Quantitative analysis and sorption of cadmium in environmental samples with a functionalized synthetic polymer |
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| Authors: | Homayon Ahmad Panahi Alireza Feizbakhsh Rozita Abdolahi Fard Elham Moniri |
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| Institution: | 1. Department of Chemistry, Islamic Azad University, Central Tehran Branch, Iranh.ahmadpanahi@iauctb.ac.ir;3. Department of Chemistry, Islamic Azad University, Central Tehran Branch, Iran;4. Department of Chemistry, Islamic Azad University, Varamin (Pishva) Branch, Iran |
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| Abstract: | Quantitative analysis of cadmium in environmental samples was achieved with a polymeric sorbent synthesized by copolymerization of N,N-dimethylacrylamide and allyl glycidyl ether/iminodiacetic acid as chelating monomers with N,N′-methylenebisacrylamide as cross-linker. The polymer was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, elemental analysis, and scanning electron microscopy. The sorption capacity of the functionalized sorbent was 70 mg g?1. The equilibrium sorption data of Cd(II) on polymeric sorbent were analyzed using Langmuir, Freundlich, Temkin, and Redlich–Peterson models. Based on equilibrium adsorption data, the constants at pH 4.2 and 20 °C were determined for the first three as 0.33 (L mg?1), 17.5 (mg g?1) (L mg?1)1/n, and 12.9 (J mol?1). Recovery of 94% of the metal ion was obtained with 0.5 mol L?1 nitric acid as an eluting agent. |
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| Keywords: | quantitative analysis high capacity sorbent cadmium preconcentration isotherm study |
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