02155naa a2200229 a 450000100080000000500110000800800410001902400270006010000200008724501480010726000090025552014670026465000130173165000120174465300130175670000150176970000170178470000250180170000230182670000220184977300540187119709012017-09-21       2013    bl uuuu     u00u1 u    #d7 a10.1021/ef400788v2DOI1 aABDELNUR, P. V.  aCharacterization of bio-oils from different pyrolysis process steps and biomass using high-resolution mass spectrometry.h[electronic resource]  c2013  aNext-generation biofuels have been widely investigated because they have particular advantages compared to first-generation biofuels. Pyrolysis is an example of a thermochemical route extensively used in oil and coal industries worldwide to produce these biofuels. Strategies for low-cost upgrading are among the biggest challenges facing the adoption of bio-oils in the development of commercial biofuels. Specific biomass sources could be the best option for generating bio-oil with the required properties. For this, it is necessary to understand the composition of these biomasses and their bio-oils. Here, we analyzed bio-oil samples from the fast pyrolysis of different biomasses collected during two different steps of the process by direct-infusion high-resolution mass spectrometry. First, a comparative study of two common high-resolution mass spectrometers, quadrupole time-of-flight mass spectrometry (Q-TOF MS) and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), was performed to validate the methodology and to investigate the differences in mass discrimination and resolution. FT-ICR MS showed the best performance because of its unsurpassed resolution and accuracy. We apply the common petroleomics tools to interpret the mass spectra obtained. The FT-ICR MS analysis reveals that bio-oils are dominated by Ox species. The class profile of bio-oils was strongly affected by the biomass and steps of the pyrolysis process.  abiofuels  abiomass  aBio-oils1 aVAZ, B. G.1 aROCHA, J. D.1 aALMEIDA, M. B. B. de1 aTEIXEIRA, M. A. G.1 aPEREIRA, R. C. L.  tEnergy & Fuelsgv. 27, n. 11, p. 6646-6654, 2013.