_1546773107 1546773107 Hamid Shirkhanloo sahar.zi67@gmail.com Hamid Shirkhanloo Analytical Methods in Environmental Chemistry Journal AMECJournal 2645-5382 0000-0000 12 01 2018 1 01 Bahareh Fahimirad Alireza Asghari In this research, a magnetic graphitic carbon nitride (g-C3N4-SnFe2O4) was successfully synthesized and utilized as an efficient adsorbent for nickel (Ni2+) separation/extraction from vegetable samples by ultrasound-assisted magnetic dispersive micro solid-phase extraction (UA-M-D-μSPE). After separation and preconcentration step, Ni ions were determined via micro-sampling flame atomic absorption spectrometry (MS-FAAS). A successful synthesis of g-C3N4-SnFe2O4 was investigated by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and vibrating sample magnetometer (VSM). The optimization of adsorption and desorption steps was effectively studied by the on-at-a time method. In addition, under the optimum experimental conditions, the limits of detection (LODs), the linear ranges (LR) and relative standard deviations (RSDs%, for n = 5) were obtained 1.0 μg.L−1, 4.0 ─ 500.0 μg.L−1, and 1.4 respectively. 12 12 2018 47 56 10.24200/amecj.v1.i01.36 http://journal.amecj.com/index.php/AMECJ-01/article/view/36 http://journal.amecj.com/index.php/AMECJ-01/article/download/36/49 http://journal.amecj.com/index.php/AMECJ-01/article/download/36/49 http://journal.amecj.com/index.php/AMECJ-01/article/download/36/50 http://journal.amecj.com/index.php/AMECJ-01/article/download/36/51