_1597150303 1597150303 Hamid Shirkhanloo sahar.zi67@gmail.com Hamid Shirkhanloo Analytical Methods in Environmental Chemistry Journal AMECJournal 2645-5382 2645-5552 06 25 2020 3 02 10.24200/amecj.v3.i02 http://journal.amecj.com/index.php/AMECJ-01/issue/view/12 Saeed Fakhraie Ali Ebrahimi A novel sorbent based on MIL-101(Cr) nanoadsorbent as MOF structure was used for nickel extraction from water and wastewater samples. In this study, 30 mg of MIL-101(Cr) nanoadsorbent dispersed in 50 mL of water or wastewater samples, after sonication and adjusting pH =8.5, the nickel ions was extracted by carboxyl groups of terephthalic acid (MOF-(C6H4 (COO)-2…. Ni2+) by dispersive suspension micro solid phase extraction (DS-μ-SPE).The MOF was separated from liquid phase with filter membrane (0.2 μm), eluted with 0.5 mL of nitric acid as back-extraction solution and finally, the nickel concentration in eluent determined by atom trap-flame atomic absorption spectrometry (AT-FAAS) after dilution with DW up to 1 mL.The LOD, the linear range and preconcentration factor were achieved 1.5 µg L−1, 5-160 µg L−1 and 49.7, respectively.The absorption capacity of MOF for nickel was obtained 136.8 mg g-1.The results of procedure were validated by spiking of samples and ET-AAS analyzer. 06 28 2020 59 73 10.24200/amecj.v3.i02.103 http://journal.amecj.com/index.php/AMECJ-01/article/view/103 http://journal.amecj.com/index.php/AMECJ-01/article/download/103/203 http://journal.amecj.com/index.php/AMECJ-01/article/download/103/203 http://journal.amecj.com/index.php/AMECJ-01/article/download/103/204