International Journal of Chemistry最新文献_第3页

Advances in Polymer Nanocomposite Materials for Photocatalytic Degradation of Polynuclear Aromatic Hydrocarbons in Environmental Matrices: A Review 高分子纳米复合材料光催化降解环境基质中多核芳烃的研究进展

International Journal of Chemistry Pub Date : 2023-03-01 DOI: 10.5539/ijc.v15n1p13

A. Munyengabe, L. Sibali, P. Ndibewu

{"title":"Advances in Polymer Nanocomposite Materials for Photocatalytic Degradation of Polynuclear Aromatic Hydrocarbons in Environmental Matrices: A Review","authors":"A. Munyengabe, L. Sibali, P. Ndibewu","doi":"10.5539/ijc.v15n1p13","DOIUrl":"https://doi.org/10.5539/ijc.v15n1p13","url":null,"abstract":"The immobilization of metal oxide nanoparticles into different anchoring media has recently gained great interest owing to their applications in water treatment. The choice of the polymers for the incorporation of the active catalyst particle is highly motivated by several advantages displayed by them. These include mechanical stability, chemical inertness and resistance to ultraviolet radiations, environmental stability, ease availability, and low prices. Additionally, the use of polymer nanocomposite materials (PNMs) as photocatalysts offers the possibility of a facile separation and reuse of the materials, eliminating thus the post-treatment separation processes and implicitly reducing the costs of the procedure. However, this review paper focused on recent advances made in PNMs for the photocatalytic decontamination of polynuclear aromatic hydrocarbons (PAHs) in environmental matrices. It further explores some trends in research and the markets. The review also shows the current advances made on the understanding of detoxification mechanisms and toxicological effects of PAHs in photocatalytic processes as a green alternative method for environmental pollution control and remediation. It further critically explores different ways to improve workflows for PNMs characterization and testing and the emerging need for the analysis of PAHs. It finally provides insights into the understanding of how to set up and optimize manufacturing methods of PNMs while avoiding costly time traps that prevent getting the correct answer in addressing PAH-related environmental pollution problems. ","PeriodicalId":13866,"journal":{"name":"International Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87120298","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

Characterisation of the Molecular Lipophilicity of a Series of Seven Benzymidazolyl-Chalcone Molecules with Anthelmintic Activities 具有驱虫活性的7个苯咪唑查尔酮分子亲脂性的表征

International Journal of Chemistry Pub Date : 2023-02-27 DOI: 10.5539/ijc.v15n1p1

François Kadjo Kassi, M. Koné, B. Ouattara, Georges Stéphane Dembélé, P. Karamanis, N. Ziao

{"title":"Characterisation of the Molecular Lipophilicity of a Series of Seven Benzymidazolyl-Chalcone Molecules with Anthelmintic Activities","authors":"François Kadjo Kassi, M. Koné, B. Ouattara, Georges Stéphane Dembélé, P. Karamanis, N. Ziao","doi":"10.5539/ijc.v15n1p1","DOIUrl":"https://doi.org/10.5539/ijc.v15n1p1","url":null,"abstract":"The aim of this work is to develop and improve anthelmintics that can contribute effectively to the control of certain new and resistant races of nematodes in the treatment of parasitic diseases in humans. This situation is of increasing concern to the agricultural, medical and health communities. The research carried out is particularly interested in the determination of the lipophilicity of a series of substituted molecules of the benzymidazolyl-chalcone family, molecules with proven activity against worms. This work has enabled us to predict and better understand their biological activities (antihistamines, antifungals, antiallergics, antibacterials and antivirals). It has also allowed us to identify the best anthelmintics that offer a broad spectrum of action, a high degree of efficacy, a good safety margin and a high degree of flexibility of use in order to limit resistance problems. The REKKER, KLOPMAN and IROFF methods and the MOLINSPIRATION software were used to determine the lipophilicity of these molecules. The values obtained for the partition coefficients revealed that these molecules are naturally lipophilic. These results allow us to appreciate the important role of molecular lipophilicity calculation methods in determining the mode of action of bioactive molecules.","PeriodicalId":13866,"journal":{"name":"International Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83469780","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

Antibacterial and Antifungal Activity Essay of Alkaloids Extracted from Four Combretaceae Used in Senegal 塞内加尔四种菊科生物碱的抑菌抑菌活性研究

International Journal of Chemistry Pub Date : 2022-10-30 DOI: 10.5539/ijc.v14n2p59

Ousmane Niass, A. Diop, Issa Samb, A. Diop, A. Dieng, Y. Diop

引用次数: 0

Efficacy and Safety of Essential Oils in The Control of Mosquito: A Review of Research Findings 精油灭蚊的有效性和安全性:研究进展综述

International Journal of Chemistry Pub Date : 2022-10-25 DOI: 10.5539/ijc.v14n2p45

Z. Ladan, B. Okoli, F. Mtunzi

{"title":"Efficacy and Safety of Essential Oils in The Control of Mosquito: A Review of Research Findings","authors":"Z. Ladan, B. Okoli, F. Mtunzi","doi":"10.5539/ijc.v14n2p45","DOIUrl":"https://doi.org/10.5539/ijc.v14n2p45","url":null,"abstract":"For millennia, people have utilized essential oil-rich plants to control mosquitoes and other hematophagous insects. A review of the literature found that terpenoids and \"sesquiterpenoid-rich oils\" were effective in mosquito control. Due to the benign impression and successful prevention of mosquito bites, there has been a recent surge in the acceptance of biobased agents as mosquito control solutions, in conjunction with the worldwide demand to take action to battle climate change and its consequences. Materials for this review, which included works published for the last decade and even earlier, were sourced from the research databases Scopus, Web of Science, PubMed, ERIC, IEEE Xplore, ScienceDirect, Directory of Open Access Journals (DOAJ), and JSTOR using the keywords \"essential oils,\" \"larvicidal activity,\" \"oviposition deterrent,\" \"repellents,\" \"toxicity,\" \"safety,\" and \"efficacy.\" \" Recent research has found that low and middle-income African populations prefer plant-based repellents over manufactured chemical repellents such as N, N-diethyl-m-toluamide and N, N-diethyl phenylacetamide. Although ethnobotanical studies have demonstrated that biobased repellents are effective, environmentally friendly, and have almost no biohazard impact, they are also a source of bioactive substances for the creation of novel mosquito repellent products. The World Health Organization and other relevant agencies have yet to certify and accept the bulk of these plants with potential viability. Furthermore, there is a very limited comparison list of the efficiency and safety of these plant-based repellents. As a result, there is a need to further investigate these bio-based natural repellents and their formulations for successful mosquito control, allowing for the production of novel repellents that deliver high repellence while also ensuring consumer safety.","PeriodicalId":13866,"journal":{"name":"International Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76365989","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

Analysis of Water Quality Using Physico-Chemical Parameters in Different Cities of Pakistan 巴基斯坦不同城市水质理化参数分析

International Journal of Chemistry Pub Date : 2022-10-19 DOI: 10.5539/ijc.v14n2p28

Tasneem Sarwar, Huma Shakoor, Janas Khan, A.A. Shah, Shehla Amin, Anum Sajjad, Ziaullah Ziaullah, J. Iqbal

{"title":"Analysis of Water Quality Using Physico-Chemical Parameters in Different Cities of Pakistan","authors":"Tasneem Sarwar, Huma Shakoor, Janas Khan, A.A. Shah, Shehla Amin, Anum Sajjad, Ziaullah Ziaullah, J. Iqbal","doi":"10.5539/ijc.v14n2p28","DOIUrl":"https://doi.org/10.5539/ijc.v14n2p28","url":null,"abstract":"Present study was carried out to assess different parameters (physiochemical) of water for public health safety. 25 samples from majority of areas of Khyber-Pakhtunkhwa (KP) along with Rawalpindi and Islamabad were chosen. Total twelve parameter which include color, odour, pH, TSS (total suspended solids), TDS (total dissolved solids), Na (Sodium), K (Potassium), hardness, alkalinity, EC (Electric Conductivity), Cl (Chloride) and SO4 (Sulphate) were assessed for each sample and were compared with WHO and other limits. Results showed that very few samples 3 out of 14 in Mardan, 5/12 in Bannu, 2/11 in Buner, 3/4 in Batkhela, 1/6 in Malakand, 2/4 in Shangla, 3/18 in Mansehra, 2/7 in Karak, 1/17 in Kohat, 2/5 in Upper Dir, 3/12 in Islamabad, 3/11 in Abbottabad and 2 out of 17 samples were found to have objectionable color and odour. None of the samples exceeded the permissible limit of WHO for pH, TDS, alkalinity, Cl and SO4. While, other parameters like TSS was higher in 9 samples, Na in 2, K in 6, hardness in 1 and EC in 7 as compare to permissible limit. It was recommended that proper water treatment especially effective chlorination with residual chlorine be rendered at all sources in order to achieve safe water quality up to the consumer’s end. However, it is also important to investigate other potential water contaminations such as chemicals and microbial and radiological materials for a longer period of time, including human body fluids, in order to assess the overall water quality of Pakistan.","PeriodicalId":13866,"journal":{"name":"International Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85177438","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

Use of a Reactive Distillation in the Process of Producing Diethyl Ether Using Dewatering of Ethanol 反应精馏在乙醇脱水生产乙醚过程中的应用

International Journal of Chemistry Pub Date : 2022-10-08 DOI: 10.5539/ijc.v14n2p18

Elaheh Mash Attar

引用次数: 0

Crystal Growth, Structural and Thermal Studies of FeC4H4O6·2.5H2O FeC4H4O6·2.5H2O晶体生长、结构和热研究

International Journal of Chemistry Pub Date : 2022-07-04 DOI: 10.5539/ijc.v14n2p8

T. Fukami, S. Tahara

引用次数: 0

Synthesis of Analogues of Natural Product ‘Antheminone A’ and Evaluation of Their Anti-Cancer Activity 天然产物“花胺酮A”类似物的合成及其抗癌活性评价

International Journal of Chemistry Pub Date : 2022-06-20 DOI: 10.5539/ijc.v14n2p1

J. Obi

引用次数: 0

Reviewer Acknowledgements for International Journal of Chemistry, Vol. 14, No. 1 International Journal of Chemistry, Vol. 14, No. 1审稿人致谢

International Journal of Chemistry Pub Date : 2022-05-23 DOI: 10.5539/ijc.v14n1p54

A. John

{"title":"Reviewer Acknowledgements for International Journal of Chemistry, Vol. 14, No. 1","authors":"A. John","doi":"10.5539/ijc.v14n1p54","DOIUrl":"https://doi.org/10.5539/ijc.v14n1p54","url":null,"abstract":"International Journal of Chemistry wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal is greatly appreciated. Many authors, regardless of whether International Journal of Chemistry publishes their work, appreciate the helpful feedback provided by the reviewers. \u0000 \u0000Reviewers for Volume 14, Number 1 \u0000 \u0000Abdallah El-Gharbawy, Alexandria University, Egypt \u0000 \u0000Ahmad Galadima, Usmanu Danfodiyo University, Nigeria \u0000 \u0000Amal A. M. Elgharbawy, International Institute for Halal Research and Training, Malaysia \u0000 \u0000Ayodele Temidayo Odularu, University of Fort Hare, South Africa \u0000 \u0000Fatima Tuz Johra, Kookmin University, Bangladesh \u0000 \u0000Gholam Hossain Varshouee, National Petrochemical Company, Iran \u0000 \u0000Khaldun Mohammad Al Azzam, Al-Ahlyyia Amman University, Jordan \u0000 \u0000Nejib Hussein Mekni, Al Manar University, Tunisia \u0000 \u0000Sintayehu Leshe, Debre Markos University, Ethiopia \u0000 \u0000Sitaram Acharya, Dallas College, USA \u0000 \u0000Tony Di Feo, Natural Resources Canada, Canada \u0000 \u0000 \u0000 \u0000Albert John \u0000 \u0000On behalf of, \u0000 \u0000The Editorial Board of International Journal of Chemistry \u0000 \u0000Canadian Center of Science and Education","PeriodicalId":13866,"journal":{"name":"International Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74736259","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

Levels of Heavy Metals Contamination (As, Cd, Hg, Pb) in Some Human Consumption Water Sources in Agbangnizoun and Za-Kpota Town Halls, Southern Benin 贝宁南部Agbangnizoun和Za-Kpota市政厅一些人类饮用水源中的重金属污染水平(As, Cd, Hg, Pb)

International Journal of Chemistry Pub Date : 2022-05-23 DOI: 10.5539/ijc.v14n1p41

E. Azokpota, A. Karim, Alphonse S. Avocefohoun, Abdoul Kader Alassane Moussa, Constant Adandedjan, V. Ahyi, Jean Christian Alowanou, J. Adounkpe, D. Mama, D. Sohounhloué

{"title":"Levels of Heavy Metals Contamination (As, Cd, Hg, Pb) in Some Human Consumption Water Sources in Agbangnizoun and Za-Kpota Town Halls, Southern Benin","authors":"E. Azokpota, A. Karim, Alphonse S. Avocefohoun, Abdoul Kader Alassane Moussa, Constant Adandedjan, V. Ahyi, Jean Christian Alowanou, J. Adounkpe, D. Mama, D. Sohounhloué","doi":"10.5539/ijc.v14n1p41","DOIUrl":"https://doi.org/10.5539/ijc.v14n1p41","url":null,"abstract":"In the current decades, the increasing presence of metallic contaminants in water for human consumption has become a major public health concern. This concern is even more pronounced in rural areas such as in the Town Halls of Agbangnizoun and Za-Kpota where the majority of households use surface water, wells and tanks to satisfy their daily drinking water needs, without any prior treatment, due to the low level of access to drinking water supplied by the State. This study aims at assessing the levels of contamination of these resources in mercury (Hg), cadmium (Cd), lead (Pb) and arsenic (As). The mercury was determined using the cold vapor technique by the Direct Mercury Analyzer (DMA-80) while lead and cadmium were analyzed by molecular absorption spectrophotometry by the DR 3900. The Arsenic was extracted by distillation using the silver diethyldithiocarbamate method then measured by molecular spectrophotometry technique. The results show that surface waters contain great quantities of metals than well and cistern waters. Lead (220.97 ± 9.45 µg/L) and cadmium (20.13 ± 0.17 µg/L) in surface waters have levels above WHO guidelines and Bénin standards. On the other hand, there is no significant difference between the metal concentrations of well and cistern waters at the 5% threshold compared to the borehole water (witness sample). Significant correlations are established between toxic metals (Pb and Cd) and physical parameters (turbidity and suspended matters) at the threshold of 1 %. As for mercury (Hg) and arsenic (As), the concentrations are very lower than these of Cd and Pb and below the quantification limit of the device. These results confirm that the surface waters consumed by the populations of the Town Halls of Agbangnizoun and Za-Kpota do not respect drinking water standards.","PeriodicalId":13866,"journal":{"name":"International Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84546485","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