Article
Energy & Fuels
Jianxun Wu, Weilai Zhang, Yuanfeng Wang, Yahe Zhang, Quan Shi
Summary: A series of novel carotenoid-derived non-thiadiamondoids cage organic sulfur compounds (OSCs) were identified from crude oil. Non-polar sulfur compounds were isolated using the methylation/demethylation method and characterized using FT-ICR MS and GC-MS. The cage OSCs were tentatively identified as 2-thiatricyclo[4.4.0.0<3.8>]decanes. These novel OSCs were found to be generated by biological sulfate reduction, providing new clues for the preservation of hydrocarbons in geological environments through sulfurization. The cage OSCs have the potential to be biomarkers for studying sedimentary environments.
Article
Energy & Fuels
Jianxun Wu, Chao Ma, Weilai Zhang, Weifeng Chang, Yahe Zhang, Quan Shi
Summary: In this study, molecular characterization of sulfur compounds in a whole crude oil was conducted using gas chromatography and mass spectrometry techniques. The crude oil was separated into different fractions and different sulfur compounds were identified and characterized. The study found that the type and content of sulfur compounds vary significantly among the different distillation fractions.
Article
Engineering, Chemical
Shuai Ma, Yunyun Li, Rigu Su, Jianxun Wu, Lingyuan Xie, Junshi Tang, Xusheng Wang, Jingjun Pan, Yuanfeng Wang, Quan Shi, Guangzhi Liao, Chunming Xu
Summary: The concentration of ketones in oxidized oils decreases with temperature, while aromatic ketones increase. These findings are important for understanding the oxidation process of crude oil and studying the combustion state of crude oil in the reservoir.
Article
Chemistry, Analytical
Jasmine Hertzog, Carole Garnier, Charlotte Mase, Sandra Mariette, Olivier Serve, Marie Hubert-Roux, Carlos Afonso, Pierre Giusti, Caroline Barrere-Mangote
Summary: This study utilized flash chromatography to fractionate bio-oil into four distinct fractions, and characterized these fractions using ultra-high-resolution mass spectrometry and nuclear magnetic resonance spectroscopy. Flash chromatography provided quantitative information that complemented the results from FT-ICR MS, and simplified the compositional analysis of bio-oil.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Energy & Fuels
Yunyun Li, Guangzhi Liao, Zhengmao Wang, Rigu Su, Shuai Ma, Hui Zhang, Liangang Wang, Xusheng Wang, Jingjun Pan, Quan Shi
Summary: This study investigated the molecular changes associated with coke formation during in-situ combustion (ISC) by conducting a thermal oxidation experiment on heavy crude oil. The results showed that oxidation and thermal cracking are both important reactions in the simulated ISC process, and the molecular composition provides valuable insights into the behavior of coke formation from crude oil.
Article
Chemistry, Physical
Filomena Lelario, Giuliana Bianco, Sabino Aurelio Bufo, Laura Scrano
Summary: This study investigated the fate of Italian crude oil under simulated solar irradiation, as well as the transformations induced by different advanced oxidation processes (AOPs) for oil-polluted water remediation. The analysis revealed significant modifications in the composition of the crude oil after light irradiation, including the formation of potentially toxic substances. Remediation methods resulted in oil oxidation and changes in the non-polar compounds present in the water-soluble oil fraction.
Article
Geochemistry & Geophysics
Yankuan Tian, Bin Jiang, Jian Chen, Zhao-Wen Zhan, Chao Yang, Yan-Rong Zou, Ping'an Peng
Summary: This study investigated the released heteroatomic compounds from asphaltene-bound fractions of crude oils and their compositions and distributions provide insights into the origins and processes of hydrocarbon accumulation.
ORGANIC GEOCHEMISTRY
(2022)
Article
Engineering, Environmental
Roberto Palos, Timo Kekalainen, Frank Duodu, Alazne Gutierrez, Jose M. Arandes, Janne Janis, Pedro Castano
Summary: The composition of tire pyrolysis oil blended with light cycle oil and its hydrotreated products were studied using analytical techniques, showing that hydrotreating can minimize the effects of higher boiling point species and oxygenates originating from the pyrolysis of tires, while improving the quality and quantity of gasoline and diesel fractions.
Article
Energy & Fuels
Xiangchun Chang, Tianjiao Liu, Bingbing Shi, Zhongquan Liu, Pengfei Zhang, Youde Xu, Guo Chen
Summary: In this study, the geochemical analysis of six biodegraded oils using FT-ICR MS revealed the enrichment of nitrogen, sulphur, and oxygen-bearing compounds that are resistant to biodegradation. The study also found the generation of carboxylic acids and the increasing trend of higher cyclic naphthenic acids with the biodegradation process. The newly developed proxies of NSO compounds showed good agreement with existing biodegradation indicators, confirming the effectiveness of ESI(-) FT-ICR MS in distinguishing biodegraded oils.
Article
Chemistry, Applied
Zengtong Deng, Yuanjing Chen, Song Hu, Sheng Su, Long Jiang, Jun Xu, Kai Xu, Yi Wang, Jun Xiang
Summary: Heavy components in bio-oils pose challenges for their utilization, but their content can be reduced through catalytic pyrolysis. In-situ catalysis at high temperatures can further suppress the polymerization of heavy components.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Yi Qiu, Dian Zhong, Kuo Zeng, Jun Li, Gilles Flamant, Ange Nzihou, Haiping Yang, Hanping Chen
Summary: This study investigated the influence of cellulose-lignin interaction on the evolution of biomass pyrolysis bio-oil heavy components. The results showed that the interaction between cellulose and lignin promoted the generation of lipids and unsaturated hydrocarbons while inhibiting the generation of condensed aromatic hydrocarbons, phenolic species, and sugars.
Article
Engineering, Environmental
Dennys Leyva, Muhammad Usman Tariq, Rudolf Jaffe, Fahad Saeed, Francisco Fernandez-Lima
Summary: Dissolved Organic Matter (DOM) is a significant component of the global carbon cycle. This study used high-resolution mobility and ultrahigh-resolution Fourier transform ion cyclotron resonance tandem mass spectrometry (FT-ICR MS/MS) to compare four solid phase extracted (SPE) DOM samples from three freshwater ecosystems. Comparison of structural families revealed dissimilarities in the structural footprint of the samples. Inclusion of isomeric content in the structural family description suggested additional transformation pathways and/or source variations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Analytical
Clarisse Gosset-Erard, Frederic Aubriet, Emmanuelle Leize-Wagner, Yannis-Nicolas Francois, Patrick Chaimbault
Summary: This review provides an overview of the online hyphenation of FT-ICR MS with separation methods, highlighting its advantages and challenges. While FT-ICR MS requires time to achieve high resolving power and accuracy, chromatography and electrophoresis offer transient peaks. The combination of these techniques balances their strengths and weaknesses, making it valuable for applications such as untargeted Omics. Although implementing FT-ICR MS with online separation methods can be challenging, it has shown unparalleled results and raises questions about its future with advancing technology.
Article
Energy & Fuels
Ming Yuan, Songqi Pan, Zhenhua Jing, Stefanie Poetz, Quan Shi, Yuanjia Han, Caineng Zou
Summary: Oil migration affects the reliability of molecular maturity parameters. Analysis of samples from a shaly sequence subjected to intrasource migration showed higher hydrocarbon maturity parameters in siltstones compared to shales. In contrast, non-hydrocarbons indicated lower maturity in siltstones due to smaller molecular cores, longer alkyl side chains, and higher enrichment of Ox species. These differences are attributed to petroleum migration, with hydrocarbons and non-hydrocarbons having different migration behaviors based on their properties.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Energy & Fuels
Hanjing Zhang, Sumei Li
Summary: This study characterized saline lacustrine immature oils and freshwater lacustrine mature oils using positive-ion electrospray ionization FT-ICR MS. The results showed a genetic relationship between organosulfur compounds (OSCs) and their precursors, and certain ratios were found to be sensitive indicators of organofacies. Newly developed maturity indices accurately assessed the thermal maturity of lower maturity oils.
Article
Energy & Fuels
Gleicielle Tozzi Wurzler, Thamara Andrade Barra, Vinicius Barreto Pereira, Rodolpho Caeiro dos Santos, Alexandre de Oliveira Gomes, Gabriela Vanini, Debora de Almeida Azevedo
Summary: This study characterized naphthenic acids in Brazilian crude oils using high-resolution mass spectrometry and comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry. The results showed variations in the types and concentrations of naphthenic acids in different crude oil samples, indicating that TAN values cannot accurately represent the actual quantification of acids.
Article
Geochemistry & Geophysics
Vinicius B. Pereira, Alexander A. Lopes, Marco Aurelio Dal Sasso, Leonardo Amora-Nogueira, Thairiny Fonseca, Humberto Marotta, Renato C. Cordeiro, Debora A. Azevedo
Summary: This study investigates the sediment composition and methanogenesis in a clearwater floodplain lake in the Brazilian Amazon. The findings suggest that the biomass stocks in these lakes may be sensitive to global warming due to the predominance of terrestrial organic matter and intense microbial contribution.
APPLIED GEOCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Leandro Alves de Souza, Priscilla Magalhaes de Souza, Gleicielle Tozzi Wurzler, Victor Teixeira da Silva, Debora A. Azevedo, Robert Wojcieszak, Fabio Bellot Noronha
Summary: This study investigated the depolymerization reactions of cellulose and hemicellulose during the fractionation of lignocellulosic biomass using an isopropyl alcohol/water mixture and the Raney-Ni catalyst. Model molecules and the fractionation of sugar cane bagasse were used to understand the role of the catalyst and propose reaction pathways. The results showed that the selectivity to desired products could be tuned by balancing hydrogenation and hydro-genolysis capacity, and the support of the catalyst played an important role in product distribution.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Environmental Sciences
Priscila Schroeder, Vinicius Barreto Pereira, Alexander Ventura, Juliana Andrade, Monique Kort-Kamp Figueiredo, Evelize Folly das Chagas, Debora de Almeida Azevedo, Gilberto Alves Romeiro, Raquel Vieira Santana da Silva
Summary: This work examines the valorization of passion fruit seed cake by slow pyrolysis, focusing on the organic compounds in the liquid bioproducts and their potential as biopesticides. The study finds that the aqueous phase of the pyrolysis process shows promising biopesticide activity, with a higher proportion of nitrogenous compounds. Furthermore, the presence of nitrogen derivatives and aromatic hydrocarbons in the bio-oil may contribute to its biopesticide effect.
WASTE AND BIOMASS VALORIZATION
(2023)
Review
Chemistry, Analytical
Nayara Araujo dos Santos, Maira Kerpel dos Santos, Jose Almirall, Wanderson Roma
Summary: Cannabinomics is a scientific field that focuses on studying the natural compounds found in the Cannabis plant, including cannabinoids, for various applications such as medicine, bioconstruction, materials, and biofuels. However, due to the complex chemical nature and diverse constituents of the Cannabis plant, there are still numerous unexplored applications. Therefore, further studies and advancements in analytical instrumentation and identification methods are crucial for better understanding its composition and organization.
FORENSIC CHEMISTRY
(2023)
Article
Environmental Sciences
Barbara D. Lima, Laercio L. Martins, Vinicius B. Pereira, Danielle M. M. Franco, Ignes R. dos Santos, Jandyson M. Santos, Boniek G. Vaz, Debora A. Azevedo, Georgiana F. da Cruz
Summary: Through multiple analytical techniques on two samples collected in Pernambuco in 2019 and 2021, it was found that they have similar saturated biomarkers and triaromatic steroid ratios, indicating they are from the same spilled source. The degradation of n-alkanes, isoprenoids, and cycloalkanes was extensive due to evaporation, photooxidation, and/or biodegradation processes, while less alkylated PAHs were more biodegraded than the more alkylated ones. This was supported by the formation of mono and dicarboxylic acids assessed by GC x GC-TOFMS ESI(-) FT-ICR MS techniques. Three ratios were proposed based on ESI(-) FT-ICR MS results to evaluate the progress of the biodegradation process over time: Ox>2/O, SOx/SO, SOx/N.
MARINE POLLUTION BULLETIN
(2023)
Article
Chemistry, Analytical
Nayara Araujo dos Santos, Wanderson Romao
Summary: Cannabis is a widely distributed plant that has been used for food, textiles, and medicinal purposes throughout history. Despite its long history of use, its chemical complexity has limited our understanding of its full potential. This review article aims to provide a comprehensive overview of Cannabis science, including its composition, classification, the synthesis of its main constituents (cannabinoids), its contributions to medicine, and its recreational use. By synthesizing these main topics, readers can gain a holistic view of Cannabis.
FORENSIC CHEMISTRY
(2023)
Article
Energy & Fuels
Jarlene da C. Silva, Lindamara M. Souza, Victor R. Fonseca, Wanderson Romao, Watson Loh, Elizabete F. Lucas
Summary: The identification of petroleum molecules or classes that stabilize water-in-oil emulsions is crucial for efficient treatment methods. This study aimed to obtain fractions of interfacially active and non-interfacially active molecules from asphaltic petroleum samples and compare them to a fraction isolated from the same sample. Various spectroscopic and analytical techniques were used to characterize the samples, and the results indicated the presence of both maltenes and asphaltenes at the water-oil interface.
Article
Chemistry, Analytical
Gabriely S. Folli, Ellisson H. de Paulo, Francine D. Santos, Marcia H. C. Nascimento, Pedro H. P. da Cunha, Wanderson Romao, Paulo R. Filgueiras
Summary: The Standard Practices for Infrared Multivariate Quantitative Analysis (ASTM E1655) provide guidelines for determining physicochemical properties using multivariate calibration techniques. Partial least squares (PLS) is the most commonly used method due to its excellent prediction capabilities. This study evaluates the multicollinearity of different analytical techniques and suggests that PLS may be more effective with NIR, MIR, and H-1 NMR data.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Multidisciplinary
Juliana B. Ferreira, Nayara A. dos Santos, Keyller B. Borges, Nathalia S. Conceicao, Clara S. D. Baptista, Hildegardo S. Franca, Wanderson Romao
Summary: This study presents the synthesis and characterization of hybrid molecularly imprinted polymers (MIPs) for extracting cocaine in biological samples. MIPs synthesized using caffeine and cocaine as templates were compared, and it was found that MIPs had better cocaine extraction. Restricted access molecularly imprinted polymers (RAMIPs) were also produced for comparison. The optimized method accurately quantified cocaine in urine samples.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Fernando F. Barcelos, Thammyres A. Alves, Poliana A. R. Gazolla, Robson Ricardo Teixeira, Vagner T. de Queiroz, Milene M. Praca-fontes, Pedro A. B. Morais, Victor R. Fonseca, Wanderson Romao, Valdemar Lacerda Jr, Rodrigo Scherer, Adilson Costa
Summary: The synthesis of glycerol-fluorinated triazole derivatives and their phytotoxic and cytogenotoxic activities were evaluated. These derivatives showed effects on phytotoxic and cytogenotoxic parameters with varying degrees of efficiency. Some compounds exhibited pre-emergent inhibition behavior while all compounds showed post-emergent effects on weed control. The derivatives have potential for the development of new chemicals for weed control.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)
Article
Multidisciplinary Sciences
Luciana G. P. Sodre, Laercio L. Martins, Lorraine Louise G. C. De Araujo, Danielle M. M. Franco, Boniek G. Vaz, Wanderson Romao, Valeria M. Merzel, Georgiana F. da Cruz
Summary: This study investigates the effects of biosurfactants and brine injection on the recovered petroleum composition and geochemical interpretation. Biosurfactants mainly impact low molecular weight aromatic compounds, while saturated compounds are less affected in terms of geochemical parameters.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Chemistry, Multidisciplinary
Laura Figueroa, Nayara dos Santos, Pedro Santiago, Wanderson Romao, Valdemar Lacerda Junior, Javier Ellena, Ana Micheletti, Warley Borges
Summary: Multi-drug-resistant bacteria are a global health concern that requires the discovery of new antibacterial compounds. In this study, a series of paeonol triazole and ether derivatives were synthesized using copper(I)-catalyzed reactions and evaluated for their antibacterial activity. The results showed that these reactions were effective in producing high-yield compounds with potential bioactivity.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Agronomy
Jessica Rodrigues Dalazen, Gustavo Pereira Valani, Henrique Duarte Vieira, Jose Cochicho Ramalho, Valdemar Lacerda Jr, Wanderson Romao, Fabio Luiz Partelli
Summary: The accumulation of nutrients in different parts of Piper nigrum 'Bragantina' spikes at different ripening stages was determined in this study. The findings indicate the importance of considering nutrient accumulation in crop development for fertilization planning and nutrient balancing.
Article
Chemistry, Multidisciplinary
Angela M. A. Lima, Wenderson T. de Paula, Iris C. H. L. Leite, Poliana A. R. Gazolla, Lucas M. de Abreu, Victor R. Fonseca, Wanderson Romao, Valdemar Lacerda Jr, Vagner T. de Queiroz, Robson R. Teixeira, Adilson Costaa
Summary: This study synthesized eugenol-fluorinated triazole derivatives with fungicidal activity, and compound 3d showed the best inhibitory activity, which may serve as a template for further structural modifications.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
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)