Development, optimization and validation of gas chromatographic fingerprinting of Brazilian commercial diesel fuel for quality control.
A three-step development, optimization and validation strategy is described for gas chromatography (GC) fingerprints of Brazilian commercial diesel fuel. A suitable GC-flame ionization detection (FID) system was selected to assay a complex matrix such as diesel. The next step was to improve acceptable chromatographic resolution with reduced analysis time, which is recommended for routine applications. Full three-level factorial designs were performed to improve flow rate, oven ramps, injection volume and split ratio in the GC system. Finally, several validation parameters were performed. The GC fingerprinting can be coupled with pattern recognition and multivariate regressions analyses to determine fuel quality and fuel physicochemical parameters. This strategy can also be applied to develop fingerprints for quality control of other fuel types.
Center for Monitoring and Research of the Quality of Fuels, Crude Oil and Derivatives - CEMPEQC, Organic Chemistry Department, Institute of Chemistry, São Paulo State University - UNESP, R. Prof. Francisco Degni s/n, Quitandinha, 14800-900, Araraquara - SP, Brazil.
Bruno César Diniz Brito
BC
dos Santos
Danilo Luiz
DL
Flumignan
José Eduardo
JE
de Oliveira