Acta Chimica Slovenica最新文献

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IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-09-20

引用次数: 0

Synthesis of (E)-3-{[2-oxo-5-arylfuran-3(2H)-ylidene]methyl}-4H-1-benzopyran-4-ones, crystal structure, quantum chemical substantiation. (E)-3-{[2-氧代-5-芳基呋喃-3(2H)-亚基]甲基}-4H-1-苯并吡喃-4-酮的合成、晶体结构和量子化学证据。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-09-12 DOI: 10.17344/acsi.2024.8791

Ekaterina Arzyamova, Olga Mazhukina, Alevtina Yegorova

引用次数: 0

Extraction System for the Spectrophotometric Determination of Tungsten(VI) with 4-Nitrocatechol and Benzalkonium Chloride. 用 4-硝基邻苯二酚和苯扎氯铵分光光度法测定钨(VI)的萃取系统。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-09-10 DOI: 10.17344/acsi.2024.8835

Vidka Vassileva Divarova, Kirila Trifonova Stojnova, Ivelina Dobromirova Radkovska, Antoaneta Dimitrova Saravanska, Galya Kostadinova Toncheva, Vassil Borisov Delchev, Kiril Blazhev Gavazov

{"title":"Extraction System for the Spectrophotometric Determination of Tungsten(VI) with 4-Nitrocatechol and Benzalkonium Chloride.","authors":"Vidka Vassileva Divarova, Kirila Trifonova Stojnova, Ivelina Dobromirova Radkovska, Antoaneta Dimitrova Saravanska, Galya Kostadinova Toncheva, Vassil Borisov Delchev, Kiril Blazhev Gavazov","doi":"10.17344/acsi.2024.8835","DOIUrl":"https://doi.org/10.17344/acsi.2024.8835","url":null,"abstract":"A novel chromogenic system for the liquid-liquid extraction and determination of trace amounts of tungsten(VI) was investigated. The system comprises 4-nitrocatechol (4NC) as a chromogenic reagent, sulfuric acid as a complexing medium, and benzalkonium chloride (BAC) as a source of bulky cations (BA+), which readily form chloroform-extractable ion-association complexes. The impact of foreign ions and reagents was studied, and the optimal conditions for the sensitive, selective, and inexpensive determination of tungsten(VI) were identified. The limit of detection, linear working range, and molar absorptivity at lmax (422 nm) were determined to be 31 ng cm-3, 0.1-4.4 µg cm-3, and 5.49 × 104 dm3 mol-1 cm-1, respectively. The composition of the extracted complex was 1:2:2 (W:4NC:BA). Two potential structures of its anionic component, [WO2(4NC)2]2-, were discussed based on optimizations at the B3LYP/CEP-4G theoretical level and comparison between theoretical and experimental spectra.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 3","pages":"519-527"},"PeriodicalIF":1.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthetic Optimization and Antibacterial Activity of Novel Benzodioxepine-Biphenyl Amide Derivatives. 新型苯并二氧杂环庚烷-联苯酰胺衍生物的合成优化和抗菌活性。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-31 DOI: 10.17344/acsi.2024.8784

Shao-Peng Yan, Zhi-Yu Zhu, Qi-Ke Jia, Rui-Ying Ji, Ya-Pin Wang, Dan He, Rong Wang, Yang Zhou

引用次数: 0

Phytochemical Analysis and Evaluation of the Antioxidant, Anti-Inflammatory, Hemolytic, and Antibacterial Effects of Astragalus gombo (L.) Leaves. 黄芪（L.）叶的植物化学分析及抗氧化、抗炎、溶血和抗菌效果评估

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-27 DOI: 10.17344/acsi.2024.8748

Mohammed Laid Tlili, Ibtissam Laib, Khadidja Salemi, Imane Chetehouna, Ines Ben Moussa

{"title":"Phytochemical Analysis and Evaluation of the Antioxidant, Anti-Inflammatory, Hemolytic, and Antibacterial Effects of Astragalus gombo (L.) Leaves.","authors":"Mohammed Laid Tlili, Ibtissam Laib, Khadidja Salemi, Imane Chetehouna, Ines Ben Moussa","doi":"10.17344/acsi.2024.8748","DOIUrl":"https://doi.org/10.17344/acsi.2024.8748","url":null,"abstract":"The purpose of this study is to determine the phytochemical content and biological activities of the Astragalus gombo (endemic specie). While identification and quantification of individual secondary metabolites were performed by analysis HPLC. Antioxidant (DPPH and FRAP), anti-inflammatory, anti-hemolytic and antibacterial activities were evaluated. For analysis HPLC, we obtained 65 peaks and identified 6 major bioactive compounds. The total concentration in polyphenols, flavonoids and condensed tannins varied respectively from 66.306±0.88 mg GA eq/g, 34.312±1.4 mg Q eq/g and 5.343±2.74 mg Ca eq/g. In terms of antioxidant activity, we found that this extract had high inhibitory ratios equivalent to IC50=62.813±0.006 µg/mL for DPPH and IC50=19.375±0.041 µg/mL for FRAP. A high anti-inflammatory activity was estimated at 1615.81µg/mL, and a weak anti-hemolytic activity, the other hand the antibacterial activity is somewhat moderate against the five strains studied. This study demonstrated that the aqueous extract of A. gombo from El Oued region has tremendous antioxidant, anti-inflammatory and antibacterial abilities.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 3","pages":"492-499"},"PeriodicalIF":1.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Validation of high-resolution continuum source flame atomic absorption spectrometry for determination of selected toxic and potential toxic metals in the decontamination process of wastewater discharged in natural receivers. 验证高分辨率连续源火焰原子吸收光谱法测定天然接收器中排放的废水净化过程中的特定有毒和潜在有毒金属。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-27 DOI: 10.17344/acsi.2023.8534

Bame Sanah Senna, Wellington Masamba, Veronica Obuseng, Tiberiu Frentiu, Bogdan Simion Angyus, Eniko Covaci

{"title":"Validation of high-resolution continuum source flame atomic absorption spectrometry for determination of selected toxic and potential toxic metals in the decontamination process of wastewater discharged in natural receivers.","authors":"Bame Sanah Senna, Wellington Masamba, Veronica Obuseng, Tiberiu Frentiu, Bogdan Simion Angyus, Eniko Covaci","doi":"10.17344/acsi.2023.8534","DOIUrl":"https://doi.org/10.17344/acsi.2023.8534","url":null,"abstract":"A new method based on high-resolution continuum source flame atomic absorption spectrometry (HR-CS-FAAS) was validated for the determination of selected toxic and potentially toxic metals in wastewater resulting from mining activity. The results were compared with inductively coupled plasma optical emission spectrometry (ICP-OES). The HR-CS-FAAS method was characterized by detection limits in the range (µg L-1) 0.9(Mn)-33.6(Pb), better than ICP-OES for Cu, Fe, Ni, Co, Pb and Mn, and poorer for Cd, Zn and Cr. The Dunnett's and Tukey's statistical test showed that both methods were not affected by significant bias against certified value and between them. The recovery in HR-CS-FAAS method was in the range of 98-103% with relative extended uncertainty of 9-25%, and precision of 1.5-14.1%. The results indicated that the HR-CS-FAAS method is suitable for the determination of toxic and potentially toxic elements directly in filtered water samples without any chemical treatment.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 3","pages":"500-508"},"PeriodicalIF":1.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of eutectics of pioglitazone with citric acid and its effect on crystallite properties and dissolution. 吡格列酮与柠檬酸共晶的开发及其对结晶特性和溶解的影响

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-27 DOI: 10.17344/acsi.2024.8793

Mouli Das, Shibashis Panigrahy, Rasmita Dash, Rudra Narayan Sahoo, Rakesh Swain, Souvik Nandi, Sk Habibullah, Tanisha Das, Subrata Mallick

引用次数: 0

Synthesis, characterization and DFT study of Ti(IV) phthalocyanines with quinoline groups. 带有喹啉基团的 Ti(IV) 酞菁的合成、表征和 DFT 研究。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-21 DOI: 10.17344/acsi.2024.8813

Seyda Aydogdu, Oznur Dulger Kutlu, Ali Erdogmus, Arzu Hatipoglu

引用次数: 0

Exploring Teachers' Technological Pedagogical Content Knowledge as an Indicator for the Planning of In-service Teacher Training in Chemistry Education. 探索将教师的技术教学内容知识作为规划化学教育在职教师培训的指标。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-21 DOI: 10.17344/acsi.2024.8783

Mojca Orel, Cirila Peklaj, Vesna Ferk Savec

{"title":"Exploring Teachers' Technological Pedagogical Content Knowledge as an Indicator for the Planning of In-service Teacher Training in Chemistry Education.","authors":"Mojca Orel, Cirila Peklaj, Vesna Ferk Savec","doi":"10.17344/acsi.2024.8783","DOIUrl":"https://doi.org/10.17344/acsi.2024.8783","url":null,"abstract":"This study examined how teachers teaching chemistry at different levels of education perceive their levels of technological pedagogical content knowledge (TPACK) and examined the relationship of TPACK with age, gender, teaching at different levels of education, time spent teaching chemistry, and frequency of information and communication technology (ICT) use. The study involved 261 teachers, 246 women and 15 men, from all over Slovenia, who have been teaching chemistry for an average of 18 years at different levels of education, with an average age of 45 years. The results showed that teachers teaching chemistry content perceive a high level of TPACK. There is a statistically significant correlation between age, time spent teaching chemistry, and frequency of ICT use with the perceived level of technological pedagogical content knowledge. Younger teachers, those with less professional experience and teachers who use ICT more frequently rated their TPACK higher. Based on the results of the survey, guidelines for planning the in-service teacher training that would support the development of TPACK of teachers teaching chemistry content were developed.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 3","pages":"451-461"},"PeriodicalIF":1.2,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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 porous imidazole-based poly(ionic liquid) adsorbents and their toluene adsorption performance. 多孔咪唑基聚（离子液体）吸附剂的制备及其甲苯吸附性能。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-08-21 DOI: 10.17344/acsi.2024.8622

Fangwen Luo, Xujiao Tian, Xian Dong, Longchao Liang, Zhuo Chen

{"title":"Preparation of porous imidazole-based poly(ionic liquid) adsorbents and their toluene adsorption performance.","authors":"Fangwen Luo, Xujiao Tian, Xian Dong, Longchao Liang, Zhuo Chen","doi":"10.17344/acsi.2024.8622","DOIUrl":"https://doi.org/10.17344/acsi.2024.8622","url":null,"abstract":"Efficient, economical, and durable adsorbents are required to remove volatile organic compounds (VOCs) from air. Cross-linked polyvinylic ionic liquids (PVIC) with porous structures were synthesized by quaternizing 1-vinylimidazole (1VI) with 1-bromobutane to obtain 3-butyl-1-vinylimidazolium bromide (VIC), which was then co-polymerized with divinylbenzene (DVB) radicals. 1H NMR, 13C NMR, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and N2 adsorption-desorption isotherms were applied in characterizing the composites. Through modification of the polymer structure by adjustment of DVB concentration（the ratio of DVB concentration to VIC concentration was x: 1 (x=0.4, 0.6, 0.8, 1.0) and the product was named PVIC-s (s=2, 3, 4, 5)）, the optimal PVIC-4 pore structure was obtained, with a specific surface area and total pore volume of 192.5 m2 g-1 and 0.192 cm3 g-1, respectively. A toluene adsorption test verified the adsorption capacity. The adsorption behavior for VOCs, based on toluene, was investigated using adsorption breakthrough curves, adsorption kinetics, and isotherms. The adsorption process is well describing by the Bangham kinetic and Langmuir isotherm models. The dynamic adsorption of toluene followed the order PVIC-4 > PVIC-5 > PVIC-3 > PVIC-2. The optimum toluene adsorption by PVIC-4 was 264.4 mg g-1 as a result of its excellent pore structure. PVIC-4 also performed well in terms of recovery and has potential for the removal of VOCs from air.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 3","pages":"471-481"},"PeriodicalIF":1.2,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0