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1997
Issa, Y. M., S. S. Badawy, and A. S. Tag-Eldin, "PVC Membrane electrode for trinitrobenzenesulfonate and its use for indirect determination of amino acids", Mikrochimica Acta, vol. 126, pp. 319–324, 1997. Abstract
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Issa, Y. M., A. L. El-Ansary, O. E. Sherif, and M. M. El-Ajily, "Separation and spectroscopic characterization of new metal chelates of 8-arylazo-6-formyl-7-hydroxy-5-methoxy-2-methyl chromones", Transition Metal Chemistry, vol. 22, pp. 441–446, 1997. Abstract
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Rizk, M. S., Y. M. Issa, A. F. Shoukry, and E. M. Atia, "Spectrophotometric Determination of Lignocaine in Pure Form and in Pharmaceutical Preparations", Analytical Letters, vol. 30, pp. 2743–2753, 1997. Abstract
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Issa, Y. M., F. M. Abdel-Gawad, and H. M. Hussein, "Spectrophotometric Determination of Ofloxacin and Lomefloxacin Hydrochloride with Some Sulphonphthalein Dyes", Analytical Letters, vol. 30, pp. 2071–2084, 1997. Abstract
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1996
Shoukry, A. F., Y. M. Issa, M. S. Rizk, and R. M. El-Nashar, "Etilefrine Plastic Membrane Electrodes Based on Individual and Mixed Ion-exchangers of Etilefrinium Phosphotungstate and Tetraphenylborate", Analytical Letters, vol. 29, pp. 1463–1475, 1996. Abstract
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Badawy, S. S., Y. M. Issa, and A. S. Tag-Eldin, "Potentiometric determination ofL-dopa, carbidopa, methyldopa and aspartame using a new trinitrobenzenesulfonate selective electrode", Electroanalysis, vol. 8, pp. 1060–1064, 1996. Abstract
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Amin, A. S., and Y. M. Issa, "Selective spectrophotometric method for the determination of erythromycin and its esters in pharmaceutical formulations using gentiana violet", Journal of Pharmaceutical and Biomedical Analysis, vol. 14, pp. 1625–1629, 1996. Abstract
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Issa, Y. M., and A. S. Amin, "Spectrophotometric assay of cephalosporins in pharmaceutical products, using chromotrope 2B and chromotrope 2R", Mikrochimica Acta, vol. 124, pp. 203–209, 1996. Abstract
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Aboudan, M., A. F. Shoukry, and Y. M. Issa, "Trimethoprimium-Phosphotungstate Ion Associate as IonExchanger For Trimethoprimium IonSelective Electrode", Analytical Letters, vol. 29, pp. 19–28, 1996. Abstract
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1995
Amin, A. S., G. O. Elsayed, and Y. M. Issa, "Application of Alizarine Derivatives as Chromogenic Reagents for the Spectrophotometric Determination of Some Sulfa Drugs", Microchemical Journal, vol. 51, pp. 367–373, 1995. Abstract
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Shoukry, A. F., Y. M. Issa, H. Ibrahim, and S. K. Mohamed, "Atomic emission spectrometric determination of antazoline, hydralazine and amiloride hydrochlorides, and quinine sulfate based on formation of ion associates with manganese thiocyanate", Analyst, vol. 120, 1995. Abstract
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Shoukry, A. F., Y. M. Issa, H. Ibrahim, and S. K. Mohamed, "Atomic emission spectrometric determination of antazoline, hydralazine and amiloride hydrochlorides, and quinine sulfate based on formation of ion associates with manganese thiocyanate", Analyst, vol. 120, 1995. Abstract
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Issa, Y. M., A. H. M. Fattah, M. M. Omar, and A. A. Soliman, "Chelation behaviour of lanthanides with some thio-Schiff bases", Monatshefte Fur Chemie, vol. 126, pp. 163–171, 1995. Abstract
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Issa, Y. M., and A. S. Amin, "Conductometric titration of pindolol and propranolol using ammonium reineckate and potassium tetracyanonickelate", Mikrochimica Acta, vol. 118, pp. 85–91, 1995. Abstract
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Issa, Y. M., H. Ibrahim, A. F. Shoukry, and S. K. Mohamed, "Indirect atomic absorption and atomic emission spectrometric determination of antazoline, hydralazine and amiloride hydrochlorides and quinine sulphate", Mikrochimica Acta, vol. 118, pp. 257–263, 1995. Abstract
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Issa, Y. M., A. H. M. Fattah, M. M. Omar, and A. A. Soliman, "Komplexierungsverhalten von Lanthaniden mit einigenthio-Schiff schen Basen", Monatshefte Fur Chemie, vol. 126, pp. 163–171, 1995. Abstract
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Issa, Y. M., A. F. Shoukry, M. S. Rizk, and E. M. Atia, "Lignocaine ion-selective electrodes based on its ion-associates with cobalt thiocyanate, phosphomolybdate and reineckate complex ions", Journal of Chemical Technology and Biotechnology, vol. 64, pp. 379–385, 1995. Abstract
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Issa, Y. M., W. F. El-Hawary, H. A. Abdel-Salam, and R. M. Issa, "Separation and structural studies of manganese(II), cobalt(II), nickel(II), copper(II) and cadmium(II) complexes of benzilic and mandelic esters", Transition Metal Chemistry, vol. 20, pp. 423–425, 1995. Abstract
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Amin, A. S., and Y. M. Issa, "Spectrophotometric determination of 6-aminopenicillanic acid using bromophenol blue and bromothymol blue", Mikrochimica Acta, vol. 117, pp. 187–194, 1995. Abstract
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El-Bahnasawy, R. M., E. - S. El-Shereafy, T. I. Kashar, and Y. M. Issa, "Structural studies on new copper(II) phenylhydrazoacetylacetone isonicotinoyl hydrazone complexes", Transition Metal Chemistry, vol. 20, pp. 104–106, 1995. Abstract
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Amin, A. S., G. O. El-Sayed, and Y. M. Issa, "Utility of certain ?-acceptors for the spectrophotometric determination of norfloxacin", Analyst, vol. 120, 1995. Abstract
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Amin, A. S., G. O. El-Sayed, and Y. M. Issa, "Utility of certain ?-acceptors for the spectrophotometric determination of norfloxacin", Analyst, vol. 120, 1995. Abstract
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1994
Issa, Y., "Analytical Utility of Direct Coupled Plasma Atomic Emission-Spectrometry for the Indirect Determination of Papaverine Hydrochloride in Pharmaceutical Preparations", Microchemical Journal, vol. 50, pp. 68–77, 1994. Abstract
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Issa, Y. M., A. F. Shoukry, H. Ibrahim, and S. K. Mohamed, "Atomic Emission Spectrometric Determination of Antazoline, Hydralazine, Amiloride, Thiamine and Quinine Based on Formation of Ion Associates with Ammonium Reineckate", Analytical Letters, vol. 27, pp. 731–742, 1994. Abstract
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Amin, A., A. ELANSARY, and Y. Issa, "Colorimetric determination of amoxycillin in pure form and in pharmaceutical preparations", Talanta, vol. 41, pp. 691–694, 1994. Abstract
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