sensitive, direct and rapid spectrophotometric method for the determination of rantidine hydrochloride through ion-associate complex formation, Egypt. J. of appl. Sci., 24(11) . Preparation and characterization of transition metal mixed nanooxides using Co-preciptation method Utilization of cloud-point preconcentration for spectrophotometric determination of trace amounts of Molybdenum (VI) in plants and water samples Effect of organic acids precursors on the morphology and size of ZrO2 nanoparticles for photocatalytic degradation of Orange G dye from aqueous solution Sensitive, Direct and Rapid Spectrophotometric Determination of Loxoprofen through Ion Associate Complex Formation and First Derivative Methods SYNTHESIS, SPECTROSCOPIC STUDIES AND BIOLOGICAL EVALUATION OF Co(II), Ni(II), Cu(II) and Zr(IV) COMPLEXES OF AZO DYES AND THIAMINE HYDROCHLORIDE AS ANTIMICROBIAL AGENTS Synthesis of MgO Nanoparticles from Different Organic Precursors; Catalytic Decontamination of Organic Pollutants and Antitumor Activity Impregnation of task-specific ionic liquid into a solid support for removal of neodymium and gadolinium ions from aqueous solution Effect of organic acids precursors on the morphology and size of ZrO2 nanoparticles for photocatalytic degradation of Orange G dye from aqueous solutions Synthesis, Cytotoxicity, Molecular Docking and Molecular Modelling Studies of Complexes involving O, N-Donor ligands Utilization of a plasticized PVC optical sensor for the selective and efficient detection of cobalt(II) in environmental samples Performance Evaluation of Fixed Bed Column Packed with Ionic Liquid Impregnated Silica for Separation of Gadolinium and Neodymium from Aqueous Solutions Islam M. I. Moustafa* , El - Sayed M. Mabrouk and Mona M. Ashraf Chemistry Department, Faculty of Science, Benha University, Benha, Egypt MnO - NiO NP’s, Antibacterial, Anticancer, Photocatalysis, MG+ Pollutant Sensitive, Direct and Rapid Methods for Determination of Flurbiprofen through Ion Associate Complexes and First Derivative Spectrophotometry Superparamagnetic Nano α-Fe2O3 and TiO2 as Photocatalysts and Adsorbents in Wastewater Treatment; Evaluation of Photocatalytic Activity and Biological Response Preparation and characterization of poly nano-cerium chloride for 99Mo production based on neutron activation reactions Photocatalytic Removal of Organic Pollutants from Industrial Wastewater Using MnO, NiO and Mixed MnO-NiO NP’s as Catalyst Spectrophotometric quantification of germanium (IV) in environmental samples using chemically modified chitosan sorbent and optimized cloud phase extraction method. Synthesis of MgO-ZrO2 Mixed Nanoparticles via Different Precursors Identification of their Destructive Action for Organic Pollutants