Background conductivity independent counter flow preconcentration method for capillary electrophoresis
Sign Up to like & getrecommendations! Published in 2017 at "ELECTROPHORESIS"
DOI: 10.1002/elps.201700071
Abstract: A preconcentration method for anions is presented, which relies on a trap created by applying an electric field against a hydrodynamic flow of the sample. The trapping zone is created in front of a cation… read more here.
Keywords: preconcentration method; method; electrophoresis background; preconcentration ... See more keywords
Separation and determination of alkyl sulfate surfactants in wastewater by capillary electrophoresis coupled with contactless conductivity detection after preconcentration by simultaneous adsorption using alumina beads
Sign Up to like & getrecommendations! Published in 2020 at "ELECTROPHORESIS"
DOI: 10.1002/elps.202000086
Abstract: The aim of the present study is to determine four anionic alkyl sulfate (AS) surfactants with different alkyl chains, namely, C8, C10, C12, and C14, in wastewater by CE with capacitively coupled contactless conductivity detection… read more here.
Keywords: alkyl; adsorption; simultaneous adsorption; surfactants wastewater ... See more keywords
Use of metal nanoparticles for preconcentration and analysis of biological thiols
Sign Up to like & getrecommendations! Published in 2022 at "ELECTROPHORESIS"
DOI: 10.1002/elps.202200142
Abstract: Metal nanoparticles (NPs) exhibit several unique physicochemical properties, including redox activity, surface plasmon resonance, ability to quench fluorescence, biocompatibility, or a high surface‐to‐volume ratio. They are being increasingly used in analysis and preconcentration of thiol… read more here.
Keywords: preconcentration analysis; biological thiols; metal nanoparticles; preconcentration ... See more keywords
Determination of fluorine in herbs and water samples by molecular absorption spectrometry after preconcentration on nano-TiO2 using ultrasound-assisted dispersive micro solid phase extraction
Sign Up to like & getrecommendations! Published in 2017 at "Analytical and Bioanalytical Chemistry"
DOI: 10.1007/s00216-017-0589-y
Abstract: This work presents ultrasound-assisted dispersive micro solid phase extraction (USA DMSPE) for preconcentration of fluorine (F) in water and herb samples. TiO2 nanoparticles (NPs) were used as an adsorbent. The determination with slurry sampling was… read more here.
Keywords: absorption; extraction; water; determination ... See more keywords
Determination of Rare Earth Elements in Pore Water Samples of Marine Sediments Using an Offline Preconcentration Method
Sign Up to like & getrecommendations! Published in 2021 at "Archives of Environmental Contamination and Toxicology"
DOI: 10.1007/s00244-020-00793-0
Abstract: The concentrations of dissolved yttrium and rare earth elements (REY) in sediment pore water provide important geochemical information. However, due to the low REY concentration, complex matrix, and limited sample volume (often only a few… read more here.
Keywords: water; water samples; method; marine sediments ... See more keywords
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
Sign Up to like & getrecommendations! 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
Synthesis of cellulose nanofibers functionalized by dithiooxamide for preconcentration and determination of trace amounts of Cd(II) ions in water samples
Sign Up to like & getrecommendations! Published in 2020 at "Cellulose"
DOI: 10.1007/s10570-020-03388-z
Abstract: A highly efficient natural adsorbent was provided by the synthesis of modified cellulose nanofibers (CNFs) for preconcentration and determination of trace amounts of Cd(II) ions. CNFs were prepared by hydrolysis of wood pulp with strong… read more here.
Keywords: preconcentration determination; determination; cellulose nanofibers; determination trace ... See more keywords
Robust nanofibrillated cellulose composite SERS substrate for capillary preconcentration and trace level detection of organic molecules
Sign Up to like & getrecommendations! Published in 2020 at "Cellulose"
DOI: 10.1007/s10570-020-03478-y
Abstract: Preconcentration of organic analytes from an aqueous solution onto a substrate surface can significantly improve trace level analyte detection by Raman spectroscopy. Nanofibrillated cellulose (NFC)-based three dimensional (3D) substrates have great potential for this application… read more here.
Keywords: detection; water; solution; preconcentration ... See more keywords
β-Cyclodextrin-grafted magnetic graphene oxide nanocomposites in ultrasound-assisted dispersive magnetic solid-phase extraction for simultaneous preconcentration of lead and cadmium ions
Sign Up to like & getrecommendations! Published in 2021 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-021-04412-y
Abstract: This article presents an ultrasound-assisted dispersive magnetic solid-phase extraction method (USA-DMSPE) to preconcentration Cd(II) and Pb(II) simultaneously. The adsorbent (mGO-βCD) was synthesized through three steps with consumption of environmentally friendly materials at room temperature. First… read more here.
Keywords: mgo; microscopy; dispersive magnetic; assisted dispersive ... See more keywords
Determination of Selenium in Food Samples by High-Resolution Continuum Source Atomic Absorption Spectrometry After Preconcentration on Halloysite Nanotubes Using Ultrasound-Assisted Dispersive Micro Solid-Phase Extraction
Sign Up to like & getrecommendations! Published in 2018 at "Food Analytical Methods"
DOI: 10.1007/s12161-018-1345-4
Abstract: In this study, a preconcentration procedure was developed for the determination of selenium in food samples using high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS). Halloysite nanotubes (HNTs) were used as a solid… read more here.
Keywords: selenium food; determination selenium; selenium; preconcentration ... See more keywords
Extraction, preconcentration and spectrophotometric determination of trace levels of thiosulfate in environmental waters
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Iranian Chemical Society"
DOI: 10.1007/s13738-017-1053-9
Abstract: In the existing study, a new vortex-assisted cloud point extraction (VA-CPE) method was developed for determination of low levels of thiosulfate in environmental waters at 632 nm by spectrophotometry. The method is selectively based on charge-transfer-sensitive… read more here.
Keywords: determination; levels thiosulfate; method; environmental waters ... See more keywords