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Determination of nickel in fuel ethanol using a carbon paste modified electrode containing dimethylglyoxime
(Springer, 2006-10-01)
A mercury-free electrode chemically modified with carbon paste containing dimethylglyoxime was used for determination of nickel in fuel ethanol. The instrumental parameters and composition of the modified paste were ...
Application of cellulose modified with p-aminobenzoic groups in preconcentration system for determination of Cu, Fe, Ni, and Zn in fuel ethanol samples by flame atomic absorption spectrometry
(Taylor & Francis Inc, 2007-01-01)
Cellulose chemically modified with p-aminobenzoic groups, abbreviated as Cel-PAB, was used for preconcentration of copper, iron, nickel, and zinc from ethanol fuel, normally used in Brazil as engine fuel. The surface ...
Electrooxidation and determination of dopamine using a Nafion (R)-cobalt hexacyanoferrate film modified electrode
(Molecular Diversity Preservation Int, 2008-03-01)
The electrocatalysis of dopamine has been studied using a cobalt hexacyanoferrate film (CoHCFe)-modified glassy carbon electrode. Using a rotating disk CoHCFe-modified electrode, the reaction rate constant for dopamine was ...
Evaluation of modifiers for determination of V in parsley by GF AAS
(Elsevier B.V., 2009-10-15)
The thermal behaviour of vanadium in the absence and presence of BaF(2), W and Rh as modifiers were evaluated for the direct determination of V in parsley slurries by GF AAS. For the sequence BaF(2), no modifier, W and Rh, ...
Evaluation of modifiers for determination of V in parsley by GF AAS
(Elsevier B.V., 2009-10-15)
The thermal behaviour of vanadium in the absence and presence of BaF(2), W and Rh as modifiers were evaluated for the direct determination of V in parsley slurries by GF AAS. For the sequence BaF(2), no modifier, W and Rh, ...
Electrooxidation and determination of dopamine using a Nafion (R)-cobalt hexacyanoferrate film modified electrode
(Molecular Diversity Preservation Int, 2008-03-01)
The electrocatalysis of dopamine has been studied using a cobalt hexacyanoferrate film (CoHCFe)-modified glassy carbon electrode. Using a rotating disk CoHCFe-modified electrode, the reaction rate constant for dopamine was ...
INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
(Universidad del Bío-Bío, 2010)
Chemical composition changes in eucalyptus and pinus woods submitted to heat treatment
(ELSEVIER SCI LTD, 2008)
This study investigated the influence of heat treatment on the chemical composition of Eucalyptus saligna and Pinus caribaea var. hondurensis woods to understand its role in wood processing. E. saligna and P. caribaea var. ...
Thermal, rheological, and structural behaviors of natural and modified cassava starch granules, with sodium hypochlorite solutions
(2013-03-01)
The use of chemically modified starches is widely accepted in various industries, with several applications. In this research, natural cassava starch granules were treated with standard sodium hypochlorite solution at 0.8, ...