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Sequential spectrofluorimetric determination of free and total glycerol in biodiesel in a multicommuted flow system
(SPRINGER HEIDELBERG, 2011)
A new procedure for spectrofluorimetric determination of free and total glycerol in biodiesel samples is presented. It is based on the oxidation of glycerol by periodate, forming formaldehyde, which reacts with acetylacetone, ...
Alcohol induction of liver nuclear ethanol and N-nitrosodimethylamine metabolism to reactive metabolites
(Wiley, 2002-01)
In previous studies from our laboratory we reported the presence in highly purified liver nuclei, free of contamination with other organelles, of an ethanol metabolizing system (NEMS) able to lead to acetaldehyde and ...
Electrochemical reduction of CO2 mediated by poly-M-aminophthalocyanines (M = Co, Ni, Fe): poly-Co-tetraaminophthalocyanine, a selective catalyst
(ELSEVIER SCIENCE BV, 2005-03-29)
The electrochemical reduction of carbon dioxide was studied on a glassy carbon electrode modified with either polymeric M-tetrakis aminophthalocyanines (M = Co, Ni, Fe) or with the polymeric free ligand, in aqueous ...
Modelización de la reacción entre amoniaco atmosférico y los ácidos nítrico y sulfúrico mediante química cuántica computacional
(Escuela Superior Politécnica de Chimborazo, 2021-01-07)
The objective of this work was to model the reaction between atmospheric ammonia and nitric and sulfuric acids resulting from the excessive emission of ammonia into the atmosphere. Computational quantum chemistry methods ...
Influence of Heating Time and Metal Ions on the Amount of Free Fatty Acids and Formation Rates of Selected Carbonyl Compounds during the Thermal Oxidation of Canola Oil
(2010)
Canola oil was heated continuously for 8 h at a typical frying temperature (180 C) in the presence of various concentrations of the metal ions Fe(III), Cu(II), and Al(III) (9.2, 27.5, and 46.0 μg L-1 of oil)
to evaluate ...
A flow injection procedure based on solenoid micro-pumps for spectrophotometric determination of free glycerol in biodiesel
(ELSEVIER SCIENCE BV, 2010)
A flow system designed with solenoid micro-pumps is proposed for fast and greener spectrophotometric determination of free glycerol in biodiesel. Glycerol was extracted from samples without using organic solvents. The ...
Curing kinetics of a furan resin and its nanocomposites
(Elsevier Science, 2011-03)
A furan resin was synthesized from furfural and phenol and it was expected to have similar properties to the commonly used phenolic resins because the former was obtained by the replacement of formaldehyde by furfural, ...