Results 11 to 20 of about 6,944 (194)
Geophysical Monograph Series, Page 263-304., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside +3 more
wiley +1 more source
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
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
Novel Approach to Sample Preconcentration by Solvent Evaporation in Flow Analysis
Molecules, 2020 A preconcentration module operated in flow mode and integrated with a sequential injection system with spectrophotometric detection was developed.
Justyna Paluch +7 more
doaj +1 more source
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
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