Now showing items 1-4 of 4
(1)H NMR Fingerprinting of Brazilian Commercial Gasoline: Pattern-Recognition Analyses for Origin Authentication Purposes
(Energy & Fuels, 2009-08-01) [Artigo]
In (his work, the combination of hydrogen nuclear magnetic resonance ((1)H NMR) fingerprinting of gasoline with pattern-recognition analyses provides an approach to distinguish Brazilian commercial gasoline, processed in ...
Simultaneous Determination of Ba, Cr, Mo (Group 1), and Cu, Fe, Ni, and Pb (Group 2) in Commercial Fuel Ethanol by Graphite Furnace AAS
(Atomic Spectroscopy, 2008-11-01) [Artigo]
The direct and simultaneous determination of Ba, Cr, and Mo (group 1) and of Cu, Fe, Ni, and Pb (group 2) in commercial fuel ethanol by graphite furnace atomic absorption spectrometry is proposed employing no chemical ...
Development, optimization and validation of gas chromatographic fingerprinting of Brazilian commercial gasoline for quality control
(Journal of Chromatography A, 2008-08-22) [Artigo]
Three-step development, optimization and validation strategy for GC fingerprints of Brazilian commercial gasoline is described. A suitable chromatographic system was selected first. The following step was to improve ...
Screening Brazilian Commercial Gasoline Quality by ASTM D6733 GC and Pattern-Recognition Multivariate SIMCA Chemometric Analysis
(Chromatographia, 2009-04-01) [Artigo]
The combination of ASTM D6733 gas chromatographic fingerprinting data with pattern-recognition multivariate soft independent modeling of class analogy (SIMCA) chemometric analysis provides an original and alternative ...