Analytical Methods in Environmental Chemistry Journal 2022-12-30T00:00:00+00:00 Hamid Shirkhanloo Open Journal Systems <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> ZnO nanostructure synthesis for the photocatalytic degradation of azo dye methyl orange from aqueous solutions utilizing activated carbon 2022-12-17T22:48:50+00:00 Ahmed Jaber Ibrahim, Corresponding Author, <p>In this study, zinc acetate (as a precursor) and activated carbon carboxylic acid derivative were used to create the nanostructure of zinc oxide (ZnO) as a matrix. The carboxylic acid derivative was produced by modifying the oxidized activated carbon with nitric acid (AC-COOH). The modified activated carbon's surface was then impregnated with zinc to load it. By using BET, XRD, and SEM to characterize the ZnO nanostructure, it was discovered that it was composed of nanoparticles with a surface area capacity of 17.78 m<sup>2</sup> g<sup>-1</sup> and a size range of 21–31 nm. The photocatalytic hydrolysis of the dye methyl orange in an aqueous medium served as a test case for the catalyst's performance. The primary variables were considered, including pH, catalyst dose, stirring effect, and starting dye concentration. Measurements of activity below UV light revealed satisfactory outcomes for photocatalytic hydrolysis of the methyl orange (MO). In addition, the efficiency of the methyl orange (MO) photolysis catalyst prepared with unmodified activated carbon was also evaluated. The outcomes proved that zinc oxide (ZnO), made using a derivative carboxylic acid of activated carbon molecules by a matrix, had more good photocatalytic action than zinc oxide (ZnO) made by the real activated carbon matrix.</p> 2022-12-29T00:00:00+00:00 ##submission.copyrightStatement## Preparation of chitosan films plasticized by lauric and maleic acids 2022-12-19T03:11:59+00:00 Sara H Mutasher Hadi Salman Al-Lami, Corresponding Author, <p>The energy crisis and environmental concerns have increased interest in natural polymers, and the bio-sourced materials field is experiencing rapid growth. A useful alternative to conventional plastic packaging manufactured from fossil fuels is packaging constructed of biodegradable polymers. Consideration has been given to the instrumental methods for examining modifications to the chemical composition and characteristics of modified chitosan. The molecular weight and the kind of plasticizer present in these materials are the two primary variables influencing their usability and performance. This study set out to physically blend chitosan with two different acids, lauric and maleic, to enhance chitosan cast films' physical and mechanical properties. Different plasticizer ratios appeared to have little effect on the various properties of the chitosan cast films. Examining the obtained films by FTIR implies that chitosan's native structure was unchanged. The films prepared had more flexibility and better solubility than those made with un-plasticized chitosan. It was evident from an analysis of the mechanical properties of the films that both acid plasticizers enhanced the mechanical properties of the chitosan.</p> 2022-12-29T00:00:00+00:00 ##submission.copyrightStatement## In-vitro evaluation of photoprotection, cytotoxicity and phototoxicity of aqueous extracts of Cuscuta campestris and Rosa damascene by MTT method and UV spectroscopy analysis 2022-12-19T03:48:35+00:00 Payam Khazaeli Atefeh Ameri Mitra Mehrabani Morteza Barazvan Marzieh Sajadi ‎Bami Behzad Behnam, Corresponding Author, <p>Applying sunscreen is essential for protecting the skin from UV’s acute and chronic effects. Some of these products on the market display side effects and are expensive. There is a great demand for effective, cheap, safe, and herbal sunscreens with a wide range of sun protection activities. This study aimed to evaluate the photoprotection, cytotoxicity, and phototoxicity of aqueous extracts of <em>Cuscuta campestris</em> (CC-AE) and <em>Rosa damascena </em>(RD-AE). The maceration method prepared the CC-AE and RD-AE from the aerial branch. In-vitro photoprotection was evaluated by determining the sun protective factor (SPF) of CC-AE and RD-AE by a UV-visible spectrophotometer. The cytotoxicity and phototoxicity studies were assessed using the MTT assay on 3T3 cells. In the final, the PIF (Photo Inhibitor Factor) was calculated. The SPF values of CC-AE and RD-AE were found at 11.10±0.05 and 1.36±0.04, respectively, at the concentration of 0.2 mg mL<sup>-1</sup>. The half maximal effective concentration <strong>(</strong>EC<sub>50</sub>) of CC-AE and RD-AE was obtained at 35.05±0.91 µg mL<sup>-1 </sup>and 40.7±0.87 µg mL<sup>-1</sup>, respectively. The phototoxicity analysis showed that CC-AE and RD-AE had low PIF values and were considered probable phototoxic. Overall, regarding SPF and PIFs values, the anti-inflammatory and antioxidant properties, can be evaluated for further pharmaceutical formulations.</p> 2022-12-30T00:00:00+00:00 ##submission.copyrightStatement## Evaluating the effect of ethanol foliar feeding on the essential oil, phenolic content, and antioxidant activities of Ducrosia anethifolia 2022-12-19T05:03:08+00:00 Aliyeh Sarabandi Amirhossein Sahebkar Javad Asili Moharam Valizadeh Khalilollah Taheri Jafar Valizadeh, Corresponding Author, Maryam Akaberi, Corresponding Author, <p><em>Ducrosia anethifolia</em>&nbsp;(Apiaceae) is a medicinal aromatic plant distributed in Iran and Afghanistan. This research aims to investigate the composition of the plant essential oil, determine the total flavonoid and phenolic contents, and evaluate its antioxidant activities after ethanol foliar feeding. For this purpose, 0, 10, 20, 40, and 80% v/v of aqueous ethanol solutions were sprayed on different batches of the plants. Then, the essential oils were obtained using water distillation. Compounds were analyzed by Gas chromatography-mass spectrometry technique(GC-MS) using a validated method. The method was validated as per the ICH guidelines for linearity, precision, accuracy, robustness, LOD, and LOQ. The total contents of phenols and flavonoids were measured using spectrophotometric methods. The antioxidant activity was evaluated using DPPH and FRAP assays. The results showed that <em>n</em>-decanal, cis-verbenyl acetate and dodecanal were the major compounds in all treatments. However, alcohol could cause significant differences in the essential oils qualitatively and quantitatively. The results showed that 40% ethanol could increase the number of phenolics and flavonoids and consequently the antioxidant activity.&nbsp; Thus, ethanol foliar feeding can be used as an appropriate approach to increase the essential oil of <em>D. anethifolia</em> as well as its phenolic and flavonoid contents.</p> 2022-12-28T00:00:00+00:00 ##submission.copyrightStatement## Determination of tetrafluoroborate in wastewaters by ion chromatography after ion pair liquid-liquid dispersive microextraction 2022-12-19T06:23:23+00:00 Roman G. Sirotkin, Corresponding Author, Elena V. Elipasheva Alexander V. Knyazev Viktoria A. Bobrova <p>The ion chromatographic method was developed to determine tetrafluoroborate ion (BF<sub>4</sub><sup>-</sup>) in different types of water using ion pair liquid-liquid dispersive microextraction. Tetrafluoroborate was extracted into an organic phase (1,2-dichloroethane) as an ion pair with a tetrabutylammonium cation (TBA<sup>+</sup>). The most complete formation of [(ТBА<sup>+</sup>)(BF<sub>4</sub><sup>-</sup>)] was observed at ion-pair reagent concentration of at least 5 mmol L<sup>-1</sup> (C(BF<sub>4</sub><sup>-</sup>) ≤ 1mg L<sup>-1</sup>). Ultrasonic irradiation was used to disperse the extractant. The achieved concentration factor (K) was 29±3, and the degree of extraction (R) was 50±5%. The limit of detection of tetrafluoroborate using the microextraction technique was 7×10<sup>-3</sup> mg L<sup>-1</sup>. The method applies to the analysis of different water origins. The presence of the main contained anions does not interfere with the microextraction and chromatographic determination of tetrafluoroborate. The maximum molar ratio of BF<sub>4</sub><sup>-</sup> to diverse ions is 1:10<sup>4</sup> for fluoride, chloride, bromide,&nbsp; nitrate ions, and 1:10<sup>2</sup> for sulfate and perchlorate ions.</p> <p>&nbsp;</p> 2022-12-29T00:00:00+00:00 ##submission.copyrightStatement## Photocatalytic degradation of methyl orange using Cerium doped zinc oxide nanoparticles supported bentonite clay 2022-12-20T22:32:58+00:00 Safoora Javan Mohammad Reza Rezaei Kahkha Fahimeh Moghaddam Mohsen Faghihi-Zarandi Anahita Hejazi <p>Methyl orange (MO) is a common anionic azo dye that is a serious harmful pollutant to the environmental aquatic systems, so it must be treated before it can be discharged. Photocatalysts are usually semiconducting solid oxides that create an electron-hole pair by absorbing photons. These electron holes can react with molecules on the surface of the particles. Photocatalysts are used in water purification, self-cleaning glasses, the decomposition of organic molecules, etc. Photocatalysts are environmental cleaning materials that remove pollution from surfaces and can destroy organic compounds when exposed to sunlight or fluorescence. The photocatalytic process follows the following principles. Bentonite mineral is a natural adsorbent material that has good adsorption capacity. In this work, zinc oxide nanoparticles doped with cerium were prepared by the sol-gel method (SGM) and deposited on bentonite clay to degrade MO dye. Important parameters that affected degradation efficiency such as contact time, amount of nanocatalyst, and initial dye concentration were investigated and optimized. Results showed that 100% degradation efficiency was obtained at 60 mg of nanocatalyst and 50 mg L<sup>-1 </sup>of methyl orange in 120 minutes. The Kinetics of the degradation process was consistent with pseudo-second-order and the adsorption isotherm was fitted with the Langmuir model.&nbsp;</p> 2022-12-30T00:00:00+00:00 ##submission.copyrightStatement## Review Article: Development of biodegradable films using nanocellulose for food packaging application 2022-12-17T23:08:39+00:00 Asha Valsalan, Corresponding Author, Paramasivan Sivaranjana <p>Due to the development of nanotechnology and changing customer demands for food safety and hygiene, the food packaging industry is growing significantly. In today's worldwide market, active packaging offers a number of advantages over traditional wrapping because of its capacity to absorb or release substances to improve the shelf life of food. Traditional food packaging materials are difficult to recycle and are made from nonrenewable fossil fuels. The development of biodegradable films using Nano cellulose can be a good replacement for synthetic plastic packaging materials and can be a good solution for this problem. Other than that it has multiple advantages regarding tensile and physical properties, also as reducing health hazards. Tensile and physical characteristics are improved and water vapor permeability is decreased with the addition of cellulose nanoparticles to the biodegradable films/biodegradable composite films. The production of biodegradable materials employing Nano cellulose has been covered in this review study in four different ways, including extracts from agricultural waste, rice husk, various plant extracts, and biopolymer composite material in food packaging. The reason for using Nano cellulose-based biodegradable films in food packaging is also reviewed in this article.&nbsp;The key points for future research related to Nanocellulose&nbsp;and biodegradable films.&nbsp;</p> 2022-12-30T00:00:00+00:00 ##submission.copyrightStatement##