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solidphaseextraction, etc ; adsorbents; adsorption; catalysts; chemical species; chlorophenols; food chemistry; high performance liquid chromatography; honey; polymers; porous media; Show all 11 Subjects
Abstract:
... A new carbazole-based spherical microporous polymer (Car-BDA-POP) was fabricated by employing 4,4′-biphenyldicarboxaldehyde (BDA) and carbazole as monomers via a one-step and non-metal catalyst synthetic approach. It was then explored as an adsorbent for solid-phase extraction (SPE) of some chlorophenols (CPs). Under the optimized extraction conditions, the established Car-BDA-POP-based SPE couple ...
solidphaseextraction, etc ; metabolites; metabolomics; urinalysis; urine; Show all 5 Subjects
Abstract:
... Parahydrogen hyperpolarization has been shown to enhance NMR sensitivity in urine analysis by several orders of magnitude if urine samples are prepared by solid phase extraction (SPE). We present a different approach, developed for minimal sample alteration before analysis. Removing SPE from the workflow allows to retain a wider range of metabolites and paves the way towards more universal hyperpo ...
solidphaseextraction, etc ; Solanaceae; humans; molecular imprinting; sorbents; Show all 5 Subjects
Abstract:
... Tropane alkaloids (TAs) are natural toxins produced by different plants, mainly from the Solanaceae family. The interest in TAs analysis is due to the serious cases of poisoning that are produced due to the presence of TA-producing plants in a variety of foods. For this reason, in recent years, different analytical methods have been reported for their control. However, the complexity of the matric ...
solidphaseextraction, etc ; carbon; hydrophobicity; rivers; sorbents; wastewater; zwitterions; Show all 7 Subjects
Abstract:
... Four novel mixed-mode zwitterionic silica-based functionalized with strong moieties sorbents were synthesized and evaluated through solid-phase extraction (SPE) to determine acidic and basic drugs in environmental water samples. All sorbents had the same functionalization: quaternary amine and sulfonic groups and C₁₈ chains so that hydrophobic and strong cationic exchange (SCX) and strong anionic ...
Maiara C. S. Paixão; Jessica Nardi; Charise D. Bertol; Natália Freddo; Bruna F. Vieira; Vitoria A. Rosano; Maria T. Friedrich; Luciana G. Rossato-Grando
solidphaseextraction, etc ; high performance liquid chromatography; sewage; wastewater; Show all 4 Subjects
Abstract:
... Methylphenidate (MPH) is an important emerging pollutant found in effluents and wastewater. Thus, we aimed to develop and validate a method for detection and quantitation of MPH residues in sewage through high performance liquid chromatography coupled with photodiode array detector (LC-PDA). Here we describe a selective, accurate, precise, and valid method for determination of MPH in sewage with a ...
solidphaseextraction, etc ; absorption; fluorides; fluorine; furnaces; methanol; soil; spectroscopy; Show all 8 Subjects
Abstract:
... Here, we describe an optimized fast and simple extraction method for the determination of per- and polyfluorinated alkyl substances (PFASs) in soils utilizing high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR–CS–GFMAS). To omit the bias of the solid phase extraction (SPE) step commonly used during the analysis of extractable organically bound fluorine (EOF) we ...
solidphaseextraction, etc ; adsorbents; adsorption; biochar; drugs; molecular imprinting; photochemistry; Show all 7 Subjects
Abstract:
... Molecularly imprinted polymers (MIPs) have aroused great attention as a new material for the removal or detection of pharmaceuticals and personal care products (PPCPs). However, it is not clear about the superiority and deficiency of MIPs in the process of removing or detecting PPCPs. Herein, we evaluated the performance of MIPs in the aspects of adsorption capacity, binding affinity, adsorption r ...
solidphaseextraction, etc ; carbon; cytokinins; food composition; fruiting; ionic liquids; strawberries; Show all 7 Subjects
Abstract:
... In the present document, we report a novel miniaturized dispersive solid-phase extraction based on carbon fibers functionalized with ionic liquid for the determination of multiple-phytohormones and investigation on temporal distribution of phytohormones during the development in strawberry. 1-(3-Aminopropyl)-3-methylimidazolium bromide was modified on the carbon fibers by using covalent functional ...
solidphaseextraction, etc ; gluconolactone; pollutants; shikimic acid; sorbitol; wastewater; wastewater treatment; Show all 7 Subjects
Abstract:
... This study aimed to investigate the ability of analyte protectants to enhance GC-MS signals and compensate matrix effects for a range of micropollutants in pure standard, effluent, and influent wastewater samples during analysis and detection. Wastewater samples were prepared for analysis using multilayer solid phase extraction for the purpose of extracting sample components with a broad range of ...
solidphaseextraction, etc ; chemical species; multiresidue analysis; pesticides; pollution; soil; stereoselectivity; Show all 7 Subjects
Abstract:
... Soil is a primary sink and reservoir for pesticides pollution and one of the priority objects in terms of pesticides safety guidelines. Pesticides’ analysis in soil is a field of research which is in constant development facing numerous challenges such as the increasing amount and variety of analytes and their combinations, as well as the increasing demand for faster, simpler, more accurate and mu ...
solidphaseextraction, etc ; biomarkers; environmental monitoring; enzymatic hydrolysis; humans; spectrometers; urine; Show all 7 Subjects
Abstract:
... Every day we are exposed to a cocktail of anthropogenic compounds many of which are biologically active and capable of inducing negative effects. The simplest way to monitor contaminants in a population is via human biomonitoring (HBM), however conventional targeted approaches require foreknowledge of chemicals of concern, often have compound specific extractions and provide information only for t ...
solidphaseextraction, etc ; adsorption; energy; models; sorbents; sorption isotherms; zirconium oxide; Show all 7 Subjects
Abstract:
... Owing to their structural and functional tunability, the preparation of multivariate metal-organic frameworks (MTV-MOFs) and investigation of their potential application has become a hot topic in fields of environment and energy. To achieve more adsorption and removal performance, a series of multivariate Zr-MOFs (TCPP@MOF‐808s) were prepared via mixed-ligands strategy for the first time. The morp ...
solidphaseextraction, etc ; anion exchange; chromatography; corn; diet; food chemistry; methanol; solvents; Show all 8 Subjects
Abstract:
... Per- and polyfluoroalkyl ether acids (PFEAs) are a subclass of per- and polyfluoroalkyl substances (PFAS) that are detected with increasing frequency in environmental matrices. Diet can be an important route of PFEA exposure, but the presence of PFEAs in food is poorly understood. Extraction methods for food samples exist for traditionally studied PFAS, but their suitability for PFEAs and other no ...
solidphaseextraction, etc ; fluorescence; interferometry; molecular imprinting; optical fibers; surface plasmon resonance; Show all 6 Subjects
Abstract:
... Given the challenges facing on-site analysis, molecularly imprinted polymers (MIPs) based optical fiber (OF) sensors are earning worldwide attention because of their integration of high specificity (from MIPs) and flexible sensing ability (from OF sensors). As such, how to design an efficient MIPs based OF sensor becomes a timely research topic. In this review, we discuss the state-of-the-art of M ...
solidphaseextraction, etc ; Anoxybacillus flavithermus; biosorption; hydrochloric acid; magnetism; sorbents; toxicity; toxicology; Show all 8 Subjects
Abstract:
... It was hypothesized that ɣ-iron(II) oxide nanoparticles (ɣ-Fe₂O₃ NPs) functionalized with Anoxybacillus flavithermus (A. flavithermus) as an effective magnetic sorbent for the preconcentrations of toxic metal ions. It is clear to conclude that the main novelty of this study is that ɣ-Fe₂O₃ NPs loaded with A. flavithermus is selective-specific for Cu(II), Mn(II). Structural functional groups of the ...
solidphaseextraction, etc ; adsorbents; food chemistry; food safety; forchlorfenuron; hydrogen; hydrophilicity; thidiazuron; Show all 8 Subjects
Abstract:
... The overuse of swelling agents in fruits and vegetables has rapidly increased, resulting in food safety problems. Hence, a new method for the selective extraction and detection of thidiazuron (TDZ) and forchlorfenuron (KT30) was developed using deep eutectic solvent-molecularly imprinted hydrophilic resin (DES-MIHR) as a pipette tip solid-phase extraction (PT−SPE) adsorbent with excellent molecula ...
solidphaseextraction, etc ; anion exchange; digestion; dyes; mass spectrometry; sodium dodecyl sulfate; Show all 6 Subjects
Abstract:
... We introduce a simple single-column protein digestion method for low-microgram-level samples containing sodium dodecyl sulfate and Coomassie dye that can be completed within a few hours. ...
solidphaseextraction, etc ; anti-inflammatory agents; enantiomers; enantioselectivity; liquid chromatography; silica; xanthone; Show all 7 Subjects
Abstract:
... Liquid chromatography is the most applied methodology for enantioseparation in preparative and semi-preparative scale; however, flash chromatography is seldom the first choice. This work proposes a new sustainable method to achieve pure enantiomers in mg scale. Herein, the functionalization of silica for flash chromatography columns with a suitable chiral selector, for subsequent quantitative enan ...
solidphaseextraction, etc ; high performance liquid chromatography; melamine; separation; standard deviation; thermoplastics; Show all 6 Subjects
Abstract:
... In the present study, we propose a novel method for the extraction of parabens in personal care products. A new, simple adsorptive material was obtained by combining metal‐organic frameworks and melamine sponges using the adhesive property of polyvinylidene fluoride. This new material, metal‐organic frameworks/melamine sponges, was found to be particularly suitable for solid‐phase extraction. The ...
solidphaseextraction, etc ; dispersants; ionic liquids; magnetism; methamidophos; parathion; phoxim; sodium carbonate; Show all 8 Subjects
Abstract:
... Herein, an ionic-liquid-based effervescence-enhanced magnetic solid-phase extraction (ILE-MSPE) approach for the extraction/concentration of organophosphorus pesticides in waters is reported with high stability and portability for rapid sample pretreatment in the field. The ionic-liquid-based magnetic effervescent tablet, composed of magnetic nanoparticles (Fe₃O₄), sodium carbonate (Na₂CO₃) as an ...