Analytical Methods in Environmental Chemistry Journal <p>The Analytical Methods in Environmental Chemistry journal&nbsp;is a peer-reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Analytical Methods in Environmental Chemistry&nbsp;publishes articles of modern analytical chemistry, cover innovations in the analytical techniques by nanotechnology, new analytical methods in Environmental and occupational health. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry as well as established instrumentation methods such as atomic absorption spectrometry, gas chromatography, and <em>High-performance liquid chromatography</em> methods will be considered.</p> <p>&nbsp;</p> en-US <p>&nbsp;JOURNAL PUBLISHING AGREEMENT</p> <p>&nbsp;<strong>PLEASE PROVIDE US THE FOLLOWING INFORMATION,</strong></p> <p><strong>&nbsp;</strong>Article entitled:</p> <p>Corresponding author:</p> <p>To be published in the journal:</p> <p>&nbsp;<strong><u>Your Status </u></strong></p> <p><strong>&nbsp;</strong><strong>I am the sole author of the manuscript </strong></p> <ul> <li class="show">I am an Iranian government employee.</li> <li class="show">I am a European government employee</li> <li class="show">I am a Asian government</li> <li class="show">None of the above</li> </ul> <p>&nbsp;<strong>I am one author signing on behalf of all co-authors of the manuscript </strong></p> <ul> <li class="show">I am an Iranian government employee.</li> <li class="show">I am a European government employee</li> <li class="show">I am a Asian government</li> <li class="show">None of the above</li> </ul> <p>&nbsp;Please tick the above blanks (as appropriate), review the Journal Publishing Agreement, and then sign and date the document in black ink.</p> <p><strong>Published Journal Article: </strong>the author may share a link to the formal publication through the relevant DOI. Additionally theses and dissertations which contain embedded Published Journal Articles as part of the formal submission may be hosted publicly by the awarding institution with a link to the formal publication through the relevant DOI. Any other sharing of Published Journal Articles is by agreement with the publisher only.</p> <p>&nbsp;Signed: ______________________________________ Name printed: ___________________________________________</p> <p>&nbsp;Title and Company (if employer representative): _______________________Date: __________________________________</p> <p><a href="\protected\files\journals\FORMS\Copyright-Form.pdf" target="_blank" rel="noopener"><strong>DOWNLOAD COPYRIGHT FORM</strong></a></p> (Hamid Shirkhanloo) (Sahar Zargari) Sat, 30 Dec 2023 00:00:00 +0000 OJS 60 Surface-engineered TiO2 nanoparticles incorporated Chitosan polymer membrane for seawater desalination: Fabrication, characterization, and performance evaluation <p>The effect of surface coating over titanium dioxide nanoparticles (TiO<sub>2</sub>-NPs) incorporated with chitosan (TiO<sub>2</sub>-NPs/chitosan) was evaluated as a <em>reverse osmosis membrane</em> (RO) for enhanced performance on seawater desalination. The impact of surface coating on the chitosan membrane performance in seawater reverse osmosis (SWRO) was investigated by altering the mass of TiO<sub>2</sub>-NPs (0.25 g and 0.5 g) used for the surface coating RO membrane. TiO<sub>2</sub>-NPs were applied to the membranes using a surface coating technique and dried to create a sturdy polymer structure. The characteristic of fabricated membranes shows the function group reflects on organic compounds from /chitosan membranes polymer (–OH, -CH, C=O, C-O-C, -CH<sub>3</sub>, C-O, and NH<sub>2</sub>). In addition, TiO<sub>2</sub>-NPs are expressed in the wavenumber range of 850-500 cm<sup>-1</sup>, which characterizes the presence of Ti-O-Ti bonds. Morphological and crystal analyses of TiO<sub>2</sub>-NPs incorporated in chitosan membrane show significantly smaller pores formed because TiO<sub>2</sub>-NPs are essential in the high permeability performance under the amorphous phase structure. Also, the high performance of fabricated membranes was evaluated against water flux and salt. Adding TiO<sub>2</sub>-NPs can decrease the water flux value by 23 L m<sup>-2 </sup>h<sup>-1</sup> and increase salt rejection by 52.94%. In optimized pH, the seawater desalination had efficient recovery.</p> Muhammad Nurdin, Corresponding Author,, Mike Delvinasari, La Ode Ahmad, Maulidyah Maulidiyah, Dwiprayogo Wibowo, Faizal Mustapa, Amir Mahmud, Muhammad Idris, Muh. Ramli (Author) ##submission.copyrightStatement## Thu, 28 Dec 2023 00:00:00 +0000 Rapid extraction and separation of mercury in water and food samples based on micelles and azo-thiazoles complexation before determination by UV-Vis spectrophotometer <p>A simple and sensitive procedure has been established for analyzing mercury (II) ions spectrophotometrically in the presence of micellar medium using three azo-thiazoles complexing reagents: 2-amino-6-(thiazole-2-yldiazenyl)-3-pyridinol (C<sub>8</sub>H<sub>7</sub>N<sub>5</sub>OS), 8-hydroxy-7-(thiazole-2-yldiazenyl) quinoline-5-sulfonic acid (C<sub>12</sub>H<sub>8</sub>N<sub>4</sub>O<sub>4</sub>S<sub>2</sub>), and 1-hydroxy-4-(thiazole-2-yldiazenyl)-2-naphthoic acid (C<sub>14</sub>H<sub>9</sub>N<sub>3</sub>O<sub>3</sub>S). H1 NMR spectra validated the three azo thiazoles synthesized material. Tween 80 (polysorbate 80) and cetyltrimethylammonium bromide (C<sub>19</sub>H<sub>42</sub>BrN as molecular biology) are micellar mediums to enhance sensitivity. Absorbances were measured for Hg (II) complexation with R<sub>1</sub>, R<sub>2</sub>, and R<sub>3</sub> at λ<sub>max</sub> of 617, 633, and 554 nm, respectively. The UV-Vis spectrophotometer showed calibration curves in the 0.2-15 mg L<sup>-1</sup>. The molar absorptivity, Sandell's sensitivity, detection, and quantification limits (LOD, LOQ) were determined. The interferences of various ions were investigated, and a statistical assessment of the results was performed. The methods have been applied for trace determination of mercury (II) in food and environmental water samples. For food samples, all samples were digested before complexation with the azo-thiazoles material at optimized pH before determination by UV-Vis spectrophotometry.</p> Hesham H. El-Feky, Corresponding Author,, Talaat Y. Mohammed, Alaa S. Amin, Mohammed A. Kassem (Author) ##submission.copyrightStatement## Fri, 29 Dec 2023 00:00:00 +0000 Removal and determination of carbon monoxide based on copper oxide immobilized on Zeolite 13X Nanocatalyst by catalytic oxidation process and gas flow analyzer <p>Carbon monoxide is one of the main air pollutants, mainly produced from the incomplete combustion of fossil fuels.&nbsp; This study aims to oxidize carbon monoxide by copper oxide nanoparticles immobilized on zeolite13X substrate<strong>. </strong>The present investigation was conducted to determine the effect of carbon monoxide concentration parameters (in the range of 200-1400 ppm) and reaction temperature (in the range of 100-500 °C) on the efficiency of carbon monoxide conversion by CuO/Zeolite 13X nanocatalyst. The design of the experiment and the determination of the number of experiments were analyzed using the central composite design method, and the statistical test of analysis of variance was done using the response surface method. Also, the structural and morphological characteristics of the nanocatalyst were investigated using BET, BJH, FE-SEM, EDX, and XRF tests. The results show that CuO/Zeolite 13X nanocatalyst efficiently oxidizes carbon monoxide. The highest conversion efficiency of 82.6% was obtained at a temperature of 400 °C and a carbon monoxide concentration of 500 ppm&nbsp;as the optimal conditions. According to the EDX test results, copper oxide nanoparticles with a weight percentage of 5.9% were loaded on the Zeolite 13X substrate. Design Expert11 software reduced the cubic model with an R<sub>2</sub> coefficient of 0.98.</p> Bahar Parsazadeh, Hasan Asilian Mahabadi, Corresponding Author,, Niloofar Damyar (Author) ##submission.copyrightStatement## Thu, 28 Dec 2023 00:00:00 +0000 Design and construction of pilot sludge drying package for the excess sludge in petrochemical industries: Heavy metals determination in sludge by polarography and atomic absorption spectrometry <p>In this research, according to the high amount of sludge in a petrochemical company, an iron package type of drying sludge bed was made/designed with carbon steel. Then, the drying sludge pond was filled with layers of sand with different mesh sizes. The excess sludge from the sedimentation pond was passed over this bed, and the amount of sludge removed by the bed was obtained at %96. The values of heavy metal and microbial forms were determined using the proposed method based on activated sludge after wastewater treatment. For the validation process, 10 mL of deionized water (DW) was mixed with 1.0 g of dried sludge with pure nitric acid (2% HNO<sub>3</sub>), and then the solid phase was filtered with the Whatman filter (WF). The concentration of heavy metals (As, Cd, Cu, Pb, Hg, Mo, Ni, Co, Se, Zn) in the remaining solution of sludge (mg kg<sup>-1</sup>) and wastewater (µg L<sup>-1</sup>) was extracted/ separated based on sulfur-doped graphene oxide adsorbent (SDGO) by solid-phase microextraction procedure (SPME) before being determined by the flame and hydride generation atomic absorption spectrometry (F-AAS; HG-AAS) which had similar range to the polarography analysis. The LOD, linear range and preconcentration factor (PF) for metals were obtained.</p> Mostafa Hassani, Corresponding Author,, Bahareh Azemi Motlagh (Author) ##submission.copyrightStatement## Fri, 29 Dec 2023 00:00:00 +0000 Removal of polypropylene nanoplastics from aqueous solution by biochar derived from Date palm fibers: Kinetics and isotherms studies <p>In this work, activated carbon (AC) derived from powder of date palm fibers (DPF) was examined as an adsorbent for removing polypropylene nanoplastics (PPNPs) from aqueous solutions. The adsorbent was characterized using XRD, FT-IR, and SEM analyses. Affecting parameters on removal efficiency in a batch reactor, such as contact time, concentration of PPNPs and amount of adsorbent, were evaluated and optimized. Equilibrium and kinetic studies are performed to understand adsorption mechanisms. In the batch system, 30 mL of polypropylene suspension (5-40 mgL<sup>-1</sup>) was added to Erlenmeyer flask. First, different amounts of AC adsorbent were added to the container, then microplastic was added to the reactor. The mixture was shaken on a shaker for four hours at 25<sup>o</sup>C. The flask was removed from the shaker, the concentration of PPNPs in the supernatant was measured, and a settling time of 30 min was obtained. A control suspension system without PPNPs nanoplastics (with biochar and without PPNPs) was also performed to evaluate carbon particle interference by turbidity measurements. Our results showed that kinetic data were consistent with the pseudo-second-order kinetic model. Equilibrium data for the adsorption of PPNPs on biochar represented by the Langmuir isotherm model is better than the Freundlich isotherm model.</p> Mohammad Reza Rezaei Kahkha, Corresponding Author,, Mahdi Rezaei Kahkha Zhaleh, Batool Rezaei Kahkha, Maryam Khodadadi, Mohsen Faghihi-Zarandi (Author) ##submission.copyrightStatement## Sat, 30 Dec 2023 00:00:00 +0000 Removal of manganese (II) in water samples by the aeration-filtration process and determination based on 5-Br-PADAP ligand by cathodic stripping voltammetry <p>In this study, manganese (Mn II) was determined in aqueous media by an electrochemical method, and its removal was evaluated using the aeration-filtration process (AFP). An electrochemical sensor based on carbon paste (EPC) modified with the 5-Br-PADAP ligand was used to measure Mn (II) in aqueous media. Through the optimization of analytical parameters in cathodic stripping voltammetry (CSV), real boreholes and well water samples could be analyzed for manganese content. The optimum parameters such as preconcentration potential (1100 mV), preconcentration time (240s), 5-Br-PADAP ligand concentration (20 µmol L<sup>-1</sup>), and electrode rotation speed during pre-concentration (1000 rpm) were studied and optimized. The detection limit (LOD) is estimated at 3 ´10<sup>-7</sup> mol L<sup>-1</sup> with a relative standard deviation (RSD) of 3.36%. The real samples showed that some water points have more concentration than the standard. A simple, effective, inexpensive, and rural-friendly method was used for treating manganese-rich water. Following the aeration phase, the sand and gravel column was filtered to remove manganese (II) from the water. The removal efficiency of Mn was obtained at a rate of 74.8- 84.5% and more than 95% after two hours of aeration and 1 hour at pH 8 for real samples.</p> Abdoulkadri Ayouba Mahamane, Corresponding Author,, Boubié Guel, Paul-Louis Fabre (Author) ##submission.copyrightStatement## Thu, 28 Dec 2023 00:00:00 +0000 Removal of ethylene bisdithiocarbamate fungicides in wastewater and agricultural runoff by zinc oxide nanoparticles before analysis by HPLC and UV-Vis spectroscopy <p>This study developed an applied method based on the degradation to remove <em>ethylene bisdithiocarbamate</em> (EBDC) fungicides from wastewater and agricultural runoff by zinc oxide nanoparticles (ZnONPs). The synthesized ZnONPs were characterized using XRD for material crystallinity, <em>scanning electron microscope</em> (SEM) and particle size analysis (PSA) for surface structure, morphology and particle size (nm), respectively. The energy-dispersive X-ray&nbsp;<em>spectroscopy</em>&nbsp; (EDX) spectra confirmed the presence of zinc and showed that the synthesized zinc oxide nanoparticles were pure. Determination of the adsorption and photocatalytic degradation of Mancozeb (MCZ) fungicides based on ZnONPs was performed. Different amounts of ZnONPs were loaded into an MCZ fungicide solution in different concentrations. High-performance liquid chromatography (HPLC) and UV-Vis spectroscopy were used to determine the dithiocarbamate residue and the degradation efficiency of the synthesized particles. The particle size distribution of the synthesized ZnONPs was found to be in the range of 50-95 nm. At optimum conditions, with a ZnONPs dosage of 10 mg, (MCZ) fungicide concentration of 9.37 mg L<sup>-1</sup>, and a duration of 60 minutes, the degradation efficiency was surpassed at more than 95%. Additionally, the nanoparticles demonstrated excellent reusability and maintained efficient activity for up to three cycles.&nbsp;</p> Mahadi Danjuma Sani, (corresponding ), Nagendra Kumar V. D. Abbaraju, Venugopal V. S. Nutulapati, Nura Kura Umar (Author) ##submission.copyrightStatement## Sat, 30 Dec 2023 00:00:00 +0000