TY - JOUR ID - 125410 TI - Preconcentration and Separation of Ultra-Trace Cu (II) with Disks of Octadecyl Silica Membrane Modified Nano-Fe3O4-Encapsulated-Dioctyl Phthalate and Linked-Diethylenetriamine JO - Advanced Journal of Chemistry, Section A JA - AJCA LA - en SN - 2645-7768 AU - Moghimi, Ali AU - Abniki, Milad AD - Department of Chemistry, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran Y1 - 2021 PY - 2021 VL - 4 IS - 2 SP - 78 EP - 86 KW - Cu2+ KW - Separation KW - Octadecyl silica membrane KW - Fe3O4-encapsulated KW - Magnetic nano- Fe3O4 -DOP- DTA DO - 10.22034/ajca.2021.260252.1230 N2 - In this study, an efficient method was performed to extract and measure the Cu(II) metal ions using the modified disks of octadecyl silica membrane by nano-Fe3O4-encapsulated-dioctyl phthalate and linked-diethylenetriamine (magnetic nano- Fe3O4 -DOP- DTA). This method involves forming a complex on the ENVI-18 DISKTM surfaces, followed by maintained species removed from the surface with the least amount of organic solvent. The act of elution in this technique is very impressive. The important factors are including the pH, stripping solvent, ligand values, rate of sample flow, and the effect of interfering ions were evaluated. The preconcentration factor was 500 in the optimum analysis situations of whole parameters. Analysis parameters contain the limit of detection and the most capacity of copper (II) ions sorption was achieved 6 μg/L and 385 ± 5 µg, respectively. Finally, the Cu2+ ions were extracted in various aqueous solutions by this technique. UR - http://www.ajchem-a.com/article_125410.html L1 - http://www.ajchem-a.com/article_125410_2d8ed69d5e1d94774783a4b07b13be5d.pdf ER -