Cromatografia gasosa bidimensional abrangente aplicada à análise qualitativa dos componentes majoritários do bio-óleo da pirólise de bagaço de laranja

Abstract

Brazil occupies a prominent position on the international scene as a producer of orange and in the appropriate use of bagasse, which is a byproduct of juice production process. The rational use of this waste material is of great importance, as by environmental or economical aspects. The bio-oil from fast Moraes MSA, Bortoluzzi JH, Migliorini MV, Zini CA, Caramao EB GC×GC bagaco de laranja 302 Scientia Chromatographica 2011; 3(4):301-314 pyrolysis of orange pulp is an alternative use of this residue, which can agregate value to this material, producing energy and chemical raw materials. In this study, 167 compounds were tentatively identified by comprehensive two-dimensional gas chromatography with flame ionization detector (GC×GC-FID) and mass spectrometry detector for time of flight (GC×GC/TOFMS), twenty six of these are found in concentrations above 1%. In addition, the optimization of some chromatographic parameters was presented. The higher selectivity of GC×GC/TOFMS for the one-dimensional chromatography is illustrated by the separation in the second dimension of co-eluting compounds in the first dimension, as well as by spectral deconvolution tool. This allows the separation of compounds by differences in their mass spectra, in the cases where the chromatographic separation was not possible.