There is an urgent need to prepare advanced functional materials for extraction and enrichment of trace organic pollutants from different samples. In this work, two novel phosphate-functionalized porous organic polymers (DBP-POP and DPP-POP) were synthesized for the first time. Compared with phosphate-free counterpart, both phosphate-functionalized POPs showed excellent adsorption performance for the neonicotinoids due to the hydrogen bonding, π-π interaction and hydrophobic interaction. For ease of separating the sorbent from solution, magnetic DBP-POP (M-DBP-POP) was further prepared as sorbent to extract neonicotinoids from environmental water and lemon juice samples prior to their determination by high performance liquid chromatography-ultraviolet detection. Under optimal conditions, the detection limits (S/N = 3) of the method were 0.01-0.08 ng mL for water and 0.03-0.10 ng mL for lemon juice. The recoveries were in the range of 80.0% to 113.0% with relative standard deviation less than 10.6%. This work demonstrated the feasibility of phosphate-functionalized POPs for adsorption applications.
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http://dx.doi.org/10.1016/j.chroma.2023.464221 | DOI Listing |
Int J Biol Macromol
January 2025
Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
This study focuses on the development of an efficient membrane-based clarification process to enhance the performance of subsequent ultrafiltration and produce high-quality sweet lime juice. A range of casting solutions were prepared using a blend of pore-forming polymers, including polyvinylpyrrolidone (PVP), polyvinylidene fluoride (PVDF), and cellulose acetate (CA), dissolved in dimethylformamide (DMF) solvent through the phase inversion technique. To further enhance the membrane's performance, four biopolymers poly (lactic acid) (PLA), xanthan gum, chitosan, and gelatin were incorporated, with and without clay, to refine its structure, porosity, and surface properties.
View Article and Find Full Text PDFAntioxidants (Basel)
December 2024
Dipartimento di Chimica e Tecnologie Chimiche, Università Della Calabria, Via Pietro Bucci Cubo 12/D, I-87030 Rende, CS, Italy.
A novel and efficient analytical protocol based on paper spray tandem mass spectrometry was developed for the determination of isomeric -glycoside flavanones in citrus juices and beverages. This approach significantly reduces sample preparation time and solvent consumption compared to traditional chromatographic techniques. By exploiting the unique fragmentation patterns of these compounds, accurate quantification of both diglycosides and their individual isomers (neohesperidoside and rutinose derivatives) was achieved.
View Article and Find Full Text PDFBiol Trace Elem Res
January 2025
Faculty of Science, Department of Chemistry, University of Sarajevo, Sarajevo, Bosnia and Herzegovina.
The total content of heavy metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in chamomile sample, metals content in water chamomile infusions and water infusions with additions of ascorbic acid and lemon juice at different temperatures (70, 80, and 100 °C) and steeping times (3, 5, and 7 min), were determined. The content of heavy metals was determined by flame atomic absorption spectrometry (FAAS). Mean total concentrations of Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn were 0.
View Article and Find Full Text PDFSci Total Environ
January 2025
Social Development and Health Promotion Research Center, Health Policy and Promotion Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Electronic address:
Nowadays, polyethylene terephthalate (PET) bottles are widely used for packaging drinks and food. However, concerns have been raised about the possible migration of harmful chemicals, particularly phthalates, from these containers into their contents. Therefore, this study investigates the effects of sunlight exposure and PET bottle reuse on phthalate migration, focusing on three common phthalates: bis(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and benzyl butyl phthalate (BBP).
View Article and Find Full Text PDFPolymers (Basel)
December 2024
School of Engineering and Sciences, Tecnologico de Monterrey, Atizapan de Zaragoza C.P. 52926, Estado de Mexico, Mexico.
Currently, there is a rush to develop green polymeric films such as biodegradable chitosan (CH) films to control and prevent plastic pollution from degrading the environment. This study reports a novel and sustainable green approach to the development of CH films using lemon juice (LJ) and lemon peel extract (LPE), the latter to dilute the LJ. The LPE was also utilized for the synthesis of ZnFeO nanoparticles (NPs), adding to this work's novelty.
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