_1591679148 1591679148 Hamid Shirkhanloo sahar.zi67@gmail.com Hamid Shirkhanloo Analytical Methods in Environmental Chemistry Journal AMECJournal 2645-5382 2645-5552 03 30 2020 3 01 10.24200/amecj.v3.i01 http://journal.amecj.com/index.php/AMECJ-01/issue/view/11 Nafiseh Esmaeili Nadia Kokabi Eskandar Kolvari*© A simple and applied method based on O-3-Tert-butylphenyl N-(6-methoxy-2-pyridyl)-N-methylthiocarbamate (Pyributicarbamate; TBMPMTC) was used for arsenic speciation (AsIII and AsV) in urine and water samples by dispersive liquid-liquid microextraction (DLLME) procedure. The concentrations of arsenic in the liquid phase were determined by hydride generation atomic absorption spectrometry in the presence of flame accessory (HG-AAS). By procedure, a mixture of ionic liquid (0.1 g, [APMIM][PF6]@[HMIM][PF6]), acetone (0.2 mL) and pyributicarbamate was injected into wastewater sample containing arsenic (AsIII and AsV) ions, which were already extracted by pyributicarbamate at the optimized pH. The task-specific ionic liquid (TSIL) of 1-3-aminopropyl)-3-methyl-imidazoliumhexafluorophosphate [APMIM][PF6] was chemically synthesized and used for increasing of As(V) extraction in the liquid phase. As(III) was extracted based on the sulfur bond of pyributicarbamate at pH=5.3. As (V) can be extracted by amine group of TBMPMTC and [APMIM][PF6] at pH=3.0 (As(V) --- : NH2). The influence of parameters was studied. 03 28 2020 41 48 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v3.i01.93 http://journal.amecj.com/index.php/AMECJ-01/article/view/93 http://journal.amecj.com/index.php/AMECJ-01/article/download/93/176 http://journal.amecj.com/index.php/AMECJ-01/article/download/93/176 http://journal.amecj.com/index.php/AMECJ-01/article/download/93/177