. Nassef and M. A.Abdel-Fadeel An Investigation into The Retention Profile and Kinetics of Sorption of the Ternary complex Ion Associate of the uranyl ions with Crown Ether and Picric Acid by the Polyurethane Foams. Anal. Chim. Acta, 536 (1-2) (2005) 227 20. G.A.A.Al-Hazmi, M.S. El-Shahawi I. M. Gabr and A.A.El-Asmy "Spectral, Thermal, Magnetic and Electrochemical Studies on New Copper (II) Complexes of Thiosemicarbazone Derivatives". J. Coord. Chem.58 (2005) 713. 21. M.S. El-Shahawi, S.S.M.Hassan, A.M. Othman, M.A. Zyada and M.A. El-Sonbati "Chemical speciation of chromium (III&VI) employing extractive spectrophotometry and tetraphenylarsonium chloride or tetraphenylphosphonium bromidesss as ion-pair reagent". Anal. Chim. Acta, 534 (2005) 319. 22. S.S.M. Hassan, M.S. El-Shahawi, A.M. Othman and M.A Mosaad A potentiometric rhodamine-B based membrane sensor for the selective determination of chromium ions in wastewater. Analytical Sciences 21(6) (2005) 673. 23. R.M. El-Shazly, G.A.A.Al-Hazmi, S.E. Ghazy, M.S. El-Shahawi and A.A.ElAsmy "Spectroscopic, Thermal and Electrochemical Studies on some Nickel (II) Complexes Thiosemicarbazone Derivatives". Spectrochimica Acta part A, 61 (2004) 3187. 24. A. M. Othman, N. M. H. Rizk and M. S. El-Shahawi "Potentiometric Determination of Dopamine in Pharmaceutical Preparation Using Crown Ether –PVC Membrane Sensors" Anal. Sci. (Japan) 20 (2004) 651. 25. A. M. Othman, N. M. H. Rizk and M. S. El-Shahawi "Potentiometric Determination of Sildinafil Citrate (Viagra) in Pharmaceutical Preparation. Anal. Chim. Acta, 515 (2004) 303". 26. M. S. El-Shahawi and A. F. Shoair "Synthesis, Spectroscopic, Characterization, Redox Properties and Catalytic Reactivity of some Novel Ruthenium (II) Complexes Containing Aromatic Aldehyde and Triphenylphosphine or Triphenylarsine". Spectrochemica Acta Part A 60 (2004) 121. 27. M. S. El-Shahawi and H. A. Nassif "Retention and Thermodynamic Characteristics of Mercury (II) complexes onto Polyurethane Foams" Anal. Chim. Acta, 481 (2003) 29. 28. M. S. El-Shahawi and H. A. Nassif "Kinetics and Retention Characteristics of some Nitrophenols onto Polyurethane Foams" Anal. Chim. Acta, 487 (2003) 249. 29. M. S. El-Shahawi, G. El-Shaboury, M. A. M. Aly and M. El-Tawoosy Chemical and Thermodynamic Characteristics of the Isotopic Exchange Reaction between Radioiodine and Iodohippuric Acid Isomers Analytical Sciences (Japan), 19 (2003) 1331 30. M.M. Abu-Mesalam,I.M. El-Nagar, M.S. Abdel-Hai and M.S. El-Shahawi Use of Open-Cell Polyurethane Foam loaded with Crown Ether for the Preconcentration of Uranium from Aqueous Solutions Radiochem. Radioanal. Chem. 258 (2003) 619. 31. S.M. Saleh, S.A. Sayd and M. S. El-Shahawi Extraction and Recovery of Au, Sb and Sn from electro refined solid waste Anal. Chim. Acta, 436 (2001) 69. 32. S.I. Mostafa, M. S. El-Shahawi and A. El-Asmy Ruthenium (II) complexes of 2-Hydroxybenzophenone- N(4)- Substituated Thiosemicarbazones. Transition Metal Chemsitry, 25 (2000) 470. 33. M. H. Al-Yousuf, M. S. El-Shahawi and S. M. Al-Gais "Trace Metals in Liver, Skin and Muscle of Lethrinus lentijan Fish Species in Relation to Body Length and Sex. The Science of the Total Environment, 256 (2000) 87. 34. M. S. El-Shahawi and M. H. Al-Yousuf "Trace Metals in Lethrinus Lentijan Fish from the Arabian Gulf (Ras Al-Khaimah, United Arab Emirates): Metal Accumulation in Kidney and Heart Tissues". Bull. Environ. Contam. Toxicology, 62 (1999) 293. 35. A.S.R. Al-Meqbali, M. S. El-Shahawi and M.M. Kamal "Differential pulse Polarographic analysis of Chlorpyrifos pesticide". Electroanalysis, 10 (1999) 784. 36. E.S. Hassan, I.M. Banat, M.S. El-Shahawi and A.H. Abu Hillal. "Post Gulf-War Assessment of Nutrients, Heavy Metal Ions, Hydrocarbons and Bacterial Pollution in the United Arab Emirates Costal Waters". Environ. Intern. 24 (1998) 109. 37. M.S. El-Shahawi and A.Z. Abu Zuhri "Sequential Titrimetric and Spectrophotometric Determination of Trace Amounts of Tin(II) and Tin(IV) by Amplification Reactions". Bull. Chem. Soc. Japan, 71 (1998) 601. 38.M. S. El-Shahawi and M. H. Al-Yousuf "Heavy Metals (Ni, Co, Cr, Pb) Contamination in Liver and Skin Tissues of Lenthrinus Lentijan Fish (Family : Linthrinide Toelost) from the Arabian Gulf". Intern. J. Food Sci. Nutrition, 49 (1998) 447. 39. .M.S. El-Shahawi and M.M. Kamal "Determination of Chlorpyrifos Pesticide by Cathodic Adsorptive Stripping Voltammetry". Fresenius J. Anal. Chem., 362 (1998) 344. 40. M.S. El-Shahawi and R.S. Al-Mehrezi. "Detection and Semiquantitative Determination of Bismuth (III) in Water on Immobilized and Plasticized-Polyurethane Foams with Some Chrmogenic Reagents" Talanta 44 (1997) 483. 41. M.S. El-Shahawi. "Retention Profiles of Some Commercial Pesticides, Pyrethroid and Acaricide Residues and their Applications to Tomato and Parsley" J. Chromatography A 760 (1997) 179. 42. M.S. El-Shahawi, M.H. Abdel Kader and R.S. Al-Mehrezi "Retention and Separation Behaviour of Some Organophosphorous and Pyrethroid Besticides on Polyurethane Faoms" Anal. Sci. (Japan) 13 (1997) 633. 43. M.S. El-Shahawi "Extraction Equilibrium of the Ion-Associate of Periodate with Amiloride Hydrochloride and Simultaneous Spectrophotometric Determination of Periodate and Iodate Ions by Liquid-Liquid Extraction" Anal. Chim. Acta, 356 (1997) 85. 44. A.M. Kiwan, M.S. El-Shahawi, S.M. Aldhaheri and M.H. Saleh "Sensitive Detection and Semiquantitative Determination of Mercury (II) and Lead (II) in Aqueous Media Using Polyurethane Foam Immobilized 1, 5-di (2fluorophenyl)-3-mercaptoformazan" Talanta, 45 (1997) 203 45. M.S. El-Shahawi "Spectroscopic and Electrochemical Studies of Chromium (III) Complexes of Naturally Occurring Legends Containing Sulfur" Spectrochemica Acta, 52 A (1996) 139. 46. M.S. El-Shahawi and S.M. Aldhaheri. "Preconcentration and Separation of Acaricides by Polyether Based Polyurethane Foam". Anal. Chim. Acta, 320 (1996) 277. 47. D.T. Burns, M.S. El-Shahawi, M.J. Kerrigan and P.M.T. Smyth "Spectrophotometric Determination of Rhenium by Extraction with Amiloride Hydrochloride". Anal. Chim. Acta 322 (1996) 107. 48. M.S. El-Shahawi and F.A. Al-Hashimi. "Spectrophotometric Determination of Iodate and Periodate Ions by Liquid-Liquid Extraction as an Ion-Pair with Tetramethylammonium Iodide". Talanta, 43 (1996) 2037. 49. E.S. Hassan, I.M. Banat, M.S. El-Shahawi and A.H. Abu-Hilal. "Bacterial Nutrients and Heavy Metal Ions Pollution Assessment Along the Eastern Coastal Area of the United Arab Emirates". J. Aquatic Ecosystem Health 5 (1996) 73 50. M.S. El-Shahawi and S.M. Aldhaheri. "Spectrophotometric Determination of Bismuth (III) & (V) in Water After Ion-Pair Liquid-Liquid Extraction Using Tetramethylammonium Cation as Counter Ion". Fresenius Z. Anal. Chem., 354 (1996) 200. 51. M.S. El-Shahawi. "Chromium (III) Complexes of Some Naturally Occurring Lignads" Spectrochemica Acta, 51A (1995) 161. 52. M.S. El-Shahawi and S.A. Barakat. "Spectroscopic and Electrochemical Studies of Some a-hydroxy Acids with Different Chromium Ions". Spectrochemica Acta, 51A (1995) 171. 53. M.S. El-Shahawi and M. Almehdi. "Qualitative, Semi-Quantitative and Spectrophotometric Determination of Ruthenium (III) Using Solid Phase Extraction with 3-hydroxy-2-methyl-1,4-naphthoquinone-4oxime Loaded Polyurethane Foam Columns". J. Chromatography, 679 (1995)185. 54 M.S. El-Shahawi and A.B. Farag. "Iodometric Microgram Determination of Gold and Platinum by 168- and 126- Fold Chemical Amplification Reactions". Analytica Chimica Acta, 307 (1995) 161. 55. M.S. El-Shahawi and M.M. Kamal "Microgram Determination of Bismuth by Sequential High Fold Chemical Amplification Reactions". Analytical Sciences (Japan), 11 (1995) 323. 56. M.S. El-Shahawi, A.M. Kiwan, S.M. Aldhaheri and M.H. Saleh. "The Retention Behaviour and Separation of Some Water Soluble Organophosphorous Insecticides on Polyester-Based Polyurethane Foams". Talanta, 42 (1995) 1471. 57.M.S. El-Shahawi and S. A. Barakat. "Chemical Amplification Methods for the Sequential Determination of Trace Amounts of Ruthenium by Titrimetric and Spectrophotometric Procedures" Talanta, 42 (1995) 1641. 58. A.A. El-Asmy, E.M. El-Saad and M.S. El-Shahawi "Electrochemical Synthesis, Magnetic, Spectral and Cyclic Voltammetric Studies on Lactic Acid Complexes" Transition Metal Chemistry, 19 (1994) 406. 59. A.Z. Abu Zuhri, A.H. Rady, M.S. El-Shahawi and S.M. Aldhaheri. Spectrophotometric Determination of Ampicillin by Ternary Complex Formation with 1,10-phenonthroline and Copper (II). Microchem. J. 40 (1994) 111. 60. A.B. Farag, M.S. El-Shahawi and S. Farag. "The Sorption Behavior and Separation of Some Metal Thiocyanate Complexes on Polyether Based Polyurethane Foams". Talanta, 41 (1994) 617. 61. M.S. El-Shahawi, and W.E. Smith "Spectroelectrochemistry of Nickel (II) Complexes of N, N'-bis(salicylaldehyde)-ophenylenediamine and N,N'-bis(2-hydroxy-1-naphthaldehyde)-o-phenylenediamine Using an Optically Transparent Thin Layer Electrode" Analyst (London), 119 (1994) 327. 62.M.S. El-Shahawi, A.Z. Abu Zuhri and M.M. Kamal "Adsorptive Stripping Voltammetric Measurements of Trace Amounts of Platinum(II) and Ruthenium(III) in the Presence of 1-(2-pyridylazo)-2-naphthol" Fresnius Z. Anal. Chem., 348 (1994) 730. 63.M.S. El-Shahawi, A.B. Farag, M.R. Mostafa "Pre-concentration and Separation of Phenols from Water by Polyurethane Foams" Sep. Sci. Technol, 29 (1994) 289. 64.M.S. El-Shahawi. "Retention and Separation Behavior of Some Organic Water Pollutants by Polyurethane Foam" Talanta, 41, (1994) 1481. 65.M.S. El-Shahawi, A.Z. Abu Zuhri and S.M. Aldhaheri. "Spectrophotometric Determination of Ruthenium after Extraction of Perruthenate with Benzyltributylammonium Chloride". Fresenius J. Anal. Chem., 350, (1994) 674. 66. A.Z. Abu Zuhri, M.S. El-Shahawi, and M.M. Kamal. "Spectrophotometric and Polarographic Behaviour of Di-2-pyridyl ketone 2-thienoylhydrazone". Analytical Letters, 27 (1994) 907. 67. H. Doweidar, A.A. Megahed, S.A. Almaksoud, M.S. El-Shahawi and Y. Elfol "Properties and Structure of ZnO-PbO-B2O3". Physics and Chemistry of Glasses, 35 (1994) 187. 68. A.B. Farag, M.S. El-Shahawi and E.M. El-Nemma. "Iodometric Microgram Determination of Arsenic and Antimony in Organic Compounds by Use of Amplification Reactions" Fresnius Z. Anal. Chem., 346 (1993) 455. 69. M.S. El-Shahawi. "Chromium (III) Complexes of Naturally Occurring Amino Acids" Transition Metal Chemistry, 18 (1993) 385. 70.M.S. EL-Shahawi and A.A. El-Bindary "Chromium (III) Complexes with Some Optically Active a-Hydroxy Acids". Z. Naturforch., 48B (1993) 282. 71. A.Z. Abu Zuhri, M.S. El-Shahawi and M.M. Kamal "Adsorptive Stripping Voltammetric Behaviour of Gold (III) at a Hanging Mercury Drop Electrode in the Presence of 1-(2`-pyridylazo)-2-Naphthol" Anal.Chim. Acta.,282 (1993) 133. 72. .M.S. El-Shahawi. "Pre- concentration and Separation of Some Organic Water Pollutants with Polyurethane Foam and Activated Carbon" Chromatographia., 36 (1993)318. 73.A.M. Abdallah, M.S. El-Shahawi, M.M. El-Defrawy and E. Askar "Removal of Heteropolyanions Interferences in the Atomic Absorption Determination of Silver and Gold" Chemia Analityczna, 37 (1992) 589. 74. D.T. Burns, S.A. Barakat, M.S. El-Shahawi, and M. Harriott "Flow-injection Extraction Spectrophotometric Determination of Permanganate with Triphenylsulphonim Cations" Fresnius Z. Anal. Chem. , 344 (1992) 131. 75. D.T. Burns, M. Harriott, S.A. Barakat and M.S. El-Shahawi. "Flow-injection Extraction Spectrophotometric Determination of Manganese in Steel as Triphenylsulfonium or Benzyltributyl-ammonium Permanganate" Analytical Proceedings, 29 (1992) 369. 76. D.T. Burns, S.A. Barakat, M. Harriott and M.S. El-Shahawi "Flow Injection Extraction Spectrophotometric Determination of Manganese (VII) with Benzyl tributylammonium-chloride. Anal. Chim. Acta., 270 (1992) 213. 77. M.S. El-Shahawi and S.E. Ghazy. "Chromium (III) Complexes of D (-) Tartaric and L (-) Mandelic Acids" Transition Metal Chemistry, 17 (1992) 543. 78. A.B. Farag, M.S. El-Shahawi, A.M.A. Helmy and S. Farrag. "The Extraction and Recovery of Some Organic Insecticides from Aqueous Media with Cellular Polyurethanes" Bull. Chem. Soc. Chem. Fr. 128 (1991) 641. 79. M.S. El-Shahawi "Spectrophotometric Determination of Nickel with Some Schiff Base Legends" Anal. Sci. (Japan), 7 (1991) 443. 80. A.B. Farag and M.S. El-Shahawi "Removal of Organic Pollutants from Aqueous Solution V. A Comparative Study of the Extraction, Recovery and Chromatographic Separation of Some Organic Insecticides Using Unloaded Polyurethane Foam Column" J. Chromatography, 552 (1991) 371. 81. A.M. El-Wakil, M.S. El-Shahawi and A.B. Farag. "Trace Analysis by the Direct Spectrophotometric Measurement on Polyurethane Foam, Determination of Chromium (VI) as a Blue Perchromic Acid with Unloaded and Tri-n-Butyl Phosphate Loaded Foam". Anal. Letter, 23 (1990) 703. 82. H. Doweidar, M.S. El-Shahawi, F.M. Reicha, H.A. Silim and K. El-Egaly "Phase Separation and Physical Properties of Sodium Borosilicate Glasses with Intermediate Silica Content". J. Phys. D Applied Phys. 23 (1990) 1441 83. M. Mashaly, M.S. El-Shahawi and P. P. Sandra "Domestic Indoor Pollution: GGC and GC/MS Investigation of the Exhaust Particulate Matter Deposited on the Inside Wall of Kerosene Lamp". Bull. Fac. Sci. Mans. Univ. 17 (1990) 45. 84. A.M. El-Wakil, A.B. Farag and M.S. El-Shahawi "Iodometric Microdetermination of Thallium in Aqueous Media and in Organic Compounds Via Chemical Amplification Reactions". Fresenius Z. Anal. Chem. 337 (1990) 886. 85. A.M. El-Hendawy and M.S. El-Shahawi "Complexes of Ruthenium (III) Derived from o,o-Donor Legends". Polyhedron, 8 (1989) 2813. 86. A.B. Farag, A.M. El-Wakil and M.S. El-Shahawi, M.A. Mashaly "Extraction and Recovery of Some Organic Insecticides on Polyurethane Foam Columns" Anal. Sci. (Japan), 5 (1989) 145. 87.A.B. Farag, A.M.A. Helmy, M.S. El-Shahawi and S. Farrag "Sensitive Detection and Semi quantitative Determination of Molybdenum (VI) Using Unloaded and Specially-Treated Polyurethane Foams" Analusius, 17 (1989) 612. 88. A.B. Farag, M.S. El-Shahawi and A.M. El-Wakil and M.N. Abbas. "The Extraction and Recovery of Some Organic Amines from Aqueous Solution by Polyurethane Foam" Bull. NRC, Egypt, 14 (1989) 29. 89. A.B. Farag, M.S. El-Shahawi and A.M. El-Wakil and M.N. Abbas "Collection and Recovery of Some Mono and Dicarboxylic Acids on Polyurethane Foam". Bull. NRC, Egypt, 14 (1989) 39. 90. A.M. El-Wakil, A.B. Farag and M.S. El-Shahawi. "Iodometric Microgram Determination of Manganese (II) in Aqueous Media by an Indirect Chemical Amplification Reactions" Talanta, 36 (1989) 783. 91. A.M. El-Wakil and M.S. El-Shahawi. "Polyfunctional Amino Acid Schiff Base Complexes of Copper (II)". Proc. 2nd Chem. Conf., Faculty of Science, Mansoura University, Egypt, II (1988) 408. 92.M.S. El-Shahawi and A.M. El-Hendawy "Spectroscopic Studies of Copper (II) Schiff Base Complexes Involving Polyfunctional Amino Acids". Proc. 2nd. Chem. Conf., Faculty of Science, Mansoura University, Egypt, II (1988) 413. 93. A.B. Farag, M.S. El-Shahawi and A.M. El-Wakil. "Removal of Organic Pollutants f rom Aqueous Solution. Part II: Comparative Study of the Concentration of Some Phenols by Loaded and Unloaded Open Cell Polyurethane Foams". Proc. 2nd. Chem. Conf., Faculty of Science, Mansoura University, Egypt, II (1988) 405. 94. A.B. Farag, A.M. El-Wakil and M.S. El-Shahawi. "Collection and Separation of Some Organic Insecticides on Polyurethane Foam Columns". Fresenius Z Anal. Chem. 324 (1986) 59. 95.D.H. Brown, W.E. Smith, M.S. El-Shahawi and M.F. K. Wazier. "Chromium (III) Complexes with Sugars". Inorg. Chimica Acta, 124 (1986) L25. 96. A.B. Farag, A.M. El-Wakil and M.S. El-Shahawi. "Separation of Cadmium (II), Iron(III), Nickel(II) and Copper(II) in Aqueous Solution Using Adogen-foam Columns". Bull. Soc. Chim. Belg. 94 (1985) 631. 97. A.B. Farag, A.M. El-Wakil and M.S. El-Shahawi. "Detection and Semiquantitative Determination of Nickel with Dimethyl-glyoxime Loaded Foam". Talanta, 29 (1982) 789. 98. A.B. Farag, A.M. El-Wakil and M.S. El-Shahawi. "Qualitative and Semiquantitative Determination of Iron (III) in Aqueous Thiocyanate Solution Using Tricaprylylamine Foam". Ann. Chim. (Rome), 72 (1982) 103. 99. A.B. Farag, A.M. El-Wakil and M.S. El-Shahawi. "Qualitative and Semiquantitative Determination of Chromium (VI) in Aqueous Solution Using 1, 5 Diphenylcarbazide Loaded Foam" Analyst (London), 106 (1981) 809.