Articles with "pre concentration" as a keyword



Chemically functionalized silica nanoparticles‐based solid‐phase extraction for effective pre‐concentration of highly toxic metal ions from food and water samples

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Published in 2018 at "Applied Organometallic Chemistry"

DOI: 10.1002/aoc.4012

Abstract: In this research study, an efficient solid-phase extraction procedure based on a new organometallic, effective, eco-friendly and bio-degradable nanoadsorbent was firstly introduced for influential pre-concentration of Cu(II), Zn(II), Pb(II), Cd(II) and Mn(II) ions from food… read more here.

Keywords: pre concentration; extraction; food water; solid phase ... See more keywords

Chromatomembrane pre-concentration of phenols using a new 3D printed micro flow cell followed by RP HPLC determination.

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Published in 2021 at "Journal of separation science"

DOI: 10.1002/jssc.202100089

Abstract: Chromatomembrane process represents a universal approach to the separation of compounds in liquid-gas and liquid-liquid phases systems. However, the broad application of chromatomembrane separation methods in chemical analysis is restricted by the absence of serially… read more here.

Keywords: pre concentration; flow cell; determination; chromatomembrane ... See more keywords

Quartz crystal microbalance–based aptasensor integrated with magnetic pre-concentration system for detection of Listeria monocytogenes in food samples

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Published in 2024 at "Mikrochimica Acta"

DOI: 10.1007/s00604-024-06307-2

Abstract: A fast and accurate identification of Listeria monocytogenes. A new quartz crystal microbalance (QCM) aptasensor was designed for the specific and rapid detection of L. monocytogenes. Before detection of the target bacterium from samples in… read more here.

Keywords: detection; system; pre concentration; magnetic pre ... See more keywords

Efficient pre-concentration of As(III) in food samples using guanidine-modified magnetic mesoporous silica

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Published in 2020 at "Journal of Porous Materials"

DOI: 10.1007/s10934-020-00873-5

Abstract: An efficient magnetic mesoporous structure was designed and prepared for the facile pre-concentration of As(III) ions. To prepare the sorbent, core–shell magnetic silica nanoparticles were covered by MCM-41 like structure and then the surface was… read more here.

Keywords: iii; pre concentration; silica; concentration iii ... See more keywords

Application of ion-imprinted polymer synthesized by precipitation polymerization as an efficient and selective sorbent for separation and pre-concentration of chromium ions from some real samples

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Published in 2018 at "Journal of the Iranian Chemical Society"

DOI: 10.1007/s13738-018-1413-0

Abstract: In this study, a new Cr(III)-imprinted polymer (Cr(III)-IIP) is prepared from CrCl3·6H2O, methacrylic acid functional monomer, ethyleneglycoldimethacrylate cross-linking agent, 2,2ʹ-azobisisobutyronitrile radical initiator and 2,2-(azanediylbis (ethane-2,1-diyl))bis(isoindoline-1,3-dione) ligand. To obtain the maximum adsorption capacity, the optimum condition… read more here.

Keywords: pre concentration; real samples; imprinted polymer; iip ... See more keywords

Pre-concentration and determination of zinc in water samples by ligand assisted pseudo stirbar hollow fiber solid/liquid phase microextraction

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Published in 2017 at "Arabian Journal of Chemistry"

DOI: 10.1016/j.arabjc.2014.05.021

Abstract: Abstract Pre-concentration and determination of Zn (II) across a ligand assisted pseudo stirbar hollow fiber solid/liquid phase microextraction method in water samples has been investigated. All detections were carried out by differential pulse anodic stripping… read more here.

Keywords: water samples; concentration; hollow fiber; pre concentration ... See more keywords
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A systematic process synthesis method towards sustainable extractive distillation processes with pre-concentration for separating the binary minimum azeotropes

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Published in 2020 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2020.115932

Abstract: Abstract A systematic process synthesis method is investigated towards sustainable extractive distillation with pre-concentration. To approach energy saving, it is one of the common senses to eliminate the infamous remixing effects. In detail, the energy… read more here.

Keywords: pre concentration; extractive distillation; systematic process; column ... See more keywords

Synthesis and characterization of magnetic poly(acrylonitrile-co-acrylic acid) nanofibers for dispersive solid phase extraction and pre-concentration of malachite green from water samples

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Published in 2017 at "Journal of Industrial and Engineering Chemistry"

DOI: 10.1016/j.jiec.2017.11.010

Abstract: Abstract This research describes the development of a new design of nanosorbents, magnetic poly(acrylonitrile-co-acrylic acid) (PAN-co-AA) nanofibers, for the pre-concentration of malachite green (MG) residues in water samples via dispersive magnetic solid phase extraction (d-MSPE)… read more here.

Keywords: pre concentration; extraction; water samples; magnetic poly ... See more keywords

An integrated strategy for extraction and pre-concentration of four astragalosides from Radix Astragali by a formulated surfactant aqueous system

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Published in 2019 at "Journal of Industrial and Engineering Chemistry"

DOI: 10.1016/j.jiec.2018.11.003

Abstract: Abstract Integrated and environmentally friendly methods for extraction and enrichment of natural products have gained increasing interests. The proposed preparation process provides the possibility that extraction and pre-concentration for astragalosides from Radix Astragali roots can… read more here.

Keywords: system; astragalosides radix; radix astragali; extraction pre ... See more keywords
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Switchable solvent-based micro-extraction of pesticides in food and environmental samples.

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Published in 2021 at "Talanta"

DOI: 10.1016/j.talanta.2020.121807

Abstract: Switchable solvents are new generation solvents that are environmentally friendly and can be used for the effective pre-concentration of pesticide residues in food and environmental matrices. They have physico-chemical properties that can be switched abruptly… read more here.

Keywords: pre concentration; food environmental; micro extraction; concentration ... See more keywords

Sorptive extraction of pesticides from food and environmental samples using metal organic framework-based adsorbents

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Published in 2021 at "Trends in Environmental Analytical Chemistry"

DOI: 10.1016/j.teac.2021.e00141

Abstract: Abstract Sorptive pre-concentration of pesticide residues in food and environmental samples is increasingly gaining momentum. This can be attributed to fact that most sorptive extraction techniques are solvent-free as well as the availability of emerging… read more here.

Keywords: pre concentration; environmental samples; pesticides food; food environmental ... See more keywords