Results 21 to 30 of about 185 (71)

The Effect of Solvents, Acetone, Water, and Ethanol, on the Morphological and Optical Properties of ZnO Nanoparticles Prepared by Microwave

Journal of Nanotechnology, Volume 2012, Issue 1, 2012., 2012
HDA‐capped ZnO nanoparticles were prepared by solvothermal method using solvents of different polarities. A number of parameters were kept constant such as temperature, pressure, time, and pH while solvents were varied, that is, water, ethanol, and acetone. The TEM was used for the structural properties and morphologies such as spheres, mixture of rods,
Phindile B. Khoza, Makwena J. Moloto, Lucky M. Sikhwivhilu, Chuan Jian Zhong   +3 more
wiley   +1 more source

Speciation of Chromium in Soil and Sludge in the Surrounding Tannery Region, Ranipet, Tamil Nadu

International Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011
The distribution and mobility of chromium in the soils and sludge surrounding a tannery waste dumping area was investigated to evaluate its vertical and lateral movement of operational speciation which was determined in six steps to fractionate the material in the soil and sludge into (i) water soluble, (ii) exchangeable, (iii) carbonate bound, (iv ...
Badal Kumar Mandal, Raviraj Vankayala, L. Uday Kumar, S. K. Brar, S. M. Waliszewski   +4 more
wiley   +1 more source

Superparamagnetic Ironoxide Nanoparticles via Ligand Exchange Reactions: Organic 1,2‐Diols as Versatile Building Blocks for Surface Engineering

Journal of Nanomaterials, Volume 2008, Issue 1, 2008., 2008
A method for the preparation of ligand‐covered superparamagnetic iron oxide nanoparticles via exchange reactions is described. 1,2‐diol‐ligands are used to provide a stable binding of the terminally modified organic ligands onto the surface of γ‐Fe2O3‐nanoparticles (r ~ 4 nm).
Wolfgang H. Binder, Harald Weinstabl, Robert Sachsenhofer, S. Liao   +3 more
wiley   +1 more source

LabVIEW‐based sequential‐injection analysis system for the determination of trace metals by square‐wave anodic and adsorptive stripping voltammetry on mercury‐film electrodes

Journal of Analytical Methods in Chemistry, Volume 25, Issue 6, Page 133-140, 2003., 2003
The development of a dedicated automated sequential‐injection analysis apparatus for anodic stripping voltammetry (ASV) and adsorptive stripping voltammetry (AdSV) is reported. The instrument comprised a peristaltic pump, a multiposition selector valve and a home‐made potentiostat and used a mercury‐film electrode as the working electrodes in a thin ...
Anastasios Economou, Anastasios Voulgaropoulos   +1 more
wiley   +1 more source

One‐Pot Synthesis of Carbon‐Supported Pd Nanoparticles with Ni and Carbon Matrix Protection for Durable Alkaline Hydrogen Oxidation Reaction

ChemCatChem, Volume 16, Issue 15, August 12, 2024.
The class of electrocatalyst with protected metal active sites (e. g. the present carbon‐capped and carbon‐supported nanoparticles) is not new in the literature and is being applied in many domains of electrochemistry, due to the peculiar properties of such materials, like high tolerance towards passivation, hydridation or degradation (e. g.
Huong Doan, Ricardo Sgarbi, Quentin Labarde, Vincent Martin, Marian Chatenet   +4 more
wiley   +1 more source

Determination of cadmium by flame-atomic absorption spectrometry after preconcentration on silica gel modified with cupferron

Journal of the Brazilian Chemical Society, 2004
A method for the determination of cadmium by flame atomic absorption spectrometry (FAAS) after its preconcentration onto a column containing silica gel modified with cupferron was developed.
Bortoleto Gisele G., Macarovscha Greice T., Cadore Solange   +2 more
doaj  

Dosificación fotométrica de aluminio en aguas con el reactivo Cupferrón

, 1941
Fil:Pereyra, Caupolicán Jorge. Universidad de Buenos Aires.
Pereyra, Caupolicán Jorge
core   +1 more source

Procedimiento analitico para la determinacion de Ti e Impurezas en ceramica piezoelectrica de BaTiO 3.

Revista CENIC Ciencias Químicas, 2003
El control del contenido de Ti e impurezas en las ceramicas piezoelectricas es muy importante dado que influyen fuertemente en las propiedades electricas y electromecanicas de las mismas . Por ejemplo, si una ceramica piezoelectrica se somete a on fuerte
Aurelio Boza Carbonell, Juan Jimenez Chacon, Isel Cartes Nodarse   +2 more
doaj  

Desarrollo y optimización de un método voltamperométrico adsortivo para la determinación de vanadio, molibdeno y tungsteno en aguas

, 2013
Tesis (licenciatura en química)--Universidad de Costa Rica, 2013.Se desarrolló y optimizó un método para determinar simultáneamente vanadio, molibdeno y tungsteno en muestras de agua desionizada enriquecida, y muestras comerciales de agua potable, por ...
Murillo Alfaro, Katia
core  

Adsorptive Stripping Voltammetry for Determination of Vanadium: A Review. [PDF]

Materials (Basel), 2023
Wlazłowska E, Grabarczyk M.
europepmc   +1 more source