Results 91 to 100 of about 20,968 (228)

Determinação espectrofotométrica de alumínio em concentrados salinos utilizados em hemodiálise empregando pré-concentração em fluxo Spectrophotometric aluminium determination in high salts concentrations solution used in hemodyalisis emploing preconcentration in flow injection

Química Nova, 2002
An automatic flow injection procedure for spectrophotometric aluminium determination in purified water and solutions containing high salts concentrations used for hemodyalisis treatment was developed.
Maria do Socorro Silva Pereira, Boaventura Freire dos Reis   +1 more
doaj   +1 more source

Supramolecular Solvent Liquid Phase Microextraction of Voriconazole İn Pharmaceutical and Environmental Samples With High Performance Liquid Chromatography Detection

Cumhuriyet Science Journal
In this study, a new analytical method based on the supramolecular solvent liquid phase microextraction (Ss-LPME) and HPLC was developed for the analysis of voriconazole as an active drug in the class of antifungals with a wide spectrum of action at ...
Erkan Yılmaz, Gülnihal Yıldız
doaj   +1 more source

Estudo de sorção de herbicidas pelos argilominerais vermiculita e montmorilonita

Química Nova, 2011
The clay minerals montmorillonite (MT) and vermiculite (VT), previously treated with Ca2+, K+ and Na+, were employed in a sorption study with herbicides. The herbicides 2,4-D, diuron, alachlor and metolachlor showed no interaction with MT and VT.
Edivaltrys Inayve Pissinati de Rezende, Patricio Guillermo Peralta-Zamora, Gilberto Abate   +2 more
doaj   +1 more source

Preconcentration of Trace Elements by Sorption

Analytical Sciences, 1991
In the determination of trace elements in complex matrices, enrichment and separation of the analytes is of special importance. A wide variety of methods have been proposed for preconcentration according to the nature of the samples, the types and concentrations of the analytes, and the methods to be used for measurement.
openaire   +2 more sources

Preconcentration Modeling for the Optimization of a Micro Gas Preconcentrator Applied to Environmental Monitoring.

Procedia Chemistry, 2009
AbstractThis paper presents the complete modeling of the preconcentration cycle for the optimization of a Micro Gas Preconcentrator applied to atmospheric pollution monitoring. The particularity of this modeling is based on the fact that it includes all equations governing not only the adsorption and desorption phenomena but also the detection phase ...
Camara, El Hadji Malick, Breuil, Philippe, Pijolat, Christophe   +2 more
openaire   +2 more sources

Simple and Rapid Spectrophotometric Determination of Trace Phosphate with Preconcentration of Phosphomolybdenum Blue Anion on Protonated Chitin. [PDF]

, 1992
journal ...
HOSHI, Suwaru, MATSUBARA, Mutsuya, KANAGAMI, Sachiko, UTO, Masayuki   +3 more
core  

Metal Oxide Thin Films Grafted on Silica Gel Surfaces: Recent Advances on the Analytical Application of these Materials

Journal of the Brazilian Chemical Society, 2001
In the highly dispersed MxOy monolayer film on a porous SiO2 surface, denoted as SiO2/MxOy, the Si-O-M covalent bond formed on the SiO2 surface restricts the mobility of the attached oxide resulting in coordinatively unsaturated metal oxides (LAS) in ...
Gushikem Yoshitaka, Rosatto Simone S.
doaj  

Early Detection of Volatile Tumor Biomarkers Using Chemoresistive Sensors and MEMS-Based Preconcentration: A Study on K562 Cell Line

Engineering Proceedings
The analysis of volatile organic compounds emitted by cell cultures provides a non-invasive method for monitoring metabolic and oxidative stress states.
Melissa Tamisari, Elena Spagnoli, Maria Teresa Altieri, Michele Astolfi, Monica Borgatti, Giulia Breveglieri, Ivan Elmi, Vincenzo Guidi, Luca Masini, Arianna Rossi, Giuseppe Sabbioni, Emanuela Tavaglione, Stefano Zampolli, Barbara Fabbri   +13 more
doaj   +1 more source

Magnetic Nanoparticles: From Design and Synthesis to Real World Applications

Nanomaterials, 2017
The increasing number of scientific publications focusing on magnetic materials indicates growing interest in the broader scientific community. Substantial progress was made in the synthesis of magnetic materials of desired size, morphology, chemical ...
Jiri Kudr, Yazan Haddad, Lukas Richtera, Zbynek Heger, Mirko Cernak, Vojtech Adam, Ondrej Zitka   +6 more
doaj   +1 more source

Syringe Solid-Phase Extraction for Cu(II) in Powder Milk Using Alginate-Chitosan-PVA Adsorbents: Method Development and Application

Indonesian Journal of Chemistry
This research designed and optimized a syringe solid-phase extraction (SPE) technique employing a modified chitosan, alginate, and PVA (CAP) adsorbent for the determination and preconcentration of Cu(II) ions in powdered milk samples.
Ahmad Akhib Ainul Yaqin, Dwi Siswanta, Suherman Suherman   +2 more
doaj   +1 more source