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) Thu, 30 Mar 2023 00:00:00 +0000 OJS 60 Adsorption behavior of Crys tal Violet dye in aqueous solution using Co+2 hectorite composite as adsorbent surface <p>This study focused on the adsorption behavior of the cationic Crystal<br>Violet (CV) dye from aqueous solutions using a Co<sup>+2</sup>‒hectorite<br>composite as an adsorbent surface. The initial and equilibrium CV dye<br>concentrations were determined using a UV-Vis spectrophotometer. The<br>results were discussed and presented for the impacts of pH, primary CV<br>dye concentration, composite dosage, and temperature. The optimum<br>conditions were found for eliminating Crys tal Violet dye from the<br>aqueous solution at a pH 4, ideal temperature 293 K, and 0.5 g L<sup>-1</sup><br>of composite dose. The pseudo-second-order kinetic, intraparticle<br>diffusion analyzed the tes ts’ data and film diffusion models. Each<br>model’s defining features have been identified, and these models were<br>in good agreement and in charge of regulating the adsorption reaction.<br>The adsorption operation was also thermodynamically examined to<br>determine thermodynamic variables such as Gibbs free energy (ΔGo),<br>entropy (ΔS<sup>o</sup>), activation energy <sub>(</sub>E<sub>a),</sub> and enthalpy (ΔH<sup>o</sup>). The negative<br>value of Gibbs free energy (ΔG<sup>o</sup>) and enthalpy (ΔH<sup>o</sup>) indicated that<br>the adsorption process was a spontaneous and exothermic reaction.<br>While the activation energy (E<sub>a</sub>) data which fell within the normal<br>range for physisorption, was showed at&nbsp; 22.434 kJ mol<sup>-1</sup>.&nbsp;<br>The physical adsorption occurs between&nbsp; CV dye and<br>&nbsp;adsorbent .</p> ahmed jaber ibrahim, Corresponding Author, (Author) ##submission.copyrightStatement## Thu, 30 Mar 2023 00:00:00 +0000 Preparation of recycled poly s tyrene derivatives to remove heavy metal ions from contaminated water <p>In recent years, numerous researchers have concentrated on the process of turning waste into usable materials. Polystyrene and its modifications have received great attention over the past few decades due to their outstanding ion exchange behavior toward various toxic heavy metals in aqueous solutions. Therefore, this study is concerned with the preparation of three different cationic polymeric resins for the removal of Pb<sup>2+</sup>, Cd<sup>2+</sup>, and Fe<sup>3+</sup> heavy metal ions from their contaminated water samples based on the sulfonated single-used polystyrene teacup waste (SPS), which was used to prepare sulfonated polystyrene-g-acrylamide monomer (SPS-g-Acryl) and sulfonated polystyrene-g-chitosan (SPS-g-Chit) using commercial chitosan (DD=85%) originally extracted from shrimp cortex. The concentrations of the selected heavy metal ions were measured before and after each experiment with a flame atomic absorption spectrometer (F-AAS). The analytical studies started by exploring the influence of pH (2, 4, 6, and 8) on removing the heavy metal ions Pb<sup>2+</sup>, Cd<sup>2</sup>+, and Fe<sup>3+</sup> from their aqueous solutions. The obtained results revealed that as the pH of the analyzed ion solution is increased, the removal efficiency for ions increases. All three resins (SPS, SPS-g-Acryl, and SPS-g-Chit) had different removal efficiencies for the investigated ions, with SPS-g-Chit resin.</p> Hadi Salman Al-Lami, Corresponding Author,, Hussein A. Al-Mosawi, Nadhum A. Awad (Author) ##submission.copyrightStatement## Thu, 30 Mar 2023 00:00:00 +0000 Study of the behavior and determination of phenol Based on modified carbon pa s te electrode with nickel oxide-nitrogen carbon quantum dots using cyclic voltammetry <p>The behavior of phenol was studied and determined using the modified carbon paste electrode (<em>MCPE</em>) with nickel oxide nanoparticles doped by nitrogen carbon quantum dots as nanoadsorbent (NiO - NCQD) and cyclic voltammetry (CV). The MCP electrode was manufactured in a laboratory. The modified carbon paste consisted of 12% (NiO-NCQD), ­ 44% of graphite powder and 44% of paraffin oil to get a modified carbonate paste. Cyclic voltammetry can provide behavior information; as such: diffusion coefficient (D), charge transfer coefficient (α.n<sub>α</sub>), the mass transport (m<sub>trans</sub>) &nbsp;found that diffusion coefficient, the reduction of mass transport (m<sub>trans</sub>) by increasing the phenol concentration in the solution, and increasing of constant K<sup>0</sup> when the concentration of phenol increased in the solution.&nbsp; Also, the highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO), and Gibbs free energy (ΔG) are studied and calculated. In this study, E<sub>HOMO</sub>=4.92eV, E<sub>LUMO</sub>=0.32eV, and ΔG=-4.17 were considered. The drinking water samples from Latakia city were analyzed based on NiO-NCQD adsorbent using the <em>MCPE</em> method (NiO-NCQD/MCPE). The phenol concentration in the drinking water sample in Latakia was achieved less than the quantitative detection limit (LOQ), and the proposed procedure was validated by spiking samples.</p> Khalil Ibrahim Alabid, Corresponding Author,, Hajar Naser Nasser (Author) ##submission.copyrightStatement## Wed, 29 Mar 2023 00:00:00 +0000 Chemical analysis of essential oils of Thymus Carmanicus Jalas by gas chromatography-mass spectrometry and toxicity activity agains t the major Iranian malaria vector, Anopheles Stephensi <p>In the last few years, using chemical insecticides to control the malaria vector has caused environmental pollution and resistance to chemical insecticides. This study aimed to investigate the chemical <a href="">analysis&nbsp;of&nbsp;essential oils&nbsp;of <em>Thymus carmanicus</em> Jalas by gas chromatography and mass spectrometry</a> (GC-MS) and toxicity activity&nbsp;against the major Iranian malaria vector,&nbsp;<em>Anopheles stephensi</em>. The essential oil of Thymus carmanicus Jalas was prepared from dried leaves using the hydro-distillation method. Gaschromatography-mass spectrometer (GC-MS) was used to analyze and identify thyme essential oil compounds. Bioassay was performed using World Health Organization (WHO) standard test. The <em>T. Carmanicus </em>Jalas essential oil consisted of 15 compounds, with Carvacrol (61%), Thymol (6%), and β-caryophyllene (5%) being the major components by volume. The LC<sub>50</sub> and LC<sub>90 </sub>of thyme oil were 20.37 and 41.38 ppm at 24h after application, respectively. At 24h after application, significant differences were observed between the toxicity of 5%, 20%, 25%, 40%, 50%, and 80% concentrations of Thyme essential oil (P&lt;0.05). The 80% concentration of Thyme essential oil exhibited 100% toxicity against <em>A.stephensi</em> larvae at 24h after application. <em>T. Carmanicus</em> has a rich source of bioactive compounds for use as a mosquito larvicide.</p> Nazanin Sadat Mousavi, Alireza Sanei-Dehkordi, Ismaeil Alizadeh, Ali Faghihi Zarandi, Mohsen Mehdipour Rabori, Nasrollah Saberi, Mohammad Amin Gorouhi (Author) ##submission.copyrightStatement## Tue, 28 Mar 2023 00:00:00 +0000 Artificial Neural Network and Response Surface Design for Modeling the Competitive Biosorption of Pentachlorophenol and 2,4,6-Trichlorophenol to Canna indica L. in Aquaponia <p>The continuous exposure of the environment to carcinogenic wastes and toxic chlorophenols such as pentachlorophenol (PCP) and 2,4,6-trichlorophenol (TCP) resulting from industrial production activities is become a great concern. The search for cost efficient and ecofriendly approach to phytoremediation of water will guarantee sustainability. The present research work is concerned with cost benefit evaluation, and the optimization modeling of the competitive biosorption of PCP and TCP from aqueous solution to Cana indica. L (CiL-plant) using response surface methodology (RSM) and artificial neural network (ANN) model. The predictive performances of the ANN model and the RSM were compared based on their statistical metrics. The antagonistic and synergetic effect of significant biosorption variables (pH, initial concentration, and exposure time) on the biosorption process were studied at p-values ≤0.005. The optimized output transcends to PCP and TCP removal rates of 90% and 87.99% efficiencies at predicted r-squared ≤0.9999, at 95% confidence interval. The cost benefit evaluation established that at the optimum conditions, the cost of operating the removal of TCP from aqueous solution will save $ 7.72 compared to PCP. The reliability of the optimization model based on design of experiment was proven to be more sustainable compared to the one-factor-at-a-time methodologies.</p> Enyoh Christian Ebere, Corresponding Author,, Prosper Ovuoraye, Obinna Isiuku, Chinenye Adaobi Igwegbe (Author) ##submission.copyrightStatement## Thu, 30 Mar 2023 00:00:00 +0000 Determination and analysis of pesticide residues in fieldgrown and greenhouse-grown tomatoes using liquid chromatography-mass spectrometry <p>The present study aimed to extract pesticide residues in the field and greenhouse-grown tomatoes and homemade paste based on the &nbsp;(<em>QuEChERS</em>) method before being determined by liquid chromatography-mass spectrometry (LC-MS). The mean difference in percentage reduction of deltamethrin (DLM) and acetamiprid (ACT) in raw tomatoes of greenhouse-grown was obtained at 91.42 and 90.00%, respectively, which was insignificantly more than filed condition (84.91% and 86.34%). Maximum reduction percentages of the DLM in paste under greenhouse and field tomato conditions were achieved by more than 95.86% and 93.11%, respectively. The residual concentration of both DLM (91.42%) and ACT (90.00%) in the greenhouse decreased more than the field (84.91% and 86.34%), respectively. Abamectin(ABA) reached below the MRL in a shorter time after spraying (2 days). Considering the pre-harvest interval (PHI) period of deltamethrin and abamectin can reach their residual concentration to the MRL in both conditions, which were determined by LC-MS. According to the results of the current study, 7 and 5 days can be suggested as the PHI period of the acetamiprid for field and greenhouse-grown tomatoes, respectively. Therefore, using pesticides in the proper dosage, considering appropriate PHI, and harvesting can reduce their residues in agricultural products.</p> Fatemeh Norouzi, Maryam Faraji, Corresponding Author,, Ramezan Sadeghi, Ali Faghihi-Zarandi, Farshid Shabani Boroujeni (Author) ##submission.copyrightStatement## Wed, 29 Mar 2023 00:00:00 +0000 Colorimetric and Fluorometric detection of arsenic: arsenate and arsenite <p>Arsenic is a highly toxic metalloid that forms different chemical states in nature, including arsenate and arsenite, as common inorganic forms. Exposure to arsenic may cause adverse effects on human health and the environment. Therefore, the detection of arsenic is critical. Exploring new approaches with low detection ranges and high sensitivity is crucial. This review paper consists of optical methods, including colorimetric and fluorometric methods, which detect arsenite and arsenate. Initially proposed colorimetric approaches such as the Gutzeit and molybdenum blue method can easily to use. However, the production of toxic substances limits their applications. Later, structurally modified molecules, nanoparticle-based assays, and their modifications are used for arsenic detection. Fluorometric methods also have noticeable attention to arsenic detection. Fluorescent approaches reported in this paper are based on semiconductor nanomaterials, other nanomaterials, and their modifications, etc. In addition, arsenate's catalytic and inhibitory activity on enzyme activity can be used to detect arsenic through colorimetric and fluorometric methods. This review highlighted the advantages, disadvantages, comparisons, and uses of colorimetric and fluorometric methods in detecting arsenite and arsenate.</p> Madhawa Nawarathne, Ruvini Weerasinghe, Chathuranga Dharmarathne, Corresponding Author, (Author) ##submission.copyrightStatement## Tue, 28 Mar 2023 00:00:00 +0000