Articles with "vortex assisted" as a keyword



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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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Evaluation of green silicone surfactant-based vortex assisted dispersive liquid-liquid microextraction for sample preparation of organophosphorus pesticide residues in honey and fruit sample.

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Published in 2022 at "Journal of separation science"

DOI: 10.1002/jssc.202200149

Abstract: A vortex assisted surfactant enhanced emulsification liquid-liquid microextraction based on non-ionic silicone surfactant was successfully developed for the determination of organophosphorus pesticides in food samples coupled to gas chromatography-mass spectrometry. A new type of non-ionic… read more here.

Keywords: surfactant; sample; silicone surfactant; vortex assisted ... See more keywords
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Zirconium Nanoparticles Based Vortex Assisted Ligandless Dispersive Solid Phase Extraction for Trace Determination of Lead in Domestic Wastewater using Flame Atomic Absorption Spectrophotometry

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Published in 2021 at "Bulletin of Environmental Contamination and Toxicology"

DOI: 10.1007/s00128-021-03318-0

Abstract: In this paper, a sensitive and simple zirconium nanoparticles (Zr-NPs) based vortex assisted ligandless dispersive solid phase extraction (VA-LDSPE) method was developed for the preconcentration of lead from wastewater samples for the determination by slotted… read more here.

Keywords: extraction; zirconium nanoparticles; vortex assisted; based vortex ... See more keywords
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Pectic acid–graphene oxide nanocomposite as an adsorbent in vortex-assisted dispersive solid-phase extraction for preconcentration of copper ion followed by flame atomic absorption spectrometry

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Published in 2019 at "Polymer Bulletin"

DOI: 10.1007/s00289-019-02884-y

Abstract: An efficient, green, novel and rapid vortex-assisted dispersive solid-phase extraction (VADSPE) technique was used for the preconcentration and determination of trace levels of Cu 2+ followed by flame atomic absorption spectrometry. Graphene oxide (GO) was… read more here.

Keywords: graphene oxide; extraction; vortex assisted; preconcentration ... See more keywords
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Vortex-Assisted Liquid–Liquid Microextraction (VALLME): The Latest Applications

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Published in 2017 at "Chromatographia"

DOI: 10.1007/s10337-017-3403-2

Abstract: Vortex-assisted liquid–liquid microextraction employed for the isolation and preconcentration of analytes can be used together with various detection techniques in order to obtain a very versatile tool for the chemical analysis. This allows the analyzing… read more here.

Keywords: assisted liquid; vortex assisted; liquid liquid; liquid microextraction ... See more keywords
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Deep eutectic-based vortex-assisted/ultrasound-assisted liquid-phase microextractions of chromium species

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Published in 2020 at "Journal of the Iranian Chemical Society"

DOI: 10.1007/s13738-020-01890-6

Abstract: In the present work, vortex-assisted liquid-phase microextraction (VA-LPME) and ultrasound-assisted liquid-phase microextraction (UA-LPME) techniques were used for the speciation of chromium (Cr 3+ /Cr 6+ ) followed by their determination using flame atomic absorption spectrometry.… read more here.

Keywords: assisted liquid; vortex assisted; liquid phase; ultrasound assisted ... See more keywords
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Development and application of vortex-assisted membrane extraction based on metal-organic framework mixed-matrix membrane for the analysis of estrogens in human urine.

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Published in 2018 at "Analytica chimica acta"

DOI: 10.1016/j.aca.2018.04.013

Abstract: A vortex-assisted membrane extraction (VA-ME) method based on several metal-organic framework mixed-matrix membranes (MOF-MMMs) was firstly developed and applied for the analysis of four estrogens in human urine. The MOF-MMMs, with high MOF loading (∼67 wt%),… read more here.

Keywords: membrane extraction; vortex assisted; vortex; matrix ... See more keywords
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A green and efficient vortex-assisted liquid-phase microextraction based on supramolecular solvent for UV-VIS determination of nitrite in processed meat and chicken products.

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Published in 2020 at "Food chemistry"

DOI: 10.1016/j.foodchem.2020.127395

Abstract: This paper describes a simple, efficient and rapid analytical method for extraction and determination of nitrite in meat and chicken products by vortex-assisted supramolecular solvent-based liquid phase microextraction (VA-SUPRAS-LPME) prior to spectrophotometric detection. The SUPRAS… read more here.

Keywords: vortex assisted; determination; chicken products; supramolecular solvent ... See more keywords
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Vortex-assisted magnetic solid-phase extraction of cadmium in food, medicinal herb, and water samples using silica-coated thiol-functionalized magnetic multiwalled carbon nanotubes as adsorbent.

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Published in 2021 at "Food chemistry"

DOI: 10.1016/j.foodchem.2021.130823

Abstract: The current work focuses on the facile and effective synthesis of a new nanocomposite based on multiwalled carbon nanotubes (MWCNT) decorated with magnetic core-shell Fe3O4@SiO2 and functionalized with 3-mercaptopropyltrimethoxysilane (3-MPTS) used in the vortex-assisted dispersive… read more here.

Keywords: vortex assisted; multiwalled carbon; carbon nanotubes; magnetic solid ... See more keywords
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A simple gelatin aerogel tablet sorbent for the effective vortex assisted solid phase extraction of polycyclic aromatic hydrocarbons from tea samples.

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Published in 2022 at "Food chemistry"

DOI: 10.1016/j.foodchem.2022.132388

Abstract: A gelatin aerogel tablet was used as a vortex assisted solid phase extraction (VA-SPE) sorbent for the determination of polycyclic aromatic hydrocarbons (PAHs), benzo(a)anthracene (BaA), benzo(b)fluoranthene (BbF), and benzo(a)pyrene (BaP) in tea samples. They have… read more here.

Keywords: assisted solid; vortex assisted; phase extraction; aerogel tablet ... See more keywords
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Simultaneous determination of three carbamate pesticides using vortex-assisted liquid–liquid microextraction combined with HPLC-amperometric detection

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Published in 2019 at "Microchemical Journal"

DOI: 10.1016/j.microc.2019.104071

Abstract: Abstract In this study, a vortex-assisted liquid–liquid microextraction procedure for simultaneous determination of three carbamate pesticides (desmedipham, phenmedipham and chlorpropham) was developed and for a first time was combined with high-performance liquid chromatography with amperometric… read more here.

Keywords: liquid liquid; simultaneous determination; vortex assisted; assisted liquid ... See more keywords