_1582616864 1582616864 Hamid Shirkhanloo sahar.zi67@gmail.com Hamid Shirkhanloo Analytical Methods in Environmental Chemistry Journal AMECJournal 2645-5382 2645-5552 12 25 2019 2 04 10.24200/amecj.v2.i04 http://journal.amecj.com/index.php/AMECJ-01/issue/view/10 Negar Motakef Kazemi Masoumeh Yaqoubi In this research, bismuth oxide (Bi2O3) nanostructures were prepared via chemical method at 90 °C for 3 h. the results samples were characterized by Fourier transform infrared (FTIR) for determination of functional groups, X-ray diffraction (XRD) for evaluation of crystal structure, dynamic light scattering (DLS), scanning electron microscope (SEM) for presentation of morphology and size, energy-dispersive X-ray spectroscopy (EDS) for determination of chemical composition, and diffuse reflection spectroscopy (DRS) for ultraviolet (UV) blocking. Also, the Bi2O3 nanostructures were used for benzene extraction from waters in pH=5-7. By procedure, 30 mg of Bi2O3 mixed with hydrophobic ionic liquid ([HMIM][PF6]) and injected to water samples. After shaking and centrifuging, benzene removed from water by ionic liquid-micro solid phase extraction (IL-μSPE) and determined by gas chromatography with flame ionization detector (GC-FID). The absorption capacity and recovery was obtained 167.8 mg per gram of Bi2O3 and more than 96%, respectively. 12 26 2019 5 14 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v2.i04.79 http://journal.amecj.com/index.php/AMECJ-01/article/view/79 http://journal.amecj.com/index.php/AMECJ-01/article/download/79/146 http://journal.amecj.com/index.php/AMECJ-01/article/download/79/146 http://journal.amecj.com/index.php/AMECJ-01/article/download/79/148