Journal of the Turkish Chemical Society Section A: Chemistry最新文献

Microdetermination of Piroxicam in Pharmaceutical Formulations by Complexation with Fe(III) and Image Scanning Densitometry 通过与铁（III）络合和图像扫描密度计微量测定药物制剂中的吡罗昔康

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-07-03 DOI: 10.18596/jotcsa.1391053

Jamıl Anwar, A. Dar, Ramna Mumtaz, J. Anzano, Ayesha Mohyuddin

{"title":"Microdetermination of Piroxicam in Pharmaceutical Formulations by Complexation with Fe(III) and Image Scanning Densitometry","authors":"Jamıl Anwar, A. Dar, Ramna Mumtaz, J. Anzano, Ayesha Mohyuddin","doi":"10.18596/jotcsa.1391053","DOIUrl":"https://doi.org/10.18596/jotcsa.1391053","url":null,"abstract":"Piroxicam is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain or inflammation due to osteoarthritis or rheumatoid arthritis. Assay of piroxicam in pharmaceutical formulations can be performed by using a number of analytical techniques. This work estimates the drug in commercial samples using a novel method, Computational Image Scanning Densitometry (CISD). Micro-volumes of the aqueous solution of piroxicam were reacted with iron(III) sulfate solution under optimum conditions on a white Teflon well plate to form a pink-colored mononuclear complex. By using a smartphone, the picture of the colored complex in the well plate was taken and transferred to an attached computer. The overall optical density resulting from red, green, and blue (RGB) components from a specific area of the colored image was measured and digitalized with the help of custom-made software. A standard curve was prepared by plotting optical density against piroxicam concentration. The method was simple, fast, adequately precise, and accurate for the assay of the drug in commercial samples. The validity of the new method was checked by comparing the results with those obtained by a standard spectrophotometric method of Piroxicam estimation.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"54 s54","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141837826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New Generation Nanoadsorbents and Conventional Techniques for Arsenic Removal from Waters 新一代纳米吸附剂和传统技术去除水中的砷

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-03-03 DOI: 10.18596/jotcsa.1438869

Veyis Karakoç, Erol Erçağ

{"title":"New Generation Nanoadsorbents and Conventional Techniques for Arsenic Removal from Waters","authors":"Veyis Karakoç, Erol Erçağ","doi":"10.18596/jotcsa.1438869","DOIUrl":"https://doi.org/10.18596/jotcsa.1438869","url":null,"abstract":"Nowadays, with excessive use due to rapid population growth, growing industry, and technological developments, environmental pollution is also increasing and is reaching a point where it threatens the health of humans. The alarming increase in environmental pollution is mostly seen in the form of water pollution. Water pollution has reached levels that threaten human health. There are difficulties in accessing clean water in many parts of the world as a result of restricting the use of natural water resources polluted by both human activities and natural causes. Therefore, intense efforts are made to remove especially heavy metals and other harmful substances that pollute water. Among these toxic heavy metals threatening the health of humans, arsenic is at the top of the list as the most dangerous one. In recent years, many methods and techniques have been developed in addition to classical methods for removing pollutants from water. In this study, conventional methods used in the treatment of arsenic-contaminated waters, the difficulties encountered in the removal process, and the advantages and disadvantages of the methods were critically reviewed in the light of current and past information. In addition, detailed comparative information is given about nano-sized adsorbents, which is an innovative approach used in the adsorption method, one of the arsenic removal methods.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Biogas Production with The Addition of Nano-catalysts 添加纳米催化剂提高沼气产量

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-02-18 DOI: 10.18596/jotcsa.1368040

Fatih Emen, Aslıhan CESUR TURGUT, Şevkinaz Doğan

引用次数: 0

Degradation of Tolonium Chloride Dye by Phosphate Ion in Aqueous Acidic Solution: Kinetic Approach 酸性水溶液中磷酸盐离子对氯化钋染料的降解作用：动力学方法

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-02-14 DOI: 10.18596/jotcsa.1362644

P. Umoru, Mohammad Lawal, O. A. Babatunde, Yusuf Sahabi

{"title":"Degradation of Tolonium Chloride Dye by Phosphate Ion in Aqueous Acidic Solution: Kinetic Approach","authors":"P. Umoru, Mohammad Lawal, O. A. Babatunde, Yusuf Sahabi","doi":"10.18596/jotcsa.1362644","DOIUrl":"https://doi.org/10.18596/jotcsa.1362644","url":null,"abstract":"The degradation of tolonium chloride (TC+) dye by phosphate ion (PO43-) in an aqueous acidic solution was studied using spectrophotometric analysis at 301 K, I= 1.0 M, [TC+]= 1.5 × 10-5 M, [H+]= 1.0×10-3 M, and ʎmax 600 nm. To determine the potency and rate of the reactant species, an aqueous acidic medium was employed. The reaction's direction and tendency were predicted using a thermodynamic analysis at an interval of 5.0 K and a temperature range of 301-321 K. Without the presence of intermediate complex/free atoms formation, a reaction that produced phenyl sulphoxide, phenylamine, and HPO32- as products of the reaction was obtained with a molar ratio of 1:1 for both reactants. First-order tolonium chloride reactivity was found in the reaction and first-order for the phosphate ion, resulting in a second-order reaction overall. The reaction process accelerated as the concentration of hydrochloric acid rose. The response time decreased with an increase in ionic strength concentration and added Ca2+ and Cl- did catalyze the reaction positively. A straight line that went through the origin was produced by plotting 1/ko vs PO43- concentration. The spectroscopic analysis showed no discernible shift from λmax of 600 nm. Additionally, an increase in temperature accelerated the reaction process. The reaction has a negative free energy change, G (-3.13–1.12 KJ/mol) which indicates that it is spontaneous and that the reactants have more free energy than that of the products. While the enthalpy of activation, H is positive and indicates that the reaction was endothermic and followed an associative path, the entropy of activation, S, is also negative (-7.45–1.10 KJ/mol), indicating that the reaction is less disordered. Due to the added ions catalysis and absence of free atoms during the course of the reaction, an outer-sphere mechanism was suggested for the reaction.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"171 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140457307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Poly (N-Isopropylacrylamide) -Poly (2-Ethyl-2-Oxazoline) and Their Self-Assembly Properties with Dicarboxylic Acid 聚（N-异丙基丙烯酰胺）-聚（2-乙基-2-噁唑啉）的制备及其与二羧酸的自组装特性

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-02-05 DOI: 10.18596/jotcsa.1150117

Perihan YİLMAZ ERDOGAN, F. Bilge Emre, T. Seçkin

{"title":"Preparation of Poly (N-Isopropylacrylamide) -Poly (2-Ethyl-2-Oxazoline) and Their Self-Assembly Properties with Dicarboxylic Acid","authors":"Perihan YİLMAZ ERDOGAN, F. Bilge Emre, T. Seçkin","doi":"10.18596/jotcsa.1150117","DOIUrl":"https://doi.org/10.18596/jotcsa.1150117","url":null,"abstract":"This study reports the synthesis of copolymers that contain thermally responsive polymers, namely poly(N-isopropylacrylamide) (PNIPAM) and poly(2-ethyl-2-oxazoline) (PEOX), as well as biodegradable side groups that are water-soluble and capable of hydrogen bonding. The assay aims to produce heat-responsive PNIPAM and PEOX polymers with di-carboxylic acid (DCA) controlled structuring of the resulting pH-sensitive nano-structured polymers. These will be used as a template in the synthesis of inorganic materials. The study demonstrated the impact of pH, salt concentration, and temperature on the polymer/DCA. This fragment describes the functional groups of the thermosensitive polymers PNIPAM and PEOX. These polymers have carboxylic acid functional groups at both ends, are water soluble, and are capable of hydrogen bonding. The structure of these polymers can be recognized with small molecules of DCA in an aqueous solution at different pH, salt concentrations, and temperatures with H-bonds. Additionally, these polymers can be used as templates to synthesize hollow silica polymers. The synthesized monomers and polymers were structurally characterized using Fourier transform infrared spectrophotometer (FT-IR). The resulting structured polymers were identified by scanning electron microscopy and atomic force microscopy (SEM, AFM). UV-VIS spectrophotometer and Differential Scanning Calorimetry (DSC) were used to determine the Lower Critical Solution temperature of the polymers.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"61 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140461739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biogenic Synthesis and Characterization of Gold Nanoparticles from Morus alba L. Leaves by Microwave Extraction Method 微波萃取法从桑叶中生物合成金纳米粒子并确定其特性

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-01-29 DOI: 10.18596/jotcsa.1372302

Gönül Serdar

{"title":"Biogenic Synthesis and Characterization of Gold Nanoparticles from Morus alba L. Leaves by Microwave Extraction Method","authors":"Gönül Serdar","doi":"10.18596/jotcsa.1372302","DOIUrl":"https://doi.org/10.18596/jotcsa.1372302","url":null,"abstract":"The aim of this study was to investigate the rapid, simple, and inexpensive biosynthesis and characterization of gold nanoparticles (AuNPs) an extract from leaves of Morus alba L. The generated gold nanoparticles were characterized by UV-Vis spectroscopy, TEM, FT-IR and zeta-sizer. For the biogenesis of gold nanoparticles, Morus alba L. (Mulberry) leaves and HAuCl4.3H2O solution were utilized as the starting ingredients. Fresh leaves of Morus alba L. were collected from Turkey (Trabzon). 100 mL of distilled water was mixed with 10 g of dried material for 120 minutes. The mixture was then extracted using a laboratory microwave for 4 minutes at 600 W. For the biosynthesis of AuNPs, different amounts 100 ml of (0.5 mM, 1 mM) aqueous HAuCl4.3H2O solution of leaf extract (0.5 and 1 mL) were mixed with HAuCl4. 3H2O solution, and then the mixture was placed in a household microwave at 90 W for 1 to 30 minutes. UV-vis spectroscopy, TEM, FT-IR and zeta-sizer were performed to characterize the produced gold nanoparticles. UV-Vis absorption spectra was measured using a Shimadzu UV-1240 UV-Vis spectrophotometer with a wave length range of 300 to 800 nm. The development of AuNPs was indicated by the mixture's purple-red colour. From the results of zetasizer study, the average particle size of the AuNPs was 78.95±0.57 nm, the zeta potential was 12.9±0.808 mV, and the polydispersity index was 0.321±0.004. When the AuNP solutions were kept in the refrigerator, their UV-Vis absorption spectra rarely changed and remained stable for around 2 to 2.5 months.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"65 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140486532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Review on Different Analytical Techniques for Quantification of Moxidectin 莫西菌素定量分析技术综述

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-01-29 DOI: 10.18596/jotcsa.1257065

Aarti Kommu, Raja Sundararajan

引用次数: 0

De novo Drug Design to Suppress Coronavirus RNA-Glycoprotein via PNA-Calcitonin 通过 PNA-Calcitonin 抑制冠状病毒 RNA 糖蛋白的全新药物设计

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-01-29 DOI: 10.18596/jotcsa.1406290

Soykan Agar, B. Akkurt, Levent Alparslan

引用次数: 0

Investigation of the Effects of Different H2SO4, HCI, HNO3 and HCIO4 Liquid Acid Media on the Synthesis of CdTe Semiconductor Thin Films for Solar Cells 不同 H2SO4、HCI、HNO3 和 HCIO4 液体酸介质对太阳能电池用碲化镉半导体薄膜合成的影响研究

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-01-24 DOI: 10.18596/jotcsa.1285341

Ayça KIYAK YILDIRIM, Veli Şimşek

{"title":"Investigation of the Effects of Different H2SO4, HCI, HNO3 and HCIO4 Liquid Acid Media on the Synthesis of CdTe Semiconductor Thin Films for Solar Cells","authors":"Ayça KIYAK YILDIRIM, Veli Şimşek","doi":"10.18596/jotcsa.1285341","DOIUrl":"https://doi.org/10.18596/jotcsa.1285341","url":null,"abstract":"The main target of the present paper is to investigate the effect of different acidic aqueous media(DAAM) on the synthesis of cadmium telluride thin films(CdTeTFm). The synthesis of CdTeTFm was carried out by the electrochemical deposition method(EDM) in DAAM. The chronoamperometry method of electrodeposition(ED) was used for the production of CdTeTFm. Furthermore, the electrochemical behaviors of the solutions were studied using cyclic voltammetry. The experiments were carried out with 3 electrodes (a working electrode (WE), a reference electrode(CE), and a counter electrode(RE)) using the electrochemical cell potentiostatic method. The experimental conditions of the acidic aqueous CdTe solution have been determined to be pH 3.56-3.57, the temperature of the solution is 85°C, the concentration of CdTe 2.45x10-1 M, and the reaction time is 25 minutes. The physical properties of CdTeTFm were determined by XRD, SEM/EDX, FT-IR, and UV-VIS analysis methods. According to the results of the analysis, it was observed that acidic aqueous media have an important role in the synthesis of CdTeTFm. The bandgap ranges and Cd/Te ratios of the synthesized thin films were obtained as 1.42, 1.48, 1.50, 1.58 eV, 0.65, 0.587, 0.79 and 0.738, respectively.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140497312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New Drug Design to Suppress Nonalcoholic Steatohepatitis 抑制非酒精性脂肪性肝炎的新药设计

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2024-01-23 DOI: 10.18596/jotcsa.1395403

Soykan Agar, B. Akkurt, E. Ulukaya

引用次数: 0