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Cryoforming of Individual Nanoforms of Chloramphenicol and Its Hybrid Nanocomposites with Silver Nanoparticles 氯霉素单纳米形态的低温成型及其与纳米银的杂化复合材料
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2026-04-03 DOI: 10.3103/S0027131425700464
A. V. Soloviev, A. K. Tomilov, Yu. N. Morozov, A. V. Shabatin, I. V. Astashova, T. I. Shabatina
{"title":"Cryoforming of Individual Nanoforms of Chloramphenicol and Its Hybrid Nanocomposites with Silver Nanoparticles","authors":"A. V. Soloviev,&nbsp;A. K. Tomilov,&nbsp;Yu. N. Morozov,&nbsp;A. V. Shabatin,&nbsp;I. V. Astashova,&nbsp;T. I. Shabatina","doi":"10.3103/S0027131425700464","DOIUrl":"10.3103/S0027131425700464","url":null,"abstract":"<p>Individual nanoparticles of the antibacterial drug chloramphenicol were obtained from the gas phase using the cryochemical condensation method. Carbon dioxide (СО<sub>2</sub>) was used as the carrier gas. According to the IR spectroscopic study, the chemical structure of chloramphenicol did not change during modification, however, the formation of a new polymorphic modification was possible. Hybrid chloramphenicol nanocomposites with silver nanoparticles were obtained by a similar method without the use of a carrier gas. According to the IR spectroscopy data, the chemical structure and crystalline form of chloramphenicol did not change as a result of modification but shifts in the vibrational bands of the molecular groups of chloramphenicol were observed due to the donor-acceptor interactions with the surface of dioxidine nanoparticles. According to the microscopic examination data, the size of chloramphenicol nanocomposites with silver was 112 ± 42 nm.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"81 1","pages":"26 - 30"},"PeriodicalIF":0.5,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588453","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
Crucible Electrothermal Atomizer with Cell-Channels for Analysis of Powder Samples 用于粉末样品分析的带有胞道的坩埚电热雾化器
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2026-04-03 DOI: 10.3103/S002713142570049X
V. N. Oreshkin, G. I. Tsizin
{"title":"Crucible Electrothermal Atomizer with Cell-Channels for Analysis of Powder Samples","authors":"V. N. Oreshkin,&nbsp;G. I. Tsizin","doi":"10.3103/S002713142570049X","DOIUrl":"10.3103/S002713142570049X","url":null,"abstract":"<p>We propose a design solution for a graphite crucible atomizer with cell-channel structures for direct atomic absorption analysis of powdered samples. The evaporation zone in the crucible incorporates a graphite block (container) with cell-channels to accommodate and separate measured portions of the powdered sample. This modification alters the conditions of thermal decomposition and evaporation of organomineral samples, reduces interferences, and lowers the detection limits of elements (Ag, Bi, Cd, Tl) in preconcentrates and natural water suspensions.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"81 1","pages":"46 - 51"},"PeriodicalIF":0.5,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588511","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
Plasma Treatment of Sewage Sludge 污水污泥的等离子体处理
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700427
K. A. Zhidomorova, D. I. Subbotin
{"title":"Plasma Treatment of Sewage Sludge","authors":"K. A. Zhidomorova,&nbsp;D. I. Subbotin","doi":"10.3103/S0027131425700427","DOIUrl":"10.3103/S0027131425700427","url":null,"abstract":"<p>This paper describes a method for plasma processing of ash obtained after the incineration of sewage sludge, based on the complete melting of the ash followed by its rapid cooling. The chemical composition of the vitrified slag formed as a result of plasma treatment is analyzed. It is noted that leaching with preliminary activation by grinding substantially decreases the concentration of metal oxides in the slag, which is an effective way to protect the environment.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"390 - 392"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665947","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
Green Synthesis of Metal Oxide Nanoparticles 金属氧化物纳米颗粒的绿色合成
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700385
T. I. Shabatina, A. Bose, O. I. Vernaya, Y. A. Gromova, M. Ya. Melnikov
{"title":"Green Synthesis of Metal Oxide Nanoparticles","authors":"T. I. Shabatina,&nbsp;A. Bose,&nbsp;O. I. Vernaya,&nbsp;Y. A. Gromova,&nbsp;M. Ya. Melnikov","doi":"10.3103/S0027131425700385","DOIUrl":"10.3103/S0027131425700385","url":null,"abstract":"<p>Rapid advancement of nanotechnology and the increasing demand for nanomaterials (including those of metal oxide nanoparticles (NPs)) require the development of cost-effective and environmentally friendly synthesis methods. Green chemistry and its synthesis methods are an effective solution to this challenge. They enable the production of metal oxide NPs of various compositions, structures, and sizes with minimal environmental impact. Diverse green synthesis methods and reagents allow for the selection of the most cost-effective options for various regions. Modern green chemistry methods to produce and stabilize metal oxide NPs of copper, zinc, zirconium, iron, and titanium are considered in this review. Their advantages, disadvantages, and potential future developments are discussed. The properties and practical applications of metal oxide NPs obtained with green chemistry methods are also described.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"349 - 365"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665868","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
Elemental Analysis of Thyme Herb 百里香的元素分析
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700440
N. N. Yashchenko, S. V. Zhitar, E. G. Zinovjeva, A. N. Lyshikov
{"title":"Elemental Analysis of Thyme Herb","authors":"N. N. Yashchenko,&nbsp;S. V. Zhitar,&nbsp;E. G. Zinovjeva,&nbsp;A. N. Lyshikov","doi":"10.3103/S0027131425700440","DOIUrl":"10.3103/S0027131425700440","url":null,"abstract":"<p>An elemental analysis of a thyme herb (<i>Thymus serpyllum</i> L.) that grows in the Chuvash Republic (Russia) is performed for the first time in this study with an X-ray fluorescence method. In the analyzed samples, among the 22 detected chemical elements, higher contents are found for potassium, calcium, phosphorus, silicon, and iron. The macroelements can be arranged in the following order (in mg/kg): K (12 410) &gt; Ca (8960) &gt; P (6000) &gt; S (1480) &gt; Cl (1280). The content of microelements in the thyme herb samples is as follows: Si (7590) &gt; Fe (350) &gt; Mn (80) &gt; Zn (30) &gt; Sr (20) &gt; Cu, Br (10). Titanium (40 mg/kg), rubidium, and chromium (10 mg/kg each) are found in the samples. Toxic elements (cadmium, lead, mercury, and arsenic), as well as silver, zirconium, and vanadium, are not detected in the samples. The elemental composition of Chuvash thyme is compared with samples from the Goris Region (Armenia) and medicinal plant materials manufactured by Fitofarm (Anapa, Russia) and Zdorovye (Moscow oblast, Russia). The absence of heavy toxic metals and arsenic together with the rich macro- and microelement composition of Chuvash thyme make it suitable to produce various preparations used in traditional and folk medicine, cosmetology, perfumery, cooking, and other industries.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"397 - 400"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665871","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
Silver Nanoparticles: Green Synthesis Using Medicinal Plant Extracts and Antibacterial Activity 银纳米粒子：利用药用植物提取物的绿色合成及其抗菌活性
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700397
A. S. Ryzhkova, A. A. Makeeva, O. I. Vernaya, A. V. Shabatin, A. M. Semenov, A. Bose, T. I. Shabatina
{"title":"Silver Nanoparticles: Green Synthesis Using Medicinal Plant Extracts and Antibacterial Activity","authors":"A. S. Ryzhkova,&nbsp;A. A. Makeeva,&nbsp;O. I. Vernaya,&nbsp;A. V. Shabatin,&nbsp;A. M. Semenov,&nbsp;A. Bose,&nbsp;T. I. Shabatina","doi":"10.3103/S0027131425700397","DOIUrl":"10.3103/S0027131425700397","url":null,"abstract":"<p>In this study, silver nanoparticles are synthesized using aqueous extracts of <i>Matricaria chamomilla</i> and <i>Calendula officinalis</i> flowers. The composition of the precursors, size, and morphology of the silver particles are determined using IR and UV spectroscopy, dynamic light scattering, and transmission electron microscopy. The resulting silver nanoparticle solutions are found to be active against <i>E. coli</i> and <i>S. aureus</i>.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"366 - 374"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665949","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
Determination of Sucralose in Combined Sweeteners on a Complexing Sorbent Using Hydrophilic Interaction Chromatography 用亲水相互作用色谱法测定复合甜味剂中的三氯蔗糖
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700415
A. Yu. Laptev, N. B. Rozhmanova, P. N. Nesterenko
{"title":"Determination of Sucralose in Combined Sweeteners on a Complexing Sorbent Using Hydrophilic Interaction Chromatography","authors":"A. Yu. Laptev,&nbsp;N. B. Rozhmanova,&nbsp;P. N. Nesterenko","doi":"10.3103/S0027131425700415","DOIUrl":"10.3103/S0027131425700415","url":null,"abstract":"<p>This article studies the development of a simple chromatographic analysis to determine the low concentration of sucralose in combined sweeteners. Using hydrophilic interaction liquid chromatography (HILIC) with a complex-forming sorbent based on silica gel modified with immobilized 2-hydroxyethyliminodiacetic acid (HEIDA) groups saturated with La<sup>3+</sup>, it is shown that low concentrations of sucralose can be determined in the presence of a 1000-fold excess of erythritol, due to its relative enrichment in acetonitrile. The best separation of sucralose and erythritol is achieved using a mixture of acetonitrile and water (95 : 5 vol %) as the mobile phase. The developed procedure for determining sucralose by HILIC using a refractometric detector is used to determine it in samples of erythritol-based combined sweeteners. The detection limit for sucralose is 28 μg/mL.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"384 - 389"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665870","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
Structure and Properties of Water–Ethanol Systems 水-乙醇体系的结构与性质
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700403
I. S. Ryzhkina, K. A. Muravtseva, I. S. Dokuchaeva, L. A. Kostina, L. I. Murtazina, M. Ya. Melnikov
{"title":"Structure and Properties of Water–Ethanol Systems","authors":"I. S. Ryzhkina,&nbsp;K. A. Muravtseva,&nbsp;I. S. Dokuchaeva,&nbsp;L. A. Kostina,&nbsp;L. I. Murtazina,&nbsp;M. Ya. Melnikov","doi":"10.3103/S0027131425700403","DOIUrl":"10.3103/S0027131425700403","url":null,"abstract":"<p>Self-organization, specific electrical conductivity, UV absorption spectra, and fluorescence of aqueous solutions of ethyl alcohol with a concentration of 100 to 1 vol % are studied. It is shown that as the alcohol concentration decreases structural rearrangements, accompanied by nonmonotonic changes in the nature, size of the formed particles, and their percentage content, occur in solutions. It is found that structures with a size of hundreds of nm and a negative ζ-potential (domains) reach the highest content in the range of 60–30 vol % alcohol. In this range of alcohol concentrations, a relationship between the nonmonotonic concentration changes in the size of domains, their ζ-potential, specific electrical conductivity, and fluorescence intensity (<i>I</i><sub>340</sub>) is established, indicating that water–alcohol solutions behave as self-organized dispersed systems.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"375 - 383"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665869","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
Test System for Determining Dissolved Oxygen in Water Objects 测定水中溶解氧的试验系统
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-12-05 DOI: 10.3103/S0027131425700439
M. A. Avvakumova, N. N. Yashchenko, S. V. Zhitar, E. G. Zinovjeva, A. N. Lyshikov
{"title":"Test System for Determining Dissolved Oxygen in Water Objects","authors":"M. A. Avvakumova,&nbsp;N. N. Yashchenko,&nbsp;S. V. Zhitar,&nbsp;E. G. Zinovjeva,&nbsp;A. N. Lyshikov","doi":"10.3103/S0027131425700439","DOIUrl":"10.3103/S0027131425700439","url":null,"abstract":"<p>A test system for determining the dissolved oxygen content in water in the range of 0 to 14 mg/L is developed which consists of a tablet, an ampule, and an indicator scale. Testing is carried out on eight water bodies in the Yadrinsky District of the Chuvash Republic: the Sura, Vyla, Arbashka, and Mochkaushka rivers; Sergach and Round Pit lakes; and Mirsky Pond. Samples were taken in June, 2024 in accordance with <i>GOST</i> (State Standard) <i>59024-2020</i>. The reliability of the results is confirmed by the Winkler iodometric titration method. It is found that the dissolved oxygen content in the water samples from the considered reservoirs is at a level of at least 6 mg/L, which corresponds to the norms of <i>RD</i> (Regulatory Document) <i>52.24.419-2019</i> for fishery facilities in the summer season.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 6","pages":"393 - 396"},"PeriodicalIF":0.5,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665948","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
Tungsten(VI) Complexes with 2-Hydroxy-5-chlorothiophenol in the Presence of Aminophenols and Their Application 氨基酚存在下钨(VI) - 2-羟基-5-氯噻吩配合物及其应用
IF 0.5
Moscow University Chemistry Bulletin Pub Date : 2025-09-04 DOI: 10.3103/S0027131425700361
Zalov Ali Zal
{"title":"Tungsten(VI) Complexes with 2-Hydroxy-5-chlorothiophenol in the Presence of Aminophenols and Their Application","authors":"Zalov Ali Zal","doi":"10.3103/S0027131425700361","DOIUrl":"10.3103/S0027131425700361","url":null,"abstract":"<p>In the present paper, we report results from liquid–liquid extraction-spectrophotometric studies on two different systems, each containing W(VI), a 2-hydroxy-5-chlorothiophenol (H<sub>2</sub>L), and aminophenols (AP<sub>1,2</sub>), namely, 2(<i>N</i>,<i>N</i>-dimethylaminomethyl)-4-chlorphenol (АP<sub>1</sub>) and 2(<i>N</i>,<i>N</i>-dimethylaminomethyl)-4-bromphenol (AP<sub>2</sub>)}. Extraction of mixed-ligand complexes is maximal at pH 4.1–5.2. The absorption maxima of the mixed-ligand complexes (MLCs) W(V)–L–AP<sub>1,2</sub> lie in the range of 476–480 nm. The molar absorption coefficients are (2.3–2.4) × 10<sup>4</sup>. The proposed method were applied to the determination of tungsten in steel and soil samples.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"80 5","pages":"330 - 339"},"PeriodicalIF":0.5,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990444","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
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