Buscar
Mostrando ítems 11-20 de 337
Photothermal Desorption of Single-Walled Carbon Nanotubes and Coconut Shell-Activated Carbons Using a Continuous Light Source for Application in Air Sampling
(Oxford University Press, 2014-07-11)
Many techniques exist to measure airborne volatile organic compounds (VOCs), each with differing advantages; sorbent sampling is compact, versatile, has good sample stability, and is the preferred technique for collecting ...
Radiolysis of water ice in the outer solar system: Sputtering and trapping of radiation products
(American Geophysical Union, 2001-12)
We performed quantitative laboratory radiolysis experiments on cubic water ice between 40 and 120 K, with 200 keV protons. We measured sputtering of atoms and molecules and the trapping of radiolytic molecular species. The ...
Sorption and desorption of phosphate on biochar and biochar-soil mixtures
(2013-09-01)
The term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption ...
Phosphate recovery from wastewater with magnetic particles and enrichment of the reclaimed solution as a source for struvite precipitation
(2016-05-30)
In this study phosphate was recovered from different wastewaters (WW) by using magnetic particles modified with layered double hydroxides (LDH). Afterwards, the enriched reclaimed solution was used for the precipitation ...
Simultaneous purification and immobilization of soybean hull peroxidase with a dye attached to chitosan mini-spheres
(Taylor & Francis Ltd, 2017-06)
Soybean hull peroxidase (EC 1.11.1.7, SBP) was simultaneously purified and immobilized by dye affinity chromatography with Reactive Blue 4 attached to chitosan mini-spheres. Under optimized conditions, 96% of SBP was ...
Desarrollo de un método analítico para la determinación de mercurio atmosférico
(2016-09-21)
El mercurio es un contaminante peligroso para el medio ambiente y la salud humana y como la utilización de este compuesto químico ha aumentado en las últimas décadas, sea visto la necesidad de desarrollar nuevos métodos ...
Diamond, titanium dioxide, titanium silicon oxide, and barium strontium titanium oxide nanoparticles as matrixes for direct matrix-assisted laser desorption/ionization mass spectrometry analysis of carbohydrates in plant tissues
(American Chemical Society, 2010-07)
Nanoparticles (NPs) of diamond, titanium dioxide, titanium silicon oxide, barium strontium titanium oxide, and silver (Ag) were examined for their potential as MALDI matrixes for direct laser desorption/ionization of ...
New insight into the electrochemical desorption of alkanethiol SAMs on gold
(Royal Society of Chemistry, 2012-09)
A combination of Polarization Modulation Infrared Reflection Absorption Spectroscopy (PMIRRAS) under electrochemical control, Electrochemical Scanning Tunneling Microscopy (ECSTM) and Molecular Dynamics (MD) simulations ...
Pore-blocking and pore-assisting factors during capillary condensation and evaporation
(Elsevier Science, 2002-08-15)
Thirty-four years ago Everett [The Solid-Gas Interface, Vol. 2, Marcel Dekker, New York, 1967, p. 1055] proposed a pore-blocking factor when establishing the foundations of a non-independent domain theory (IDT) of sorption ...
Polyacrylonitrile and Hybrid SBA-15: A Robust Composite Material for Use as Copper (II) Adsorbent in Flow Conditions
(Springer, 2019-08-22)
Novel processes for treating industrial wastewater containing metals are needed nowadays in order to meet environmentally safe water treatment standards. Attention has been paid to innovative adsorbents that permit to trap ...