Review
Chemistry, Analytical
Denys Snigur, Ebaa Adnan Azooz, Olena Zhukovetska, Olena Guzenko, Wael Mortada
Summary: The cloud point extraction method (CPE) has gained significant attention for its green features and excellent speciation tool capabilities. Many modifications have been proposed to make it more environmentally friendly, cheap, and accurate. This review analyzes and evaluates recent innovations in CPE methods, providing insights into lesser-known approaches that are effective, non-toxic, and comparable to traditional procedures.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Pei Li, Caijiao He, Daohui Lin
Summary: A new method for extracting and quantifying nanoplastics from biological samples was developed in this study. The method involved alkaline digestion, cloud point extraction, and gold nanoparticles formation for quantification using single particle inductively coupled plasma mass spectrometry. The method was proven to be efficient and sensitive, allowing for accurate quantification of different sizes and surface functionalities of polystyrene nanoparticles. The method was validated using representative organism samples and showed good recovery rates and low limits of detection, making it a useful approach for studying the environmental behavior and toxicity of nanoparticles.
ENVIRONMENTAL POLLUTION
(2022)
Article
Metallurgy & Metallurgical Engineering
Yimeng Xu, Bicheng Deng, Shengting Kuang, Wuping Liao
Summary: A new aminophosphonate extractant, di(2-ethylhexyl) (N, N'-di(2-ethylhexyl) amino methyl) phosphonate (L), was synthesized and used for the extraction and separation of gallium and indium from chloride solution. The maximum separation factors SFGa/In reached 995, higher than those of its analogues Cextrant 230 (SFGa/In = 471) and BEADP (SFGa/In = 201) under optimal acidity conditions. The extracted complexes were identified as HGaCl4L2 and InCl3L2. The extraction reactions of gallium and indium were both endothermic. The loading capacities of 30 vol% L for Ga and In were 32.9 g/L and 25.2 g/L, respectively. Gallium and indium loaded in the organic phase can be effectively stripped by distilled water, H2SO4, and HNO3. A process was developed for the separation and purification of gallium, with Ga2O3 purity increasing from 98.4% to 99.97% and a yield of 92.5%.
Article
Chemistry, Analytical
Suzan S. Taha, Diyar S. Ali, Rebwar O. Hassan, Hazha Omar Othman, Slim Smaoui
Summary: Both cloud point extraction and spectrophotometry, as well as cloud point extraction and spectrofluorometry, were developed for sensitive and selective identification and measurement of iron. These methods demonstrate good analytical performance and have been successfully applied in biological samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Anton S. Pozdeev, Alexander I. Boldyrev
Summary: We investigated the structure evolution of Group 13 hydrides using density functional theory (DFT) and ab initio quantum chemistry methods. The research involved analyzing the structures of X2H4 (X = B, Al, Ga, In, Tl) and BAlH4, AlGaH4, GaInH4, and InTlH4 stoichiometries. The findings showed that all global minimum structures exhibited multicenter electron bonds, with a more significant difference observed between the boron and aluminum stoichiometries compared to other pairs. The study also revealed the prevalence of classical 2c-2e bonds over multicenter bonds for heavier elements in the evolution of Group 13 hydride structure.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Die Hu, Baozhong Ma, Xiang Li, Yingwei Lv, Wenjuan Zhang, Yongqiang Chen, Chengyan Wang
Summary: A scheme based on oxidative roasting-leaching-extraction is proposed to recover Cu, In, Ga, and Se from spent CIGS materials. The process involves roasting, leaching, solvent extraction, and stripping to achieve efficient recovery and separation of these valuable metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Nuket Kartal Temel, Mehtap Copur
Summary: In this study, an ultrasonic-assisted cloud point extraction (UA-CPE) method was developed for the determination of Co(II) in spices. The Co(II) contents of the samples were determined by UV-VIS after extraction and preconcentration. The optimized method achieved a LOD of 0.76 μg L-1 and a LOQ of 2.59 μg L-1 for Co(II), with a rectilinear calibration curve in the range of 1-10 and 10-210 μg L-1.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Chanju Park, Junyeong Kim, Heonbang Lee, Junmi Lee, Md Mobaidul Islam, Hansol Jeong, Jin Jang
Summary: This study presents a biaxially stretchable AM micro-LED display with liquid metal interconnects. The display can operate both in relaxed and stretched states up to 24%, and successfully displays characters A, D, R, and C through AM driving.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Analytical
Mais Al-Nidawi, Ozgur Ozalp, Usama Alshana, Mustafa Soylak
Summary: Synergistic cloud point microextraction (SCPME) simplifies and accelerates traditional cloud point extraction (CPE) by using medium- to long-chain alcohols to reduce the cloud point temperature of the surfactant. SCPME-UV/Vis method was successfully applied for the extraction and determination of curcumin in food samples.
ANALYTICAL LETTERS
(2023)
Review
Chemistry, Analytical
Swadesh Mandal, Susanta Lahiri
Summary: Cloud point extraction (CPE) is a greener alternative to conventional separation techniques in the field of analytical chemistry. This article provides an overview of various aspects of CPE and its recent developments, focusing on the extraction and speciation of metal ions and anionic species. The article also briefly discusses the extraction and determination of nanoparticles by CPE.
MICROCHEMICAL JOURNAL
(2022)
Review
Nutrition & Dietetics
Ingrid Hagarova, Lucia Nermcek
Summary: This article introduces cloud point extraction, a technique often used in conjunction with spectrometric analysis to efficiently separate and quantify selenium in food. It is of particular importance for understanding selenium levels in different food products.
Article
Spectroscopy
Noorbasha N. Meeravali, K. Madhavi, A. C. Sahayam
Summary: A rapid analytical procedure for the separation and pre-concentration of ultra trace level thallium from plant samples using high resolution continuum source electrothermal atomic absorption spectrometry has been described. The method involves the extraction of ionic thallium spices from the nitric acid digests of plant leaves using Triton X-100 micelles, HCl, and NaCl. The procedure has been optimized and the accuracy of the method has been verified by analyzing certified reference materials. The method has also been successfully applied to real plant samples collected near thermal power plants and industrial areas.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Xinming Pu, Shu Gan, Xiping Yuan, Raobo Li
Summary: This study combines the advantages of different point cloud acquisition methods to provide high-quality basic data for structure measurement and modeling. By analyzing the mechanisms of different sensors, the integrity of point cloud data, and the single-point geometric characteristics, the advantages and disadvantages of different methods for collecting point clouds of special-shaped structures are compared. Additionally, a point cloud void repair technology based on TLS point cloud is proposed to generate high-quality basic point cloud data of special-shaped structures.
Article
Chemistry, Applied
Wael I. Mortada, Mohamed M. El-Defrawy, Eman Erfan, Hala A. El-Asmy
Summary: A preconcentration procedure based on cloud point extraction and back-extraction was developed for speciation of inorganic vanadium. The method involves the use of CPE technique, complex formation, and back-extraction steps to achieve the separation and determination of different vanadium species.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Construction & Building Technology
Guocheng Qin, Yin Zhou, Kaixin Hu, Daguang Han, Chunli Ying
Summary: This paper proposes a fully automatic method for reconstructing parameterized BIM using point clouds to address the problems encountered in industrialized bridge construction. Algorithms for bridge point cloud segmentation and extraction of geometric features are developed to improve the accuracy and reliability of the reconstructed BIM. The feasibility of the proposed method is evaluated and verified using both theoretical and actual bridge point clouds.
ADVANCES IN CIVIL ENGINEERING
(2021)
Review
Chemistry, Analytical
Wael Mortada
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Analytical
Wael Mortada, Sarah Alharthi
Summary: A dual-cloud point extraction process was developed for the enrichment of aluminum before analysis by ICP OES, demonstrating good analytical characteristics and high recoveries.
CURRENT ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Applied
Wael I. Mortada, Mohamed M. El-Defrawy, Eman Erfan, Hala A. El-Asmy
Summary: A preconcentration procedure based on cloud point extraction and back-extraction was developed for speciation of inorganic vanadium. The method involves the use of CPE technique, complex formation, and back-extraction steps to achieve the separation and determination of different vanadium species.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Applied
Wael Mortada, Kareem A. Nabieh, Tamer E. Helmy, Yasmeen G. Abou El-Reash
Summary: A composite material of MCM-41 silica modified with dithizone was synthesized using microwave radiation. This modified composite showed high adsorption capacity for Cu2+, Zn2+ and Pb2+ and was used for preconcentration prior to determination by FAAS. The optimized procedure exhibited satisfactory uptake characteristics with linear calibration graphs and low detection limits for the three metals. It was successfully applied for preconcentration of Cu2+, Zn2+ and Pb2+ in water and food samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
Wael Mortada, Aya A. Awad, Mohamed M. El-Defrawy, Magdi E. Khalifa
Summary: For the first time, air-assisted cloud point extraction (AACPE) was used to preconcentrate metal ions, specifically for the determination of samarium. The procedure involved complexing samarium ions with aluminon and extracting them into Triton X-114 in the presence of potassium iodide. The experimental factors affecting the extraction efficiency of AACPE were investigated and optimized. The method showed good linearity, high enrichment factor, and low detection limit, and was successfully used for samarium determination in wastewater and rock samples.
ANALYTICAL SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Wael I. I. Mortada
Summary: A quick, easy, and inexpensive method called dispersive liquid-liquid microextraction based on the solidification of floated organic drop (DLLME-SFOD) was studied for enriching palladium (Pd) and platinum (Pt) ions. The procedure involved injecting the extractant 1-undecanol and a dispersing solvent ethanol into an aqueous solution containing 2-mercaptobenzothiazole (2-MBT) and the analyte, followed by centrifugation to solidify the organic drop. The method demonstrated low detection limits and high enrichment factors for Pd(II) and Pt(II) ions, and was successfully applied to the analysis of water and road dust samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Hanan E. Zedan, Wael Mortada, Magdi E. Khalifa
Summary: Two extraction procedures (DLLME and DLLME-SFOD) were compared for the spectrophotometric determination of Fe(III). The results showed that DLLME-SFOD had better analytical performance than DLLME under the optimum conditions. Therefore, DLLME-SFOD could be considered as a simple, time-saving, and suitable preconcentration method for Fe(III) in conventional analytical laboratories.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Wael I. Mortada, Yasser Matter, Sherry M. Khater, Nashwa M. Barakat, Fatma M. El-Tantawy
Summary: This study aimed to investigate the effect of pomegranate juice (PJ) on cyclosporine-induced nephrotoxicity in rats. The results showed that the administration of cyclosporine caused significant alterations in plasma creatinine, blood urea nitrogen, creatinine clearance, kidney injury molecule-1, and neutrophil gelatinase-associated lipocalin levels. However, supplementation with PJ attenuated these alterations and prevented changes in histopathology, lipid peroxidation, and antioxidant enzymes induced by cyclosporine. Therefore, PJ has a protective effect against cyclosporine-induced nephrotoxicity through its antioxidant properties.
Article
Chemistry, Multidisciplinary
Ebaa Adnan Azooz, Mustafa Tuzen, Wael I. Mortada
Summary: In this study, an economical and green microextraction technique called AA-DLLME-SFO was used to separate Co(II), Pb(II), and Pd(II). The use of air agitation as a green co-factor addressed the drawbacks of previous techniques. The method achieved successful separation of the target metals with low detection limits and high preconcentration factors. The environmental friendliness of the approach was also evaluated using the GAPI and AGREE indices, revealing its sustainability.
Article
Environmental Sciences
Wael I. I. Mortada, Kareem A. A. Nabieh, Amr M. M. Abdelghany
Summary: Water pollution caused by urbanization and industrialization has negative impacts on human health. Adsorption is an efficient method to remove pollutants from contaminated water, and dolomite is a natural mineral that can be easily obtained in large quantities. This study investigated the applicability of dolomite for removing methylene blue (MB) from water using a surfactant-assisted procedure. The experimental conditions for the best removal of MB by dolomite were established through batch adsorption studies. The findings showed that dolomite effectively adsorbs MB and could be used as a cost-effective sorbent in wastewater treatment.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Chemistry, Analytical
Wael I. Mortada, Eslam A. Ghaith, A. B. Abdallah
Summary: A green and eco-friendly in-syringe vortex-assisted dispersive liquid-liquid microextraction method was developed for the separation of Cu2+ and V5+. The method achieved wide linear ranges, low detection limits, and high enrichment factors, making it suitable for the analysis of metal ions in food samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Spectroscopy
Wael I. Mortada, Hanan E. Zedan, Magdi E. Khalifa
Summary: An ion pair-based surfactant-assisted dispersive liquid-liquid microextraction with solidification of floating organic drop (IP-SA-DLLME-SFOD) method was developed for extraction of vanadium followed by spectrophotometric determination. Tannic acid (TA) and cetyl trimethylammonium bromide (CTAB) were used as complexing and ion-pairing agents, respectively. Under optimized conditions, the method showed good sensitivity, with low detection and quantification limits. The proposed method was successfully applied for spectrophotometric quantification of vanadium in fresh fruit juice samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Ghada G. El-Gamal, Wael I. Mortada, Mohamed M. Hassanien, Amr A. Ibrahim, Yasmeen G. Abou El-Reash
Summary: This article presents a new method for the separation of thorium ions using Morin to form a stable complex in an acidic medium, combined with SFODME technology. Under optimized conditions, the method showed low detection limits, good reproducibility, and successful application in phosphate rock and ceramic tile samples.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Multidisciplinary Sciences
Kareem A. Nabieh, Wael I. Mortada, Tamer E. Helmy, Ibrahim M. M. Kenawy, Yasmeen G. Abou El-Reash
Summary: The bio-matrix of rice husk was modified and used for preconcentration of Pd2+ prior flame atomic absorption spectrometric determination. The material was characterized and evaluated for its adsorption capacity under different parameters, achieving a maximum capacity at optimum conditions. The method showed good detection limits and dynamic analytical range, with the sorbent capable of regeneration for multiple cycles without significant reduction in adsorption capacity.
Article
Multidisciplinary Sciences
Ahmed F. Donia, Wael I. Mortada
Summary: This study analyzed the chemical composition of six tap water samples and one bottled Zamzam water sample, finding that all parameters were within WHO and EPA guidelines except for total dissolved solids (TDS), which exceeded EPA's non-enforceable limit. The study concluded that Zamzam water has acceptable chemical composition, but TDS levels exceeded EPA guidelines.
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)