Preconcentration and determination of diazepam in pharmaceutical and biological samples by graphene oxide based on dispersive solid phase microextraction [PDF]
شیمی کاربردی روز, 2019 Graphene oxide (GO) has a great potential to use as an adsorbent in sample preparation procedures. In this research, GO was used as an effective adsorbent in a simple GO-based dispersive micro-solid phase extraction technique coupled with high ...
Nazpari Mirzaei +2 more
doaj +1 more source
An easily prepared graphene oxide-ionic liquid hybrid nanomaterial for micro-solid phase extraction and preconcentration of Hg in water samples [PDF]
, 2018 A preconcentration method based on the use of graphene oxide (GO) functionalized with an ionic liquid (IL) was developed for trace Hg determination in water samples.
Cruz Sotolongo, Annaly +2 more
core +1 more source
Preconcentration Modeling for the Optimization of a Micro Gas Preconcentrator Applied to Environmental Monitoring [PDF]
Analytical Chemistry, 2015 This paper presents the optimization of a micro gas preconcentrator (μ-GP) system applied to atmospheric pollution monitoring, with the help of a complete modeling of the preconcentration cycle. Two different approaches based on kinetic equations are used to illustrate the behavior of the micro gas preconcentrator for given experimental conditions. The
Malick Camara +5 more
openaire +3 more sources
ChemEngineering, 2019 A new preconcentration method to determine lead in environmental waters using the aminosilanized magnetite Fe3O4 powder sorbent has been developed. The preconcentration method was combined with electrothermal atomization atomic absorption spectrometry ...
Tomoharu Kusutaki +4 more
doaj +1 more source
Indonesian Journal of Chemistry, 2010 A method of copper (II) ion preconcentration and separation from other ions by using a column containing fatty hydroxamic acids - loaded Amberlite XAD 4 resin (FHA-Amb) is described.
Dedy Suhendra +4 more
doaj +1 more source
Indonesian Journal of Chemistry, 2022 Carbon/Alginate/Chitosan Composite (CAC) as a sorbent for solid-phase extraction of Cu(II) (pre-concentration) with atomic absorption spectrometry for analysis was successfully prepared. The sorbent was made with a mass ratio of chitosan:alginate:carbon =
Ahmad Akhib Ainul Yaqin +3 more
doaj +1 more source
Direct Injection Liquid Chromatography High-Resolution Mass Spectrometry for Determination of Primary and Secondary Terrestrial and Marine Biomarkers in Ice Cores [PDF]
, 2019 Many atmospheric organic compounds are long-lived enough to be transported from their sources to polar regions and high mountain environments where they can be trapped in ice archives.
Bogialli, S. +8 more
core +1 more source
On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry [PDF]
, 2005 On-line preconcentration system for the selective, sensitive and simultaneous determination of chromium species was investigated. Dual minicolumns containing chelating resin were utilized for the speciation and preconcentration of Cr(III) and Cr(VI) in ...
Hamada, Kazuhide +5 more
core +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 ...
Amine, Didi Mohamed +3 more
core +1 more source
Synthesis of cross-linked chitosan functionalized with threonine moiety and its application to on-line collection/concentration and determination of Mo, V and Cu [PDF]
, 2007 A novel chitosan-based resin functionalized with threonine moiety was synthesized, and applied to the collection/concentration of Mo, V and Cu in environmental water samples, followed by their determination using inductively coupled plasma-atomic ...
Hakim, Lukman +4 more
core +1 more source