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Preparation of Polyaniline Modified Cellulose Filter Paper and Its Application in Detecting 23 Per- and Polyfluoroalkyl Substances.
J Sep Sci
January 2025
Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, China.
Per- and polyfluoroalkyl substances (PFAS) are a widely used class of synthetic chemicals that pose a significant global environmental and health threat due to their persistent and bioaccumulation toxicity caused by strong C-F bonds in their structures. PFAS usually exist in trace concentrations in environmental water bodies, which poses great challenges for environmental analysis. In this study, environmentally friendly cellulose was modified with polyaniline through in situ oxidative polymerization, and used as the filter paper for solid-phase extracting 23 PFAS in water.
View Article and Find Full Text PDF[Research advance of solid-phase microextraction based on covalent organic framework materials].
Se Pu
February 2025
School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
Solid-phase microextraction (SPME) is a fast and simple sample preparation technique that enables the enrichment of analytes, and it is used in combination with other detection techniques to provide accurate and sensitive analytical methods. SPME is widely used in environmental monitoring, food safety, life analysis, biomedicine, and other applications. The extractive coating is the core of the SPME technique, and the properties of the extractive coating greatly influence extraction selectivity and efficiency, as well as the enrichment effect.
View Article and Find Full Text PDFCombination of atom transfer radical polymerization and alkyne-azide click-chemistry for the synthesis of phosphonic acid cation exchange materials.
J Chromatogr A
January 2025
Faculty of Chemistry, Analytical Chemistry, University of Marburg, Hans-Meerwein-Str. 4, Marburg 35043, Germany. Electronic address:
Phosphonic acid cation exchange materials (PCX) are synthesized by atom transfer radical polymerization (ATRP) followed by alkyne-azide click-chemistry. ATRP is used to synthesize polymeric chains of diethyl 4-vinylbenzylphosphonate with different chain lengths, which are covalently bonded to the surface of monodisperse polystyrene-divinylbenzene (PS/DVB) particles by click-chemistry. The functionalized particles are characterized by FIB-SEM, IR and Schoeniger combustion followed by chromatographic experiments.
View Article and Find Full Text PDFBroad-spectrum affinity chromatography of SARS-CoV-2 and Omicron vaccines from ligand screening to purification.
J Chromatogr A
January 2025
Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin 300350, China. Electronic address:
Emerging variants of SARS-CoV-2 pose great technological and regulatory challenges to vaccine manufacturing, especially in downstream processing. To address this dilemma, the development of broad-spectrum affinity chromatography for the purification of wild-type SARS-CoV-2 and its variants is crucial. We propose a comprehensive strategy to achieve this goal via the identification of high-affinity peptides by affinity selection of phage display and next-generation sequencing (NGS) and the evaluation of chromatographic performance.
View Article and Find Full Text PDFDevelopment and Application of a Comprehensive Non-targeted Screening Strategy for Fentanyl Analogues.
J Hazard Mater
January 2025
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610213, China; Key Laboratory of Monitoring and Assessment on Novel Food Raw Materials, State Administration for Market Regulation, Chengdu 611130, China. Electronic address:
The growing abuse of fentanyl and its analogues (FTNs) presents a substantial public health threat, prompting the introduction of regulatory controls by government authorities. Nevertheless, existing screening strategies for FTNs are primarily based on targeted or non-targeted approaches that utilize a limited set of mass spectrometry fragmentation data, which are far from meeting the needs of class scheduling. In this study, a comprehensive non-targeted screening strategy for FTNs was developed.
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