چكيده به لاتين
Anthracene knitted polymer is a type of compression polymerization in which anthracene rings are Connect to each other under a simple, one-step process of the Friedel-Craft reaction.The absorption properties of anthracene knitted polymer are based on hydrophobic properties and π-π interactions. By using simple chemical modifications by a nucleophile such as methylamine, the polar properties of these compounds can be increased and a high dispersion in the aqueous medium can be achieved, allowing the simultaneous extraction and removal of organic and inorganic compounds in different matrices.The advantages of this adsorbent include high surface area, high chemical and thermal stability, high adsorption capacity, low density and simultaneous removal of organic and inorganic compounds.The method of dispersive micro solid phase extraction is one of the methods of adsorption methods that is used to removel and separatetion of metal ions. This method is based on the dispersion of the adsorbent directly into the sample solution so that the removal process takes place in the sample solution. In the present study, for the first time, knitting anteracene containing TiO2 nanoparticles modified by methyl amine was used as solid phase for simultaneous removal of cadmium, zinc and copper ions by dispersive micro solid phase extraction method in aqueous medium. After adsorption process, residual concentration by inductively coupled plasma atomic emission spectroscopy was measured. The advantages of this adsorbent include simple synthesis and modification, high thermal stability, high adsorption capacity and high surface area. The effect of various parameters such as initial metal ions concentration, initial pH value, contact time and adsorbent dosage were investigated to achieve the highest removal of copper, zinc and cadmium ions.Under optimal conditions, the highest removal efficiency for Cu2+, Zn2+ and Cd2+ ions was 95, 92 and 90%, respectively.the equilibrium absorption capacity obtained was calculated to be 26.65, 25.16 and 24.97 μg / mg, respectively. the using two-parameter adsorption isotherm models including Langmuir, Freundlich, and Temkin were studied.The results showed that the best absorption isotherm model for all three ions is the Freundelich isotherm.Kinetic studies were performed using the pseudo-first-order kinetic model and the pseudo-second-order kinetic model. Pseudo-second-order kinetic describes the best kinetic state of absorption.
