Search Results - "Pereira, Rosana C. L."
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Predictive Petroleomics: Measurement of the Total Acid Number by Electrospray Fourier Transform Mass Spectrometry and Chemometric Analysis
Published in Energy & fuels (18-04-2013)“…Crude oil samples are uniquely complex because of the number of compounds present that can only be resolved using Fourier transform ion cyclotron resonance…”
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Waxy Crude Oil Emulsion Gel: Chemical Characterization of Emulsified Phase Extract Components
Published in Energy & fuels (18-12-2014)“…Emulsions of several waxy crude oils exhibiting similar properties were prepared and characterized to better understand the nature of their polar components…”
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Precision in Petroleomics via Ultrahigh Resolution Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
Published in Energy & fuels (19-12-2013)“…The ultrahigh resolution and mass accuracy of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) with the aid of soft ionization…”
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Petroleomics by EASI(±) FT-ICR MS
Published in Analytical chemistry (Washington) (15-05-2010)“…An ambient ionization/desorption technique, namely, easy ambient sonic-spray ionization mass spectrometry (EASI), has been applied to crude oil samples. From a…”
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Characterization of Bio-oils from Different Pyrolysis Process Steps and Biomass Using High-Resolution Mass Spectrometry
Published in Energy & fuels (21-11-2013)“…Next-generation biofuels have been widely investigated because they have particular advantages compared to first-generation biofuels. Pyrolysis is an example…”
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Assessing Biodegradation in the Llanos Orientales Crude Oils by Electrospray Ionization Ultrahigh Resolution and Accuracy Fourier Transform Mass Spectrometry and Chemometric Analysis
Published in Energy & fuels (21-03-2013)“…Focusing on the O2 class, a set of crude oils from Llanos Orientales Basin, Colombia, were classified in terms of biodegradation levels using negative ion mode…”
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Comprehensive Chemical Composition of Gas Oil Cuts Using Two-Dimensional Gas Chromatography with Time-of-Flight Mass Spectrometry and Electrospray Ionization Coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
Published in Energy & fuels (16-08-2012)“…Seven gas oil (GO) cuts from the same atmospheric petroleum residuum were obtained by molecular distillation at final temperatures of 490.0 and 503.2 °C…”
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Petroleomics via Orbitrap mass spectrometry with resolving power above 1 000 000 at m / z 200
Published in RSC advances (01-01-2018)“…The performance of the high-field MegaOrbitrap Fourier transform mass spectrometer (FT-MS) with electrospray ionization (ESI) was evaluated to perform…”
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Petroleomics by Traveling Wave Ion Mobility–Mass Spectrometry Using CO2 as a Drift Gas
Published in Energy & fuels (19-12-2013)“…The technique of choice for petroleomics has been ultra-high-resolution and high-accuracy Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR…”
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Biodiesel Typification and Quality Control by Direct Infusion Electrospray Ionization Mass Spectrometry Fingerprinting
Published in Energy & fuels (01-11-2007)“…Direct infusion electrospray ionization mass spectrometry (ESI-MS) of aqueous/methanolic extracts of biodiesel samples is shown to permit simple and fast…”
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Structure-drift time relationships in ion mobility mass spectrometry
Published in International journal for ion mobility spectrometry (01-06-2013)“…Ion mobility spectrometry (IMS) separates ions while they travel through a buffer gas under the influence of an electrical field. The separation is affected by…”
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Comprehensive Analysis of Oxy-Naphthenic Acids in Produced Water via Liquid–Liquid Extraction and Orbitrap Mass Spectrometry
Published in Energy & fuels (02-11-2023)“…Produced water, a complex saline concoction, houses naphthenic acids (NAs), some of the most potent organic toxins that significantly threaten aquatic life…”
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Extraction and fractionation of basic nitrogen compounds in vacuum residue by solid-phase extraction and characterization by ultra-high resolution mass spectrometry
Published in International journal of mass spectrometry (01-07-2017)“…•Solid-phase extraction was used to fractionate basic nitrogen-containing molecules from vacuum residue.•The method was able to extract and fractionate…”
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Petroleomics by Traveling Wave Ion Mobility–Mass Spectrometry Using CO 2 as a Drift Gas
Published in Energy & fuels (19-12-2013)Get full text
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Prediction of Total Acid Number in Distillation Cuts of Crude Oil by ESI(−) FT‑ICR MS Coupled with Chemometric Tools
Published in Journal of the Brazilian Chemical Society (01-09-2017)“…Competitive adaptive reweighted sampling-partial least squares (CARS-PLS) and negative-ion mode electrospray ionization Fourier transform ion cyclotron…”
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Petroleomics via Orbitrap mass spectrometry with resolving power above 1 000 000 at m/z 200Electronic supplementary information (ESI) available: Fig. S1 - standard Orbitrap and compact high-field Orbitrap geometry scheme; Fig. S2 - major figures of merit in MS; Fig. S3 - S/N for FT-MS analyzers; Fig. S4 - dynamic range for FT-MS analyzers; Fig. S5 - spectral error for FT-MS analyzers; Fig. S6 - transients for FT-MS analyzers; Fig. S7 - differences in mass accuracy and resolution between FT-MS an
Published 07-02-2018“…The performance of the high-field MegaOrbitrap Fourier transform mass spectrometer (FT-MS) with electrospray ionization (ESI) was evaluated to perform…”
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Predictive Petroleomics: Measurement of the Total Acid Number by Electrospray Fourier Transform Mass Spectrometry and Chemometric Analysis
Published in Energy & fuels (2013)Get full text
Conference Proceeding -
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Petroleomics by Traveling Wave Ion Mobility-Mass Spectrometry Using CO sub(2) as a Drift Gas
Published in Energy & fuels (19-12-2013)“…The technique of choice for petroleomics has been ultra-high-resolution and high-accuracy Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR…”
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Journal Article