Results 21 to 30 of about 20,968 (228)
Preconcentration method for trace metals in natural waters using 4-morpholine dithiocarbamate [PDF]
Journal of the Serbian Chemical Society, 2002 The optimum conditions were found for the preconcentration of trace metals in natural waters and model samples with standard metals concentrations by using 4-morpholine dithiocarbamate. The formed complexes were extracted with chloroform.
Todorović Zoran B. +3 more
doaj +1 more source
Large-volume sampling and preconcentration for trace explosives detection. [PDF]
, 2004 A trace explosives detection system typically contains three subsystems: sample collection, preconcentration, and detection. Sample collection of trace explosives (vapor and particulate) through large volumes of airflow helps reduce sampling time while ...
Linker, Kevin Lane
core +1 more source
Nanomaterials, 2021 Mercury detection in humic matter-containing natural waters is often associated with environmental harmful substances for sample preparation. Herein we report an approach based on photoactive titanium dioxide films with embedded gold nanoparticles (AuNP ...
Vivian Stock +3 more
doaj +1 more source
Gas/Liquid and Liquid/Liquid Solvent Extraction in Flow Analysis with the Chromatomembrane Cell
Sensors, 2006 Since twelve years the Chromatomembrane Cell has been proposed as a new andversatile device for extraxtion procedures in the flow based analysis. In the meantime aremarkable number of papers was submitted dealing with applications of the novel methodto ...
Juergen Simon, Leonid N. Moskvin
doaj +1 more source
Acta Chimica Slovenica, 2020 A multielement preconcentration procedure based Fe3O4 magnetic nanoparticles coated with polythiophene(Fe3O4@PTh MNPs) as a solid phase was reported for Cu(II), Co(II), Cd(II), Ni(II) and Zn(II) ions.
Nilgün Elyas Sodan +3 more
doaj +1 more source
Micro and Nano Engineering, 2022 In this study, an application of novel polymer-based microfluidic channels for preconcentration and detection of methane gas is investigated. Poly (methyl methacrylate) (PMMA) microfluidic channel is filled by graphene oxide (GO) as a new adsorbent for ...
Mohammad Ramezannezhad +3 more
doaj +1 more source
Folding-paper-based preconcentrator for low dispersion of preconcentration plug [PDF]
Micro and Nano Systems Letters, 2017 Ion concentration polarization (ICP) has been widely studied for collecting target analytes as it is a powerful preconcentrator method employed for charged molecules. Although the method is quite robust, simple, cheap, and yields a high preconcentration factor, a major hurdle to be addressed is extracting the preconcentrated samples without dispersing ...
Lee, Kyungjae +6 more
openaire +1 more source
Removal of chromium (III) by two-aqueous phases extraction [PDF]
, 2009 Two-aqueous phase extraction of chromium (III) as a solute from their aqueous solutions was investigated using polyethoxylated alcohols (CiEj) as a biodegradable non-ionic surfactant in the presence of anionic sodium dodecylbenzene sulfonate (SDBS ...
Nasr-Eddine, Belkhouche +3 more
core +1 more source
Spectrophotometric determination of trace iron(III) in natural water after its preconcentration with a chelating resin [PDF]
Journal of the Serbian Chemical Society, 2002 A method for the determination of Fe(III) at trace levels is described. Thus, prior to the spectrophotometric determination, a preconcentration of the trace amounts of iron(III) using a chelate forming resin is proposed.
ELEONORA-ANA NEAGU, ZENOVIA MOLDOVAN
doaj
Life, 2023 This hypothesis demonstrates that the efficiency of loop-mediated isothermal amplification (LAMP) for nucleic acid detection can be positively influenced by the preconcentration of microbial cells onto hydrophobic paper surfaces.
Isha Uttam +6 more
doaj +1 more source