Article
Chemistry, Analytical
Alan L. Vieira, Edilene C. Ferreira, Silvana R. Oliveira, Fernando Barbosa, Jose A. Gomes Neto
Summary: Dried Blood Spot (DBS) was evaluated as a solid sampling strategy for Fe and Zn determination in blood samples using Solid Sampling High-Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry (SS HR-CS GF AAS). Results showed good correlation between the area of DBS and blood volume, as well as improved stability and peak profile of Zn with the use of chemical modifier. The proposed method provided accurate Fe and Zn determination results with a high sample throughput.
MICROCHEMICAL JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Zhihong Zhang, Haowen Yang, Zhaoyang Song
Summary: In this study, a membrane efficiency model of clay under multiionic conditions is proposed, which is based on the mineral-pore fluid interactions and triple-layer model. The model is validated by comparing the predicted and measured results, showing accurate determination of membrane efficiency. The proposed model can provide a more accurate theoretical tool to assess the performance of clay barriers.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Analytical
Lianfa Song
Summary: By adding hydraulic pressure to the feed side of the membrane in the PRO process, the production rate of salinity gradient energy can be significantly increased. The osmotic pressure of the draw solution is mainly reserved to increase the hydraulic pressure of the permeate, resulting in higher power density.
Review
Construction & Building Technology
Priyanka Pradhan, Soumyaranjan Panda, Suraj Kumar Parhi, Saubhagya Kumar Panigrahi
Summary: Geopolymer concrete is a new type of concrete formed by the polymerization process between aluminosilicate materials and alkali-activated solution. It does not rely on the conventional hydration process and can protect the environment. However, its use is limited due to the lack of knowledge about the factors affecting its formation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Green & Sustainable Science & Technology
Pengfei Ren, Tung-Chai Ling, Kim Hung Mo
Summary: Artificial aggregates are man-made construction material whose properties greatly depend on the manufacturing process and raw materials used. Different hardening methods like sintering, cold bonding, accelerated carbonation, and alkaline activation can significantly impact the final properties of the aggregates. Finer material fractions are required for granulation to increase pelletization efficiency and strength, with sintering generally yielding better physical and mechanical properties.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Yixiang Li, Yang Liu, Yanmei Yang, Yong-Qiang Li, Mingwen Zhao, Weifeng Li, Yuanyuan Qu
Summary: Through molecular dynamics simulations, it was shown that the newly synthesized layer-stacked phosphorus carbide membrane can serve as a highly efficient filter for water desalination. The membrane exhibits high water permeability and salt blocking capability, with anisotropic water permeability attributed to differences in ionic rejection and water transport energy barriers.
Article
Chemistry, Multidisciplinary
Bita Forghani, Ann-Dorit Moltke Sorensen, Gustaf Fredeus, Kenneth Skaaning, Johan Johannesson, Jens J. Sloth, Ingrid Undeland
Summary: The study analyzed the composition of shrimp boiling water (SBW) and shrimp peeling water (SPW) generated during shrimp processing over a 13 month period. SBW contained high levels of protein, total fatty acids, and astaxanthin esters, while SPW had lower levels of these components. Both waters were found to be stable for storage and could potentially be utilized in food or feed products, providing valuable nutritional elements.
Article
Thermodynamics
Shirin Niroomand, Melanie T. Fauchoux, Carey J. Simonson
Summary: This paper explores the process of frost formation on a semipermeable membrane, highlighting a delay in the freezing of dropwise condensates and slower spread of frost due to water vapour transfer through the membrane. Additionally, the structure of the frost layer on the semipermeable membrane differs significantly from that on impermeable surfaces, showcasing irregular hexagonal ice crystal columns. The delay in frosting on a semipermeable membrane offers potential benefits for membrane fabrication in low-temperature applications.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Agricultural Engineering
Chen Fang, Ya Su, Yuying Liang, Lujia Han, Xueqin He, Guangqun Huang
Summary: This study investigated the microbial mechanism of reducing methane production during aerobic composting of solid dairy manure with a membrane cover. The results showed that the semipermeable membrane cover improved oxygen utilization rate and inhibited the growth of anaerobic bacteria and archaea. The acetoclastic methanogenesis module decreased by 0.58%, 0.05%, and 0.04% in the MC + AC, AC, and SC groups, respectively. The cdhC gene in the acetoclastic pathway was decreased by 65.51% only in the MC + AC group. The changes in methane metabolism pathways resulted in a 27.48% lower average methane concentration in the MC + AC group compared to the SC group. Therefore, the semipermeable membrane cover strategy effectively reduces methane production during dairy manure aerobic composting by restricting methane generation through the acetoclastic pathway.
BIORESOURCE TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Xinyi Zhang, Michael Schwarze, Reinhard Schomaecker, Roel van de Krol, Fatwa F. Abdi
Summary: Researchers propose coupling photoelectrochemical water splitting with the hydrogenation of chemicals to co-produce hydrogen and methyl succinic acid. They found that using 2% of the generated hydrogen for the conversion of itaconic acid to methyl succinic acid can achieve energy breakeven. This coupled reaction not only increases the viability of photoelectrochemical water splitting but also reduces the carbon emissions from chemical production.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Huifeng Chang, Fan Yang, He Bai, Zengting Lu, Chenghong Xing, Xueyan Dai, Wengen Wan, Shuxian Liao, Huabin Cao
Summary: Accumulation of heavy metals molybdenum and cadmium in the liver can lead to damage and inflammation in the cells, causing hepatotoxicity. The study investigated the effects of molybdenum and/or cadmium on sheep hepatocytes by examining the relationship between mitochondria-associated endoplasmic reticulum membrane (MAM) and NLRP3 inflammasome. The results showed that exposure to molybdenum and/or cadmium increased lactate dehydrogenase and nitric oxide levels, disrupted cellular calcium homeostasis, and induced inflammation. Inhibiting IP3R alleviated NLRP3 inflammasome production induced by molybdenum and cadmium.
CHEMICO-BIOLOGICAL INTERACTIONS
(2023)
Article
Environmental Sciences
Zhaoyang Song, Changfu Wei, Guoqing Cai, Zhihong Zhang, Xiuli Du
Summary: A new method for evaluating the membrane efficiency coefficient of clay is proposed in this study, considering the effect of fixed charges on the mineral surfaces. The method calculates the ionic concentration of pore water and the Donnan osmotic pressure based on the activity of water. Comparison with the van't Hoff equation shows that if skeletal deformation is considered, the proposed model yields larger membrane coefficients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yingjin Song, Ruiyi Li, Yuxin Wang, Yu Hou, Guanyi Chen, Beibei Yan, Zhanjun Cheng, Lan Mu
Summary: Semipermeable membrane-covered composting improves the humification process and bacterial evolution patterns. It enhances the content and degree of polymerization of humic acid. The membrane covering affects the bacterial community, especially during the thermophilic period. By altering the physicochemical properties, membrane covering influences the composition of bacterial communities. It activates specific bacterial genera to participate in the formation of humic substances, promoting the formation and structural complexity of humic substances.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Alessandro Cosenza, Giovanni Campisi, Francesco Giacalone, Serena Randazzo, Andrea Cipollina, Alessandro Tamburini, Giorgio Micale
Summary: Wastewaters generated by crude oil extraction processes, known as produced waters (PWs), are complex solutions containing organic compounds and high salinity. Reverse electrodialysis (RED) technology was investigated for energy generation from these PWs, demonstrating a positive net power density for up to 18 days of continuous operation. Anti-fouling strategies were employed to tackle performance degradation caused by fouling phenomena.
Article
Biochemistry & Molecular Biology
Ondrej Zverina, Ondrej Venclicek, Jan Kuta, Pavel Coufalik, Ingrid Hagarova, Kristian Brat
Summary: This study developed a method for determining platinum content in pleural effusions in clinical analysis, to deepen the understanding of platinum concentration dynamics during cytostatic therapy. Results showed different concentration dynamics of platinum in intrapleural fluid in samples collected at different time points.
JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY
(2021)
Article
Energy & Fuels
Adriana Fernandez Campos, Alessandra R. Cassella, Ricardo J. Cassella
Article
Chemistry, Analytical
Jeferson Alves Barreto, Rosivan dos Santos de Assis, Luana Bastos Santos, Ricardo Jorgensen Cassella, Valfredo Azevedo Lemos
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Analytical
Grasielli C. de Oliveira, Priscila O. Vicentino, Ricardo J. Cassella, Yutao T. Xing, Eduardo A. Ponzio
Summary: The study introduced a composite electrode AGCE-BiF for the simultaneous determination of Cd2+ and Pb2+ in gasoline samples, with improved sensitivity through in situ modification with a bismuth film. The sensor exhibited satisfactory recoveries and precision, comparable to those obtained with FAAS.
Article
Chemistry, Analytical
Pamela S. M. Rocha, Graziela F. B. Cruz, Ricardo J. Cassella
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
(2020)
Article
Environmental Sciences
Aline D. Goncalves, Tayene G. Martins, Ricardo J. Cassella
Summary: The distribution and concentration of organic compounds in the environment have attracted great interest. Factors such as urbanization, population growth, and new technologies contribute to the increase in pollutant emissions, especially volatile organic compounds (VOCs). A semipermeable membrane device (SPMD) was developed for passive sampling of toluene and benzene in gas phase, which proved effective in identifying the analytes in indoor air.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Analytical
Pamela S. M. Rocha, Andre S. Araujo, Ricardo J. Cassella
Summary: This study developed a flow injection analysis system for online magnetic preconcentration and determination of Cd(II) in water by using L-glutamine functionalized Fe3O4 magnetic nanoparticles. The method showed good performance in the analysis of water samples, with accuracy validated through recovery tests. The developed method was compared to direct determination by graphite furnace atomic absorption spectrometry, and showed no statistical difference at a 95% confidence level.
Article
Environmental Sciences
Tayene G. Martins, Simone C. Chiapetta, Ricardo J. Cassella
Summary: Permethrin was extracted from fabrics using a detailed study and determined by UHPLC-DAD. The method showed satisfactory accuracy with extraction efficiency up to 95.2%, and the concentration of permethrin varied in different commercial fabric samples.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
(2021)
Article
Chemistry, Analytical
Valfredo Azevedo Lemos, Jeferson Alves Barreto, Luana Bastos Santos, Rosivan dos Santos de Assis, Cleber Galvao Novaes, Ricardo J. Cassella
Summary: Dispersive liquid-liquid microextraction (DLLME) is widely used for the separation and preconcentration of various chemical species, with some systems using a syringe as an extraction environment. This review discusses methods utilizing this approach, critical aspects like dispersion promotion, analytical characteristics, and the pros and cons of the methods, as well as future trends in in-syringe microextraction systems.
Article
Chemistry, Multidisciplinary
Aline Fernandes, Rafael Christian Chavez Rocha, Achilles Junqueira Bourdot Dutra, Tatiana Dillenburg Saint'Pierre, Ricardo Jorgensen Cassella
Summary: This study presents the development of a sample preparation method using MIEB for determination of Cu, Ni and Pb in diesel oils by GF AAS. The method showed good performance in analyzing commercial samples and consuming small amounts of sample and reagents.
REVISTA VIRTUAL DE QUIMICA
(2022)
Article
Chemistry, Multidisciplinary
Nicolle F. Robaina, Graziela F. B. Cruz, Ricardo J. Cassella
Summary: In this study, a microextraction method using dispersive liquid phase microextraction (DLPME) with chloroform was proposed for the determination of CdII in produced waters. The Cd-II ions were converted into a hydrophobic diethyldithiocarbamate (DDTC) complex, which was then extracted using chloroform. The Cd absorbance in the organic phase was measured by graphite furnace atomic absorption spectrometry (GF AAS).
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Juliana Menezes de Sousa, Graziela Fregonez Baptista Cruz, Luiza Gomes dos Santos, Ricardo J. Cassella
Summary: A separation/preconcentration method using APDC as a complexing agent and PUF as a sorbent was proposed for determining Cd(II) and Pb(II) in swimming pool waters. Optimal conditions were determined, and Cd(II) and Pb(II) were released from the solid phase using a microwave-assisted acid approach. The method was applied to swimming pool water samples, and the limits of detection and quantification were determined.
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
(2023)
Article
Chemistry, Analytical
Pamela S. M. Rocha, Andre S. Araujo, Ricardo J. Cassella
Summary: A single-vial methodology for the extraction and determination of mercury(II) in water samples was developed. The method showed good accuracy and interference suppression ability through optimization and evaluation of the method's performance.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Multidisciplinary
Thamiris Pereira, Ricardo J. Cassella
Summary: This work presents a simple and fast spectrophotometric method for determining the Fe content in diesel oil. The method involves the extraction of Fe using emulsion breaking and the classic reaction with 1,10-phenanthroline. The optimized extraction parameters and pH adjustment of the final solution were necessary for completing the colorimetric reaction. The method showed a low detection limit and was validated by comparison with graphite furnace atomic absorption spectrometry (GF AAS).
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Raquel V. S. Silva, Aline D. Goncalves, Jonas O. Vinhal, Ricardo J. Cassella, Rodolpho C. Santos, Marco Aurelio Dal Sasso, Bruno S. Peixoto, Luana P. Borba-Santos, Sonia Rozental, Debora A. Azevedo, Gilberto A. Romeiro
Summary: The study demonstrated the potential of utilizing castor seed cake, a by-product of castor oil extraction, for preparing adsorbent materials and antifungal agents, offering low-cost solutions for water treatment and environmental purification, particularly for water contaminated with methylene blue dye and areas with high fungal load.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Priscila O. Vicentino, Ricardo J. Cassella, Diego Leite, Martin Resano
Article
Chemistry, Analytical
Michel Rocha Baqueta, Augusto Cesar Costa-Santos, Ana Paula Rebellato, Gisele Marcondes Luz, Juliana Azevedo Lima Pallone, Federico Marini, Alexsandro Lara Teixeira, Douglas N. Rutledge, Patricia Valderrama
Summary: This study reports the essential element composition of new Brazilian Canephora coffees and applies chemometric tools for analysis. The results demonstrate the suitability of this method for origin and species discrimination based on the inorganic fraction of coffee.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mengjie Li, Jiapeng Wang, You Zhou, Yang Chen, Lingying Xia
Summary: A novel photoelectrochemical biosensor based on gold nanoparticles and specific structures was developed for highly sensitive detection of mercury ion. The multiple sandwich structures hindered electron supply and light harvesting, resulting in a weakened PEC signal, while the specific structures extinguished the PEC signal, enabling quantitative detection of Hg2+. The sensor exhibited high selectivity and stability, with potential applications in environmental detection, biological analysis, and medical research.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mohamed A. Korany, Rasha M. Youssef, Marwa A. A. Ragab, Mostafa A. Afify
Summary: A stability-indicating fit-for-purpose method was developed for the determination of HC, TL, and PS in syrup dosage form. The method successfully separated CL from THY and quantified the analytes using HPLC-DAD. The robustness of the method was assessed through statistical analysis and self-validation.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Lingling Lin, Minyu Li, Ping Li, Chenqing Ye, Huanglong Zhuang, Shaohuang Weng, Feng Chen
Summary: This study developed a highly sensitive and selective electrochemical sensor for simultaneous detection of dopamine and uric acid. The sensor exhibited excellent anti-interference and stability, and could accurately measure dopamine and uric acid in human urine samples.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Peifang Chen, Caiyun Jiang, Zhouping Wang, Hong-zhen Lian, Xiaoyuan Ma
Summary: In this study, a high-performance SERS-active aptasensor was successfully developed for the quantitative analysis of AFB1 in cereal grains, which is of great significance in the field of food safety.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
E. Abas, C. Marina-Montes, C. Perez-Marin, J. Puimedon, J. Anzano
Summary: This study conducted a comprehensive measurement of natural and anthropogenic radionuclides in soil, water, and air in different locations around Deception Island in Antarctica. The results revealed significant levels of 210Pb and anthropogenic 137Cs in soil samples near old human settlements and facilities, as well as detectable levels of 137Cs and 60Co in water samples from old hunting areas. The findings also suggested potential resuspension processes based on higher-than-expected air quality results.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Joao Franciso Allochio, Nayara A. dos Santos, Nathalia dos S. Conceicao, Clara S. D. Baptista, Keyller B. Borges, Valdemar Lacerda Jr, Wanderson Roma
Summary: This study developed a fiber spray ionization mass spectrometry (FSI-MS) method, which shows great potential in detecting illicit drugs. Compared with paper spray ionization mass spectrometry (PSI-MS), FSI-MS demonstrates higher sensitivity in COC detection.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Dina A. Ahmed, Ola G. Hussein, Mamdouh R. Rezk, Mohamed Abdelkawy, Yasmin Rostom
Summary: The main goal of this study was to develop two green chromatographic techniques, HPLC and TLC, for the determination of alcaftadine (ALF) in pharmaceutical formulation and biological samples. The developed HPLC technique showed high efficiency and minimal environmental impact, successfully identifying ALF in the presence of its degradate. The TLC method provided a stability indicating study for ALF and was determined to be safe, green, and eco-friendly.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Abdullah Taner Bisgin
Summary: A green, speedy, and handy method for separation and determination of four commonly used food colorants was established using vortex assisted sequential-simultaneous liquid phase micro-extraction (VA-SS-LPME). The method does not require any instrumental chromatographic techniques. The procedure includes sequential separation steps using different extractants and simultaneous UV-vis spectrophotometric determination steps. The method is environmentally friendly and applicable for determination of colorants in food and pharmaceuticals.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Yifan Zhang, Tong Zhang, Wenjing Ba, Li Liu, Yuan Rao, Xiaodan Zhang, Hanhan Zhang, Xiu Jin
Summary: This paper proposes a novel spectral transfer modelling method based on neural network architecture searching for the asymptomatic prediction of Akizuki pear cork spot disorder. The experiments show that the model by this method is more effective, achieving an accuracy of 82.61%.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: For the first time, a dispersive micro-solid phase extraction (D-mu SPE) based on graphene oxide was used for the ultrasensitive determination of Cd. With this method, Cd can be efficiently extracted from a mixture of alkali and alkaline earth metals without the need for an elution step. The combination of D-mu SPE and SAGD OES significantly reduces matrix effects and improves the tolerance of Cd to alkali metals. The method shows simplicity in the measurement system and the commercially available nanosorbent used.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
P. K. Fathima Anjila, G. R. Tharani, Anand Sundaramoorthy, Venkat Kumar Shanmugam, Karthikeyan Subramani, Shanmugavel Chinnathambi, Ganesh N. Pandian, Vimala Raghavan, Andrews Nirmala Grace, Singaravelu Ganesan, Mangaiyarkarasi Rajendiran
Summary: This work proposes a rapid and sensitive spectroscopic method for detecting melamine in food products using rare-earth Terbium-doped Graphene Quantum Dots (Tb-GQDs) synthesized by microwave and simple chemical conjugation methods. The synthesized Tb-GQDs show a spherical shape with a size of approximately 6 nm and a quantum yield of 52%. The maximum detection limit for melamine concentration in milk and milk products is found to be 0.31 μM. The dual emitting Tb-GQDs provide a sensitive and effective platform for real-time detection of melamine in food samples, particularly in milk, and show promising potential in the food industry.
MICROCHEMICAL JOURNAL
(2024)
Review
Chemistry, Analytical
Piyush Dey, Mandeep Kaur, Akhil Khajuria, Dilmeet Kaur, Manpreet Singh, Hema Kumari Alajangi, Neha Singla, Gurpal Singh, Ravi Pratap Barnwal
Summary: Environmental issues, such as the uncontrolled release of dangerous pollutants, have significant impacts on human health. Traditional methods for detecting pollutants require specialized personnel and equipment, but nanotechnology has improved the performance of biosensors. This article discusses the use of nanotechnology in pollutant detection and the associated techniques.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Sa Dong, Qiuyun Shi, Lingjun Guan, Yulong Wang, Pengyan Liu, Cunzheng Zhang, Jianguo Feng
Summary: In this study, a highly sensitive indirect competitive chemiluminescence enzyme immunoassay (icCLEIA) method was developed for the determination of sodium pentachlorophenolate (PCP-Na) and its metabolite pentachlorophenol (PCP). The method showed high specificity and affinity with a detection limit of 0.0032 ng/mL for PCP-Na and 0.0192 ng/mL for PCP. The method had no cross reaction with other chlorophenols compounds except for PCP. The average recoveries in chicken, pork and fish samples were 81.3-105.8% with low coefficient of variation (CV).
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Palaniappan Ilayaraja, Murugan Manivannan, Paramasivam Parthiban
Summary: Nirmatrelvir, an antiviral drug used for the treatment of COVID-19, has been recommended by the World Health Organization. We developed an optimized analytical method for the quantification of Nirmatrelvir and its products, with high sensitivity and a wide linear range. The method also meets the requirements for greenness evaluation.
MICROCHEMICAL JOURNAL
(2024)