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http://dx.doi.org/10.1021/ac00232a731 | DOI Listing |
Anal Chem
January 2025
Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitaetsstr. 31, Regensburg 93053, Germany.
To ensure high quality of food and water, the identification of traces of pathogens is mandatory. Rapid nucleic acid-based tests shorten traditional detection times while maintaining low detection limits. Challenging is the loss of nucleic acids during necessary purification processes, since elution off solid surfaces is not efficient.
View Article and Find Full Text PDFJ Sep Sci
January 2025
Department of Analytical, Bioanalytical Sciences and Miniaturization (LSABM) Chemistry, Biology and Innovation (CBI), UMR CNRS-ESPCI Paris, ESPCI Paris, PSL University, CNRS, Paris, France.
In the context of the energy transition, European countries pursue the common goal of increasing the share of renewable gases (from anaerobic digestion, pyrogasification, and hydrothermal gasification for instance) in the gas mix. Although produced gases are mainly composed of methane after upgrading, impurities of various natures and quantities may also be present in the produced raw gases and still after upgrading, including volatile organic compounds (VOCs) at trace levels that may have an impact on different stages of the gas chain even at low concentrations. These new renewable and/or low-carbon gases imply the need to develop new analytical tools to deeply characterize them, and thus fully manage their integration into the gas value chain.
View Article and Find Full Text PDFMolecules
December 2024
Laboratório de Ciências Forenses e Psicológicas Egas Moniz, Molecular Pathology and Forensic Biochemistry Laboratory, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, Quinta da Granja, 2829-511 Almada, Portugal.
The present work reports the development, optimization, and validation, of a methodology to determine lidocaine, procaine, tetracaine, and benzocaine in urine matrices. Two extractive preconcentration techniques, solid-phase microextraction (SPME) LC Tips and bar adsorptive microextraction (BAμE), were studied and applied to the four target anesthetics, followed by gas chromatography-mass spectrometry (GC-MS) analysis. Several parameters that could affect microextraction and back-extraction were optimized using two different designs of experiments (Box-Behnken and full-factorial) to maximize extraction efficiency from aqueous media.
View Article and Find Full Text PDFACS Sens
January 2025
Sandia National Laboratories, Albuquerque, New Mexico 87185, United States.
Exhaled breath contains trace levels of volatile organic compounds (VOCs) that can reveal information about metabolic processes or pathogens in the body. These molecules can be used for medical diagnosis, but capturing and accurately measuring them is a significant challenge in chemical separations. A highly selective nanoporous sorbent can be used to capture target molecules from a breath sample and preconcentrate them for use in a detector.
View Article and Find Full Text PDFFood Chem
April 2025
Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkiye; Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkiye; Turkish Academy of Sciences (TUBA), Cankaya, Ankara, Turkiye; Khazar University Nano BioAnalytical Chemistry Center (NBAC), Mahsati Str 41, AZ-1096 Baku, Azerbaijan.
In this study, a green synthesis method for synthesizing a novel nanocomposite (CuO/g-C₃N₄/Fe₃O₄) utilizing renewable dragon fruit peels as the primary raw material was developed. Hydrothermal and thermal decomposition techniques were used for nanocomposite synthesis. This nanocomposite was subsequently employed for the separation and preconcentration of Cd(II) from various environments, including food and water samples.
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