_1591679289 1591679289 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 Azwan Morni Seyed Mojtaba Mostafavi *© A efficient method based on 4-methylsulfanyl thiophenol (MSTP, C7H8S2) and ionic liquid    ([BMIM][PF6]) was used for mercury (Hg) separation and preconcentration from wastewater of  petrochemical industries. The 0.01 mile molar of MSTP, 80 mg of [BMIM][PF6] was diluted with  0.2 mL of ethanol (ET 98%). The mixture was injected to 10 mL of wastewater samples, shacked by ultrasonic bath for 5.0 min and cloudy solution was achieved by ionic liquid micelles  at pH=7.0. The  mercury ions was complexed with MSTP and extracted on micelles (IL/ET) by cloud point dispersive liquid-liquid microextraction (CP-DLLME) at 50oC before determined by cold vapor atomic absorption spectrometry (CV-AAS). The favorite extraction for mercury with low LOD (15 ng L-1) and good linear rages (0.05- 6.2 μg L-1) was achieved (RSD<5%). The main parameters such as, pH, sample volumes, amount of MSTP, amount of IL and ultra-sonic time were optimized.  03 30 2020 63 71 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v3.i01.97 http://journal.amecj.com/index.php/AMECJ-01/article/view/97 http://journal.amecj.com/index.php/AMECJ-01/article/download/97/182 http://journal.amecj.com/index.php/AMECJ-01/article/download/97/182 http://journal.amecj.com/index.php/AMECJ-01/article/download/97/183 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 Jamileh Esmaeili Samira Shirooei Azam Bakhtiarian*© The low concentration of copper (Cu2+) can be effected on the central nervous system (CNS) and caused to multiple sclerosis (MS). Although many antibiotics can treat the bacterial infections but some of antibiotics decrease essential metal concentrations in human body and must be controlled by determining. In this study, in-vitro extraction of copper (Cu2+) with amoxicillin/clavulanic acid (AMOXC) has been studied due to interacting with metals. By procedure, Cu2+ ions were separated from blood samples by ultrasound assisted-dispersive centrifuge liquid-liquid micro extraction (USA-DC-LLME). The mixture of AMOXC (0.01 g), ionic liquid ([BMIM][PF6]) and acetone injected to 10 ml of serum blood sample at human pH=7.2. After extraction, the concentration of Cu2+ ions was determined by flame atomic absorption spectrometry (F-AAS). The LOD, enrichment factor (EF), linear range (LR) and working range (WR) were obtained 6 μg L-1, 9.92, 0.018-0.5 mg L-1 and 0.02-2.58 mg L-1, respectively (RSD<1.1%). 03 30 2020 55 62 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v3.i01.94 http://journal.amecj.com/index.php/AMECJ-01/article/view/94 http://journal.amecj.com/index.php/AMECJ-01/article/download/94/180 http://journal.amecj.com/index.php/AMECJ-01/article/download/94/180 http://journal.amecj.com/index.php/AMECJ-01/article/download/94/181 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 Alisha Saanvi Ringo Krishnan Amoli Hassan Rmesh K. Gupta*© In recent years have seen a surge of increased interest in the exfoliation of boron nitride (h-BN) due to its exciting electrical, thermal, photonics mechanical properties and sensing. Several approach to have emerged describing the exfoliation, functionalized and solubilization of h-BN. In this study, we report on a straightforward approach to modify the surface and its application as a new type of biomedical applications. The prepared product is structurally characterized by FTIR spectroscopy, field emission (FESEM), TGA technique, XPS spectrum, and BET surface area measurements. Nano- composites were immobilized on electrodes to detect the glucose, L-cysteine in buffer medium by cyclic voltammetry (CV), square wave voltammetry (SWV), and impedance spectroscopic (EIS). potential application of the covalent functionalization, cheap precursors, biodegradability and multifunctionality of high-performance composites boron nitride, they could be used for a wide range of the future biomedical applications. 03 29 2020 49 54 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v3.i01.89 http://journal.amecj.com/index.php/AMECJ-01/article/view/89 http://journal.amecj.com/index.php/AMECJ-01/article/download/89/178 http://journal.amecj.com/index.php/AMECJ-01/article/download/89/178 http://journal.amecj.com/index.php/AMECJ-01/article/download/89/179 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 Amir Vahid*© Masoud Sohrab Sohrab In this study oils used direct influence sodium metallic on oxidation products and refining with the Mesoporous silicate material (MCM-41) and also silicate absorbents was synthesized and functionalized with aluminum salt through wet impreghation method (18wt%Al-MCM-41) (36wt% Al-MCM-41). Physical and structural properties has been investigated by FT-IR, BET,XRD and FESEM methods which shows a succful synthesis of the nano porous material. First step for reducing acid number oil we used direct reaction beetwen sodium metalic and used oil, after this step refining used oil by MCM-41 abosrbent has done. The effect of some parameters such as contact time, temperature and the dosage  has been determined and optimized by respons surface method (RSM). The results show that acid number decrease obtained 150 ,60min and 200% of dosage. Optimum condation for absorbent reaction products and new oxidation products by MCM-41 obtained contact time of 120min temperature (120oC) and dosage 200% . 03 29 2020 27 40 10.24200/amecj.v3.i01.74 http://journal.amecj.com/index.php/AMECJ-01/article/view/74 http://journal.amecj.com/index.php/AMECJ-01/article/download/74/174 http://journal.amecj.com/index.php/AMECJ-01/article/download/74/174 http://journal.amecj.com/index.php/AMECJ-01/article/download/74/175 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 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 Shahnaz Teimoori Amir Hessam Hassani *© Mostafaa Panaahie In this study, the phenyl sulfonic acid (PhSA) modified carbon nanotubes (CNTs) were used for benzene removal from waters by  (D- μSPE). Due to adsorption mechanism, π–π interactions was provided between the aromatic ring of benzene with the surface (SO3H) and phenyl ring (-C6H5) of CNTs, respectively. Therefore, 20-100 mg of sorbent, concentration of benzene (0.1–10 mg L-1), pH (1-12) and contact time (5–120 min) were investigated and optimized for benzene removal from water samples in static system. The concentration of benzene in water was determined by (SHS-GC-MS). The results showed, the Langmuir-Freundlich (LF) isotherm provided the best fit for benzene sorption. By using the Langmuir model, the maximum adsorption capacity of 117.34 and 22.86 mg/g was achieved for benzene removal from waters with CNTs@PhSA and CNTs, respectively. Under optimal conditions, adsorption efficiency of CNTs@PhSA and CNTs was obtained 97.7% and 20.6 % for benzene removal from water samples, respectively.  03 26 2020 17 26 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v3.i01.91 http://journal.amecj.com/index.php/AMECJ-01/article/view/91 http://journal.amecj.com/index.php/AMECJ-01/article/download/91/172 http://journal.amecj.com/index.php/AMECJ-01/article/download/91/172 http://journal.amecj.com/index.php/AMECJ-01/article/download/91/173 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 Anne Trégouët Trégouët Masoud Khaleghi Abbasabadi Pooya Gholami *© Nickel (Ni) is toxic effect on human body and must be determined in human blood samples. In this study, Ni ions separated and preconcentrated from blood samples based on magnetic Fe3O4-supported amine/amide-functionalized graphene oxide (Fe3O4@A/A-GO) nanoparticles by dispersive sonication micro solid phase extraction (DS- μ-SPE).  By procedure, 10 mg of Fe3O4@A/A-GO was dispersed in 10 mL of human blood samples with sonication for 5.0 min and then separated from liquid phase with magnetic accessory. The Ni ions was extracted based on amine/amide covalence bonding of Fe3O4@A/A-GO sorbent (Ni---: NH2). Then, the Ni ions back-extracted from Fe3O4@A/A-GO in low pH with nitric acid (0.2 mL, 0.3 M) which was  diluted with DW  up to 0.5 mL and finally, was determined by ET-AAS(peak area). The LOD, linear range (LR), enrichment factor (EF) and absorption capacity (AC) were obtained 35 ng L-1, 0.15 -7.2 μg L-1, 19.8 and 131.6 mg g-1, respectively.  03 25 2020 5 16 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v3.i01.96 http://journal.amecj.com/index.php/AMECJ-01/article/view/96 http://journal.amecj.com/index.php/AMECJ-01/article/download/96/170 http://journal.amecj.com/index.php/AMECJ-01/article/download/96/170 http://journal.amecj.com/index.php/AMECJ-01/article/download/96/171