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KINETIC STUDY OF THE FERROCENE COMPLEX IN BINARY IONIC LIQUID MEDIA 二茂铁配合物在二元离子液体介质中的动力学研究
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638249
None A.Salendra, None A. Rochliadi, None I. Mulyani, None G. Grampp, None A. Patah
{"title":"KINETIC STUDY OF THE FERROCENE COMPLEX IN BINARY IONIC LIQUID MEDIA","authors":"None A.Salendra, None A. Rochliadi, None I. Mulyani, None G. Grampp, None A. Patah","doi":"10.31788/rjc.2023.1638249","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638249","url":null,"abstract":"A binary ionic liquid (ILs)-based electrolyte with advanced physicochemical properties has been successfully prepared. The ionic conductivity ( σ ) values of ILs [C 4 mim][PF 6 ] and [C 4 mim][Tf 2 N] were measured using electrochemical impedance spectroscopy are 2.12 and 4.75 mS/cm at 30  C, respectively. The results of electrode kinetics measurement using cyclic voltammetry revealed a value of the diffusion coefficient ( D ) of ferrocene in [C 4 mim][PF 6 ] of 3.3 x 10 -7 cm 2 /s and [C 4 mim][Tf 2 N] 1.60 x 10 -6 cm 2 /s. The ferrocene complex obtained has an electron transfer rate constant ( k s ) of 7.9 x 10 -4 cm/s in [C 4 mim][PF 6 ] and 1.82 x 10 -3 cm/s in [C 4 mim][Tf 2 N]. The addition of [C 4 mim][Tf 2 N] to [C 4 mim][PF 6 ] increased ionic conductivity, diffusion coefficient, and electron transfer rate constant overall, but only to the range of pure ILs. Furthermore, changes in conductivity, diffusion coefficient, and electron transfer rate constant value are proportional to temperature changes, according to the Arrhenius equation. Based on the diffusion activation energy ( E a D ) and the slight decrease in conductivity with temperature, [C 4 mim][PF 6 ] 0.50 -[C 4 mim][Tf 2 N] 0.50 is a superior electrolyte candidate at low-temperature operation.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"7 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135594672","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 RAPID SENSITIVE AND ACCURATE LCMS METHOD FOR THE DETERMINATION OF MUTAGENIC IMPURITIES IN MOXIFLOXACIN HCL 一种快速、灵敏、准确测定盐酸莫西沙星中致突变杂质的LCMS方法
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638349
None K. Aparna, K. Vijaya Rachel, K.M.V. Narayana Rao
{"title":"A RAPID SENSITIVE AND ACCURATE LCMS METHOD FOR THE DETERMINATION OF MUTAGENIC IMPURITIES IN MOXIFLOXACIN HCL","authors":"None K. Aparna, K. Vijaya Rachel, K.M.V. Narayana Rao","doi":"10.31788/rjc.2023.1638349","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638349","url":null,"abstract":"A quantitative method was developed and then validated for two genotoxic impurities (GTS-STG-1A and GTS/STG-1B) in moxifloxacin hydrochloride API samples using the LC–MS approach. The analytes (GTS-STG-1A and GTS/STG-1B) were separated on XDB-column [C8; Eclipse; 5 µm particle dimension; 150 mm length; and ID of 4.6 mm] using a blend of solvent systems ‘A’ (10 mM strength ammonium formate) and ‘B’ (pure acetonitrile) in a gradient pattern elution. The GTS-STG-1A and GTS/STG-1B were detected by positive mode electrospray ionization. The transitions at m/z 332.1–286.2 and 344.2–298.4 were used for GTS-STG-1A and GTS/STG-1B quantitative analysis. Better linearity for the concentration ranges of 0.3863 ppm to 5.7938 ppm for GTS-STG-1A and 0.3786 ppm to 5.6790 ppm for GTS/STG-1B was obtained. The accuracies (94.6% to 99.35 for GTS-STG-1A and 83.25% to 105.9% for GTS-STG-1B) and precisions (1.40% for GTS-STG-1A and 4.30% for GTS-STG-1B) fell within the allowable threshold. The GTS-IA and GTS-IB demonstrated adequate stability under-examined conditions. By keeping track of the GTS-STG-1A and GTS/STG-1B content in the moxifloxacin hydrochloride API during the experiment, the usefulness of the LC-MS technique was shown.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135594916","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
PHYSIOLOGICAL EFFECTS OF TURMERIC (Curcuma longa L) IN THE FORM OF NANO AND CRUDE EXTRACT 姜黄纳米提取物和粗提取物的生理作用
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638471
Leo Jumadi Simanjuntak, Cheryl Grace Pratiwi Rumahorbo, Putri Cahaya Situmorang
{"title":"PHYSIOLOGICAL EFFECTS OF TURMERIC (Curcuma longa L) IN THE FORM OF NANO AND CRUDE EXTRACT","authors":"Leo Jumadi Simanjuntak, Cheryl Grace Pratiwi Rumahorbo, Putri Cahaya Situmorang","doi":"10.31788/rjc.2023.1638471","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638471","url":null,"abstract":"Turmeric ( Curcuma longa L.) is well-known as a medicinal plant with many physiological effects on the human body. This study compares the physiological effects of nano-extract and crude turmeric extract on blood, kidney, liver","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135595645","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
MICROWAVE-ASSISTED FUNCTIONALIZATION OF INDAZOLES: AN OVERVIEW 微波辅助吲哚功能化:综述
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638444
None S. Mondal
{"title":"MICROWAVE-ASSISTED FUNCTIONALIZATION OF INDAZOLES: AN OVERVIEW","authors":"None S. Mondal","doi":"10.31788/rjc.2023.1638444","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638444","url":null,"abstract":"Indazole-based heterocyclic compounds possessing significant medicinal properties form the basis of developing several pharmaceuticals. Microwave-assisted organic synthesis is one of the most effective and promising techniques from the perspective of green chemistry, as it increases reaction rates and yields while decreasing wasteful byproducts. Functionalization of indazole derivatives under microwave irradiation is achieving tremendous interest in recent times. Various cross-coupling reactions are generally utilized during the microwave-assisted functionalization of indazoles. This review article chronologically describes different types of functionalization of indazoles assisted by microwave irradiation with up-to-date literature coverage.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135595688","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
AIR QUALITY IN THE COLOMBIAN ANDEAN REGION: BEHAVIOR OF TROPOSPHERIC NO2 FROM SATELLITE DATA 哥伦比亚安第斯地区的空气质量:来自卫星数据的对流层no2的行为
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638353
C. H. Oviedo Sanabria, J.P. Rojas Suárez, M. Vergel Ortega
{"title":"AIR QUALITY IN THE COLOMBIAN ANDEAN REGION: BEHAVIOR OF TROPOSPHERIC NO2 FROM SATELLITE DATA","authors":"C. H. Oviedo Sanabria, J.P. Rojas Suárez, M. Vergel Ortega","doi":"10.31788/rjc.2023.1638353","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638353","url":null,"abstract":"This study focuses on the analysis of air quality behavior, with a specific focus on tropospheric nitrogen dioxide as a parameter of interest in the Andean region of Colombia. To achieve this analysis, 12 cities in the country were taken as reference points. By processing more than 250,000 images, crucial data were extracted to evaluate the behavior of air quality during the period between 2019 and 2022. The results reveal a counterintuitive behavior, as the city with the most inhabitants is not the one with the highest pollution levels.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"389 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136256753","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
PHYSICOCHEMICAL PROPERTIES, GC-MS ANALYSIS, AND ANTIBACTERIAL ASSAY OF Citrus limon PEELS ESSENTIAL OIL AGAINST ANTIBIOTIC RESISTANT Escherichia Coli 柠檬皮精油对耐药大肠杆菌的理化性质、GC-MS分析及抑菌试验
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638442
Nur Ain Khairunnisa, None Yuandani, Abdi Wira Septama, Sony Eka Nugraha, None Sufitni
{"title":"PHYSICOCHEMICAL PROPERTIES, GC-MS ANALYSIS, AND ANTIBACTERIAL ASSAY OF Citrus limon PEELS ESSENTIAL OIL AGAINST ANTIBIOTIC RESISTANT Escherichia Coli","authors":"Nur Ain Khairunnisa, None Yuandani, Abdi Wira Septama, Sony Eka Nugraha, None Sufitni","doi":"10.31788/rjc.2023.1638442","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638442","url":null,"abstract":"Essential oils (EOs) produced naturally by plants have been used as antimicrobial agents despite the majority of compounds have not been studied. The study was conducted to assess the effect of EOs found in Citrus limon peels against antibiotic resistance of E. coli by quantifying the specific gravity, refractive index, and GC-MS. The result of GC-MS presented that D-limonene, α-citral, and β-citral are the major constituents of C. limon EO, presenting 56.85; 13.24; and 10.40% of the oil content, respectively. Tests on the essential oil of C. limon confirm its potential antibacterial activity. This assertion was supported by the MIC and MBC values obtained at 250 μg/mL and 500 μg/mL, respectively. Meanwhile, tetracycline showed identical MIC and MBC at 125 μg/mL. The interaction between essential oil and tetracycline was evaluated using a checkerboard assay. Moreover, C. limon peels essential oil had a synergistic to decrease biofilm formation in bacterial tested . In addition, the combination of C. limon peels essential oil and tetracycline illustrated potential activities to lysis the cells and inhibit the efflux pumps of E. coli. The result suggests the combination of C. limon peels essential oil and tetracycline could be used to eradicate antibiotic-resistant E. coli.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136259066","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
NLO ACTIVITY AND COMPUTATIONAL DISCUSSION OF HALOGEN-SUBSTITUTED CHALCONE DERIVATIVES 卤素取代查尔酮衍生物的Nlo活性及计算讨论
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1628276
V. S. Vadivoo, R. Balachander, P. Vijaya, C. Mythili
{"title":"NLO ACTIVITY AND COMPUTATIONAL DISCUSSION OF HALOGEN-SUBSTITUTED CHALCONE DERIVATIVES","authors":"V. S. Vadivoo, R. Balachander, P. Vijaya, C. Mythili","doi":"10.31788/rjc.2023.1628276","DOIUrl":"https://doi.org/10.31788/rjc.2023.1628276","url":null,"abstract":"The four halogen-substituted chalcones 1–4 have been synthesized and analyzed to FT-Infrared, UV-Visible, GC-MS spectrometer, and 1D NMR (1H and 13C) spectroscopy techniques. Computational calculations were carried out for geometrical optimization of structure regards bond length, bond angle, and torsional angle estimated. The molecular properties of donor-acceptor electron delocalization (NBO), Electron density, and bond critical point are carryover in (AIM), the polar site of molecules is determined by (MEP), HOMO-LUMO, and the dipole moment was calculated by GAUSSUION-09 Package. The polarizability and first-order hyperpolarizability calculations derived from non-linear optical (NLO) properties for the synthesized compounds (1-4). The disc diffusion method was used to investigate the microbial activity of antibacterial and antifungal activity.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69411650","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
PHOTOCATALYTIC DEGRADATION OF CONGO RED USING BISMUTH VANADATE-NICKEL SULPHIDE COMPOSITE 钒酸铋-硫化镍复合材料光催化降解刚果红
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638260
J. Panwar, L. Joshi, R. Ameta, D. Soni
{"title":"PHOTOCATALYTIC DEGRADATION OF CONGO RED USING BISMUTH VANADATE-NICKEL SULPHIDE COMPOSITE","authors":"J. Panwar, L. Joshi, R. Ameta, D. Soni","doi":"10.31788/rjc.2023.1638260","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638260","url":null,"abstract":"A composite of BiVO4-NiS was synthesized and used as a photocatalyst for the photocatalytic degradation of Congo red dye. BiVO4 and NiS were mixed in a 1:1 ratio. The composite was characterized on the basis of XRD, EDX, and FESEM data. The progress of photocatalytic degradation was monitored with a spectrophotometer. The effects of different parameters such as pH, dye concentration, amount of composite and light intensity on the degradation rate were investigated. The composite exhibited the highest catalytic activity in a neutral medium. It was found that higher activity, more stable nature, and recyclability of BiVO4-NiS composite were beneficial for the photodegradation of Congo red dye.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69412031","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
EXPLORING THE ROLE OF A BIO-SURFACTANT IN THE STABILIZATION OF HIGHLY CONCENTRATED IRON ORE SLURRY 探讨生物表面活性剂在高浓度铁矿矿浆稳定中的作用
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638275
S. Das, S. K. Biswal, R. K. Mohapatra
{"title":"EXPLORING THE ROLE OF A BIO-SURFACTANT IN THE STABILIZATION OF HIGHLY CONCENTRATED IRON ORE SLURRY","authors":"S. Das, S. K. Biswal, R. K. Mohapatra","doi":"10.31788/rjc.2023.1638275","DOIUrl":"https://doi.org/10.31788/rjc.2023.1638275","url":null,"abstract":"The formulation and stabilization of highly concentrated solid-water slurry for transportation are gaining high interest. The influence of saponin extracted from A. auriculiformis on the stabilization of a high-grade iron ore sample in the slurry was studied. The collected iron ore powder and dried iron ore slurry samples were compared with the help of UV-vis, XRF, XRD, SEM, and EDS analysis. Moreover, the DSC spectral graph for both heat flow and mass loss with respect to time is plotted. The results confirmed that the surfactant molecules (aqueous A. auriculiformis) coated well on the iron surface which form an effective barrier between the iron ore particles. Further, the solubility of iron ore powder increased after adding an aqueous extract of Acacia auriculiformis as evident from the UV-vis spectral study.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69412120","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: 1
HYDROGEN PRODUCTION FROM ETHANOL BY STEAM REFORMING OVER NICKEL AND COBALT GEOTHERMAL WASTE SUPPORTED CATALYST 镍钴地热废弃物负载催化剂上蒸汽重整乙醇制氢
Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1616808
{"title":"HYDROGEN PRODUCTION FROM ETHANOL BY STEAM REFORMING OVER NICKEL AND COBALT GEOTHERMAL WASTE SUPPORTED CATALYST","authors":"","doi":"10.31788/rjc.2023.1616808","DOIUrl":"https://doi.org/10.31788/rjc.2023.1616808","url":null,"abstract":"Hydrogen production was studied over nickel and cobalt geothermal waste-supported catalysts. Due to their good catalytic activity, nickel, and cobalt are widely used as catalysts in ethanol steam reforming. The geothermal waste catalyst (GWC) was synthesized by hydrothermal process, then prepared using wet-impregnation with nickel nitrate and cobalt nitrate as the precursors. SEM analysis shows that nickel and cobalt successfully adhered to the GWC, which decreased the surface area. Using nickel and cobalt in ethanol steam reforming produces a higher hydrogen yield than a GWC. The best hydrogen yield was 43.04% over Ni/GWC at 550oC. Nickel can actively break C-C, OH, and C-H bonds to produce hydrogen and reduces the brønsted acid site as the carbon formation active site.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69410174","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: 1
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