الفهرس 
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Abstract
Effect of different supporting materials such as mesoporous silica and hydroxysodalite nanoparticles on the analytical efficiency after modified of these supports with organic modifiers and pre-concentration of different template ions (Cd(II), Cu (II), Hg (II) and Pb (II)) from various matrices. Some organic ligands such as (dibenzoylmethane, isatoic anhydride reagent and 5-(2-chloroacetamido)-2-hydroxybenzoic acid) were loaded onto the surface of mesoporous silica and hydroxysodalite nanoparticles (MCM-41, G8 and Z8). The structure of these adsorbents was characterized by Fourier transform infrared spectroscopy, elemental analysis, scanning electron microscopy and Powder X-Ray Diffraction spectra. To increase the selectivity and applicability of the adsorbents, different parameter including contact time, pH, initial template concentration and temperature will be extensively studied utilizing batch procedure. Moreover, the kinetics study and thermodynamic parameters will be applied. Additionally, the batch technique will be applied for determination and separation of the specific trace chemical residual ions using new prepared adsorbents. In addition, a new hydroxysodalite nanoparticles composites loaded with chitosan polymer will be used for solid phase extraction of trace chemical residual ions from aqueous solutions. The properties and structure of the prepared hydroxysodalite nanoparticles composites will be confirming utilized Fourier transform infrared spectroscopy, scanning electron microscopy, Transmission electron microscopy, Energy dispersive X-ray Spectrum, Powder X-Ray Diffraction spectra. Furthermore, the extracted trace heavy metal ions will be determined by Flame atomic absorption spectrometry and Inductively Coupled Plasma- Optical Emission spectrometry. Different parameters like contact time, pH, initial concentration of heavy metals and temperature will be optimized to enhance efficiency, selectivity and pre-concentration from various template ions.