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2 results on '"Afaf El-Said Mahgoub"'

1. Complex Formation of Uranyl Acetate with Tetracycline and its Utilization for their Microdetermination

Author

A. Kasem, Afaf El-Said Mahgoub, and E.M. Khairy

Subjects
Chemical Phenomena, Spectrophotometry, Infrared, Tetracycline, Inorganic chemistry, Complex formation, Pharmaceutical Science, Uranyl acetate, Acetates, chemistry.chemical_compound, Drug Stability, Spectrophotometry, medicine, Chemical Precipitation, medicine.diagnostic_test, Chemistry, Microchemistry, Electric Conductivity, Uranyl, Stability constants of complexes, Solvents, Uranium, Spectrophotometry, Ultraviolet, medicine.drug, Nuclear chemistry
Abstract

Conductometric and spectrophotometric (covering the visible, UV, and IR ranges) studies as well as microanalyses of uranyl complexes with tetracycline revealed the existence of the 1:1 complex species. The mean stability constant of the 1:1 complex, as determined spectrophotometrically, amounted to 1.2 × 105. This finding permits the use of the procedure for the microdetermination of tetracycline using UO2+2ion or vice versa.

Published
1974
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2. Mixed ligand complexes of palladium(II) with diethylenetriamine as a primary ligand and amino acids as secondary ligands

Author

Mohamed M. Shoukry, Wafaa M. Hosny, and Afaf El-Said Mahgoub

Subjects
Ligand, Inorganic chemistry, Metals and Alloys, chemistry.chemical_element, Non-innocent ligand, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Diethylenetriamine, Polymer chemistry, Materials Chemistry, Titration, Chelation, Equilibrium constant, Organometallic chemistry, Palladium
Abstract

Equilibrium studies of mixed ligand complexes of palladium(II) containing diethylenetriamine as a primary ligand and amino acids as secondary ligands were made by the pH titration method at 25° C and ionic strengthM=0.1. Different equilibrium constants, characteristic of binary and mixed ligand complexes were calculated and the chelation mode was deduced from conductivity measurements.

Published
1987
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