Articles with "microextraction" as a keyword



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Extraction and preconcentration of triazine pesticides using rapid, simple, and disperser solventless microextraction technique followed by gas chromatography–nitrogen phosphorous detection

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Published in 2017 at "European Journal of Lipid Science and Technology"

DOI: 10.1002/ejlt.201600208

Abstract: In this study, a simple, rapid and efficient microextraction method followed by gas chromatography-nitrogen-phosphorous detection has been applied for the extraction, preconcentration and determination of some triazine pesticides in edible oil samples. In this method,… read more here.

Keywords: gas chromatography; extraction; detection; triazine pesticides ... See more keywords
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Metal-organic framework assisted matrix solid-phase dispersion microextraction of saponins using response surface methodology.

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Published in 2020 at "Electrophoresis"

DOI: 10.1002/elps.202000042

Abstract: An efficient and simple metal-organic framework (MOF) assisted matrix solid-phase dispersion (MSPD) microextraction was developed for the extraction of the five saponins in P. ginseng leaves. The target analyses were detected by ultra high performance… read more here.

Keywords: methodology; matrix solid; metal organic; assisted matrix ... See more keywords
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Hyphenated dispersive solid and liquid phase microextraction technique based on a hydrophobic deep eutectic solvent: Application for trace analysis of pesticides in fruit juices.

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Published in 2020 at "Journal of the science of food and agriculture"

DOI: 10.1002/jsfa.10279

Abstract: BACKGROUND Pesticides are extensively used worldwide to control plant pathogens and prevent agricultural product damage. However, they can pollute the environment and endanger human health. So far, a variety of sample preparation methods have been… read more here.

Keywords: liquid; analysis; deep eutectic; eutectic solvent ... See more keywords
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Vortex-assisted liquid-liquid microextraction of strontium from water samples using 4',4″(5″)-di-(tert-butylcyclohexano)-18-crown-6 and tetraphenylborate.

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Published in 2017 at "Journal of separation science"

DOI: 10.1002/jssc.201700205

Abstract: A vortex-assisted liquid-liquid microextraction method was developed for the chromatographic determination of strontium in aqueous samples. In the method, strontium was complexed with 4',4″(5″)-di-(tert-butylcyclohexano)-18-crown-6 in the presence of tetraphenylborate as the counter anion, which increased… read more here.

Keywords: assisted liquid; vortex assisted; strontium; liquid liquid ... See more keywords
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Layer-by-layer self-assembly of a novel covalent organic frameworks microextraction coating for analyzing polycyclic aromatic hydrocarbons from aqueous solutions via gas chromatography.

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Published in 2019 at "Journal of separation science"

DOI: 10.1002/jssc.201900870

Abstract: In this study, a new covalent organic framework, consisting of tetra(4-aminophenyl)porphyrin and tris(4-formyl phenyl)amine, was layer-by-layer immobilized on stainless-steel wire as a coating for microextraction. The fabrication process was easy and controllable under mild conditions.… read more here.

Keywords: layer; layer layer; aromatic hydrocarbons; polycyclic aromatic ... See more keywords
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Quantitative determination of trace phenazopyridine in human urine samples by hyphenation of dispersive solid-phase extraction and liquid-phase microextraction followed by GC/MS analysis.

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Published in 2020 at "Journal of separation science"

DOI: 10.1002/jssc.202000055

Abstract: Magnetic dispersive solid-phase extraction followed by dispersive liquid-liquid microextraction coupled with GC/MS was applied for the quantitative analysis of phenazopyridine in urinary samples. Magnetic dispersive solid-phase extraction was carried out using magnetic graphene oxide nanoparticles… read more here.

Keywords: phase; extraction; solid phase; microextraction ... See more keywords
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Bursting bubble flow microextraction combined with gas chromatography to analyze organophosphorus pesticides in aqueous samples.

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Published in 2021 at "Journal of separation science"

DOI: 10.1002/jssc.202001213

Abstract: Bubble-bursting flow microextraction combined with gas chromatography as a green and sustainable microextraction method is used to determine some organophosphorus pesticide residues in water samples. The extraction process occurs at the surface of liquid-gas contact,… read more here.

Keywords: chromatography; flow microextraction; gas; microextraction combined ... See more keywords
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Novel nanohybrids for effervescence enhanced magnetic solid-phase microextraction of wide-polarity organic pollutants in roasted meat samples.

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Published in 2021 at "Journal of separation science"

DOI: 10.1002/jssc.202100482

Abstract: To simultaneously and efficiently extract pollutants with differential polarities, we herein fabricated and characterized a multifunctional nanocomposite. The novel nanohybrids used NiFe2 O4 as magnetic cores, and NH2 -MIL-101(Al), β-cyclodextrin and graphene oxide as functional… read more here.

Keywords: meat samples; roasted meat; novel nanohybrids; nanohybrids effervescence ... See more keywords
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Development of monolith/aminated carbon nanotubes composite-based solid phase microextraction of phenoxycarboxylic acids herbicides in water and soil samples.

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Published in 2021 at "Journal of separation science"

DOI: 10.1002/jssc.202100666

Abstract: In this study, a new adsorbent based on monolith/aminated carbon nanotubes composite was facilely prepared and employed as the extraction phase of multiple monolithic fibers solid phase microextraction for capture of phenoxycarboxylic acids herbicides. The… read more here.

Keywords: soil samples; aminated carbon; microextraction; water soil ... See more keywords
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Switchable hydrophilic solvent-based dispersive liquid-liquid microextraction coupled with high-performance liquid chromatography for the determination of four types of sulfonylurea herbicides in soils.

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Published in 2022 at "Journal of separation science"

DOI: 10.1002/jssc.202100703

Abstract: In this study, switchable hydrophilic solvent-based dispersive liquid-liquid microextraction coupled with high-performance liquid chromatography was developed for the determination of four sulfonylurea herbicides in soils. For the first time, the sample pretreatment was achieved due… read more here.

Keywords: switchable hydrophilic; microextraction; hydrophilic solvent; sulfonylurea herbicides ... See more keywords
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Free and glycosylated aroma compounds in grapes monitored by solid‐liquid extraction and dispersive liquid‐liquid microextraction combined with gas chromatography‐mass spectrometry

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Published in 2022 at "Journal of Separation Science"

DOI: 10.1002/jssc.202200181

Abstract: Fifteen aroma compounds have been determined in their free and glycosylated forms in grapes using dispersive liquid‐liquid microextraction with gas chromatography‐mass spectrometry. The sample treatment includes a previous solid‐liquid extraction stage and subsequent parallel microextraction… read more here.

Keywords: dispersive liquid; microextraction; extraction; liquid ... See more keywords