Asian Journal of Chemical Sciences最新文献_第9页

Phenolphthalein Indicator in Titrimetric Estimation of Benzoic Acid Solubility and Distribution in Water and Benzene-Buffer Solutions 苯甲酸在水和苯缓冲溶液中的溶解度和分布的滴定测定中的酚酞指示剂

Asian Journal of Chemical Sciences Pub Date : 2022-06-04 DOI: 10.9734/ajocs/2022/v11i419128

S. Mishra

{"title":"Phenolphthalein Indicator in Titrimetric Estimation of Benzoic Acid Solubility and Distribution in Water and Benzene-Buffer Solutions","authors":"S. Mishra","doi":"10.9734/ajocs/2022/v11i419128","DOIUrl":"https://doi.org/10.9734/ajocs/2022/v11i419128","url":null,"abstract":"In solubility and partitioning process of benzoic acid, the various factors are involved such as temperature, solute-solvent interaction and dissociation of acid into ionic state in taking solvents. Here, we reported the benzoic acid (solute) solubility in gram/100gram of solvent in different pH benzene-buffer solutions which are analyzed by using of titration method and partition study of these acid into solvents like water and benzene layer by shake-flask acid-base titration method, at room temperature (25°C) for 24 hours. In titrimetric estimation the solute benzoic acid solubility and their partition in between of water and in different pH buffer solutions as in medium of acidic, neutral and basic, a phenolphthalein indicator have been used well. The solvents and benzene-buffer solutions having different pH 4.0, 7.0 and 9.0 is titrated against as 0.01, 0.05 and 0.1N NaOH solutions by using phenolphthalein as indicator, where the end point show a pink color for each reading. Concentration of benzoic acid into water and solvent benzene layers is being calculated as by applying the equation of normality determination and distribution coefficient as from Nernst distribution law equation.","PeriodicalId":8505,"journal":{"name":"Asian Journal of Chemical Sciences","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85393559","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

Adsorbents Used for the Adsorptive Removal of Highly Hazardous Arsenic from Aqueous Solution: A Review 用于吸附去除水溶液中高浓度砷的吸附剂:综述

Asian Journal of Chemical Sciences Pub Date : 2022-05-26 DOI: 10.9734/ajocs/2022/v11i319124

N. Alamrani, Yazeed Alotaibi, Fahad Oudah Eid Alhawiti, Theyab Ali T. Almutairi, Essa Almutairi, Mashree Mohammad M. Albalawi, Hatem A. Al-Aoh, Syed Khalid Mustafa

{"title":"Adsorbents Used for the Adsorptive Removal of Highly Hazardous Arsenic from Aqueous Solution: A Review","authors":"N. Alamrani, Yazeed Alotaibi, Fahad Oudah Eid Alhawiti, Theyab Ali T. Almutairi, Essa Almutairi, Mashree Mohammad M. Albalawi, Hatem A. Al-Aoh, Syed Khalid Mustafa","doi":"10.9734/ajocs/2022/v11i319124","DOIUrl":"https://doi.org/10.9734/ajocs/2022/v11i319124","url":null,"abstract":"Millions of people worldwide are adversely affected by Arsenic continuing exposure, so providing arsenic-free consumption of water is an immense task for the researchers. The chemistry, content of arsenic-contaminated water as well as adsorption play a big role in arsenic elimination. The mechanism of adsorption technology's elimination of As (V) from the water was simply presented as the elements that govern various adsorption paths. The effects of a variety of adsorbents on As (V) elimination from aquatic were explored in the present research, which classified the materials used as adsorbents based on physical, chemical, and biological processes. When choosing an adsorbent, adsorption capability is an important factor to consider. As a result, developing As (V) elimination from aquatic adsorption strategies includes developing environmentally acceptable materials with effectual adsorption abilities, refining the preparation and alteration procedures of recent adsorbents, and boosting renewal effectiveness. After choosing a particular adsorbent for As (V) elimination from water, regional features of arsenic-polluted water, applied viability of the adsorption process, besides suitable environments of respectively material must be extensively reviewed and analyzed. The current study gives an outline of the adsorption technique to remove arsenic from wastewater, as well as the adsorption capacity of various adsorbents.","PeriodicalId":8505,"journal":{"name":"Asian Journal of Chemical Sciences","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76229574","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

Fractionation, Mobility and Environmental Risk of Trace Metals in the Sediments from N’zi River, Côte d’Ivoire N 'zi河沉积物中微量金属的分异、迁移率及环境风险Côte d '科特迪瓦

Asian Journal of Chemical Sciences Pub Date : 2022-05-26 DOI: 10.9734/ajocs/2022/v11i319125

Ahbeauriet Ahmed Ouattara, Koffi Pierre dit Adama N’goran, M. Soro, H. Koné, Kouassi Beranger N’guessan, K. M. Yao

{"title":"Fractionation, Mobility and Environmental Risk of Trace Metals in the Sediments from N’zi River, Côte d’Ivoire","authors":"Ahbeauriet Ahmed Ouattara, Koffi Pierre dit Adama N’goran, M. Soro, H. Koné, Kouassi Beranger N’guessan, K. M. Yao","doi":"10.9734/ajocs/2022/v11i319125","DOIUrl":"https://doi.org/10.9734/ajocs/2022/v11i319125","url":null,"abstract":"Despite increasing human activities, such as agriculture, little information is available on the status of trace metals contamination in rivers in developing countries including Côte d’Ivoire (West Africa). The aim of this study was study chemical fractions of Cu, Pb, Zn, and Ni, to identify mobility, sources and to evaluate ecological risks of traces metal in sediment of N’zi River using modified BCR sequential extraction procedure. The results showed that all metal were dominated by residual fractions. Labile fractions of Pb accounted for 0.0 – 68% of total contents indicating significant anthropogenic sources for Pb, while for Cu, Ni and Zn results suggesting natural sources. The potential mobility of the metals manifested following order: Ni > Zn > Cu > Pb. Risk assessment code indicated low to medium risk for Pb and low risk for other metals in the sediments. \u0000Cluster analysis (CA) and Matrix correlation were used to detect the relationship between the studied sampling sites and to see if some of the parameters interrelated with each trace metal concentration in exchangeable fraction. Results indicated high anthropogenic contamination at stations near to urban and agricultural areas.","PeriodicalId":8505,"journal":{"name":"Asian Journal of Chemical Sciences","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85067178","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

Chromium (VI) Removal from Wastewater by Batch Adsorption Mode using Date Nut Carbon 枣核炭间歇吸附法去除废水中的铬(ⅵ

Asian Journal of Chemical Sciences Pub Date : 2022-04-29 DOI: 10.9734/ajocs/2022/v11i319123

S. Sophie Beulah, K. Muthukumaran

引用次数: 0

Synthesis and Spectral Characterization of Chalcone dervived from 6-Acetyl-2H-1,4-benzoxazin-(4H)-3-one: Single-crystal XRD, Hirshfeld Surface Analysis and DFT Calculations 6-乙酰基- 2h -1,4-苯并恶嗪-(4H)-3-酮查尔酮的合成及光谱表征:单晶XRD、Hirshfeld表面分析和DFT计算

Asian Journal of Chemical Sciences Pub Date : 2022-04-16 DOI: 10.9734/ajocs/2022/v11i319122

R. Rajalakshmi, S. Ramkumar, A. Sripriya

引用次数: 1

Metal Pollution, Ecological and Health Risks Status of the Open Waters from the Lagoon Area II of Ébrié System (Côte d'Ivoire) Ébrié系统泻湖II区开放水域金属污染、生态和健康风险状况(Côte科特迪瓦)

Asian Journal of Chemical Sciences Pub Date : 2022-04-05 DOI: 10.9734/ajocs/2022/v11i319121

Agole Mahi ARTHUR MAHI, Yao Marcel Konan, Claon Jean Stephane, Trokourey Albert

{"title":"Metal Pollution, Ecological and Health Risks Status of the Open Waters from the Lagoon Area II of Ébrié System (Côte d'Ivoire)","authors":"Agole Mahi ARTHUR MAHI, Yao Marcel Konan, Claon Jean Stephane, Trokourey Albert","doi":"10.9734/ajocs/2022/v11i319121","DOIUrl":"https://doi.org/10.9734/ajocs/2022/v11i319121","url":null,"abstract":"The assessments of the seasonal metal pollution, as well as the subsequent likely ecological and health risks, of the open waters from the lagoon area II of Ébrié system were the subject of this study. For this purpose, the seasonal mean of As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, and Zn contents of these waters determined over the period from June 2020 to May 2021 were used. The water quality guidelines SEQ-Eau (version 2) and NQE DCE-UE 2018/240 were used to assess the seasonal ecological quality of these waters. As for the seasonal biota health risks, they have been assessed with the water quality guidelines of NYSDEC, US-EPA and SAVEX. Those concerning to Human health risks, they were with WQSSW of Port Gamble S'Klallam tribe. The results showed an important ecological degradation of these waters in all seasons. This has been due to As, Cd, Hg, Ni, and Pb. The likely biota health risks are also significant in all seasons, due to As, Hg, Ni, and Pb. As for the likely Human health risks, they are also important in all seasons. They are due to As, Hg, and Ni over the study period.","PeriodicalId":8505,"journal":{"name":"Asian Journal of Chemical Sciences","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90683522","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

Controlled Catalytic Reduction in Synthesising Pure Tetrahydrocurcumin 控制催化还原合成纯四氢姜黄素

Asian Journal of Chemical Sciences Pub Date : 2022-03-25 DOI: 10.9734/ajocs/2022/v11i219120

Chandra Sekhara Rao Nethinti, Dhanraj T. S. S. Sundaram, Sarvesh Kumar, Sreenivasulu Boju, Raghu Babu Korupolu, Annapurna Nowduri, Uttam Kumar Ray

引用次数: 1

Structural Characterization, DFT, Molecular Docking and Cytotoxic Studies of Metal (II) Complexes Derived from Thiosemicarbazide 巯基氨基脲类金属配合物的结构表征、DFT、分子对接及细胞毒性研究

Asian Journal of Chemical Sciences Pub Date : 2022-03-25 DOI: 10.9734/ajocs/2022/v11i219119

T. Manjuraj, G. Krishnamurthy, T. C. M Yuvaraj, N. Jayanna, Mohammed Imadadulla

{"title":"Structural Characterization, DFT, Molecular Docking and Cytotoxic Studies of Metal (II) Complexes Derived from Thiosemicarbazide","authors":"T. Manjuraj, G. Krishnamurthy, T. C. M Yuvaraj, N. Jayanna, Mohammed Imadadulla","doi":"10.9734/ajocs/2022/v11i219119","DOIUrl":"https://doi.org/10.9734/ajocs/2022/v11i219119","url":null,"abstract":"Co(II), Ni(II) and Cu(II) complexes of N and O donor ligand derived from ,5-dinitrosalicylicacid and thiosemicarbazide, the spectroscopy techniques like UV-Visible, FT-IR, NMR, mass spectrometry, p-XRD and SEM analysis were used to structurally characterize the metal complexes. From the analytical and spectral evidence, the square planar and octahedral geometry has been proposed to metal (II) complexes. In addition to this computational density functional theory (DFT) using B3LYP/6-31Gþ(d, p)/Lanl2dz(f) method in the ground state was performed, the calculations were done to confirm the geometry of the complexes and also HOMO-LUMO excitation energies levels were also calculated. Additionally, MTT test was used to perform cytotoxic assays on selected MCF-7 (estrogen receptor-positive human breast cancer cells) and HeLa (human cervical cancer cell line) cell lines. The antibacterial test was performed via the disc plate method against Escherichia coli and Staphylococcus aureus, and was further supported by molecular docking interactions using protein receptor SEC2 (PDB code: 1STE) in Staphylococcus aureus.","PeriodicalId":8505,"journal":{"name":"Asian Journal of Chemical Sciences","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86508226","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

Minerals That Make Up the Montmorillonite Group 构成蒙脱石群的矿物

Asian Journal of Chemical Sciences Pub Date : 2022-03-22 DOI: 10.9734/ajocs/2022/v11i219118

Khandamov Davron Abdikadirovich, Djumaniyazova Malokhat Rihsiyevna, Tursunova Dilnozakhon Isroiljon Qizi

引用次数: 0

Optimization of Extraction Process Based on Neural Network 基于神经网络的提取过程优化

Asian Journal of Chemical Sciences Pub Date : 2022-03-05 DOI: 10.9734/ajocs/2022/v11i219117

Jing Sun, Qiong Chen

引用次数: 4