Search Results - "Bueno, María Izabel Silveira"
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Development of a Methodology for Calcium, Iron, Potassium, Magnesium, Manganese, and Zinc Quantification in Teas Using X-ray Spectroscopy and Multivariate Calibration
Published in Journal of agricultural and food chemistry (09-08-2006)“…In this study an analytical methodology for food analyses combining X-ray spectroscopy (XRS) with partial least-squares (PLS) data treatment was developed…”
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X-ray scattering and multivariate analysis for classification of organic samples: A comparative study using Rh tube and synchrotron radiation
Published in Analytica chimica acta (09-07-2007)“…This work compares the performance of X-ray tube induced and synchrotron induced energy dispersive X-ray fluorescence in generating scattering profiles when…”
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Journal Article Conference Proceeding -
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Image evaluation with chemometric strategies for quality control of paints
Published in Analytica chimica acta (11-04-2007)“…In this study a complementary analytical methodology for quality of paints evaluation was developed. Four different primers applied to steel substrates and…”
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Characterization of Portland cements by X-ray spectrometry allied to chemometrics
Published in Journal of chemometrics (01-11-2006)“…This work reports the use of X‐ray spectrometry (XRS) allied to chemometric techniques to easily distinguish types of Portland cements, as well as to quantify…”
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X‑ray Spectroscopy and Chemometric Methods for Real-Time Characterization of Petroleum for the Refining Process through True Boiling Point Curve and American Petroleum Institute Gravity
Published in Energy & fuels (20-06-2013)“…The previous characterization of petroleum by real-time analysis is a need in many refining plants and is considered a complex challenge because of the…”
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Calibration of paint and varnish properties: Potentialities using X-ray Spectroscopy and Partial Least Squares
Published in Chemometrics and intelligent laboratory systems (15-07-2008)“…This work presents a method for multivariate calibration of the properties of varnishes and paints, combining X-ray Spectroscopy (XRS) with Partial Least…”
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X-ray scattering processes and chemometrics for differentiating complex samples using conventional EDXRF equipment
Published in Chemometrics and intelligent laboratory systems (28-07-2005)“…Mild variations in organic matrices, which are investigated in this work, are caused by alterations in X-ray Raman scattering. The multivariate approaches,…”
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Neutron activation analysis and X-ray Rayleigh and Raman scattering of hair and nail clippings as noninvasive bioindicators for Cu liver status in Labrador Retrievers
Published in Analytical and bioanalytical chemistry (01-03-2008)“…The heritability of chronic hepatitis in the Labrador Retriever is studied with the aim of identifying the related gene mutation. Identification of cases and…”
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Evaluation of varnish and paint films using digital image processing, energy dispersive X-ray fluorescence spectrometry, and chemometric tools
Published in JCT research (01-12-2009)“…This article reports an analytical study of modifications occurring on surfaces coated by 17 varnishes and 10 paints. The surface films were submitted to…”
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X-ray fluorescence determination of adsorbed copper on activated charcoal after glycerin complexation
Published in Química nova (01-07-1998)“…X-This work shows an alternative method to copper determination by X-Ray Fluorescence (XRF). Since copper concentration in natural waters is not enough to…”
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X-RAY SPECTROMETRY ALLIED TO CHEMOMETRICS IN THE DETERMINATION OF PETROLEUM PARAMETERS
Published in Chemical engineering transactions (01-01-2009)Get full text
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Synchrotron radiation X-Ray fluorescence at the LNLS: beamline instrumentation and experiments
Published in X-ray spectrometry (01-09-1999)“…The x‐ray fluorescence beamline of the Laboratorio Nacional de Luz Síncrotron (LNLS) is described. The main optical component of the beamline is a silicon…”
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Journal Article Conference Proceeding -
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Compostos de mercúrio. Revisão de métodos de determinação, tratamento e descarte
Published in Química nova (01-08-2000)“…This review article on mercury compounds deals with the differences on toxicity of different forms of this metal, the Brazilian regulation for its disposal and…”
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Análise Multielementar de solos: uma proposta envolvendo equipamento portátil de fluorescência de raios X
Published in Semina. Ciências exatas e tecnológicas (30-10-2014)Get full text
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Multielement analysis of soils: a proposal involving a portable X-ray fluorescence equipment
Published in Semina. Ciências exatas e tecnológicas (01-10-2014)“…Portable instruments are excellent choices to perform precision agriculture since they allow in situ information about soil composition. In such a way, results…”
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Emprego da fluorescência de raios X por dispersão de energia para o mapeamento de troncos de árvores em Campinas, São Paulo Energy dispersive X-ray fluorescence applied to mapping of tree stems in Campinas, São Paulo
Published in Química nova (01-01-2009)“…Dendrochemistry is based on the determination of elements retained in tree rings, which can be useful to characterize environmental occurrences. This work…”
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Um método verde, rápido e simples para determinar o valor energético de farinhas e cereais matinais
Published in Química nova (2010)Get full text
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Um método verde, rápido e simples para determinar o valor energético de farinhas e cereais matinais A clean, fast and simple method to determine the energy value of dried foods and breakfast cereal
Published in Química nova (01-01-2010)“…The Energy Value (EV) corresponds to the sum of the energetic contributions from food macronutrients (proteins, carbohydrates and fats) and is required on the…”
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Análise exploratória rápida e não destrutiva (screening) da presença de elementos químicos tóxicos em material escolar por fluorescência de raios x
Published in Química Nova (01-01-2013)“…Compulsory in Brazil, toy certification aims to prevent possible risks in toy use. The Brazilian National Institute of Metrology (INMETRO) establishes the…”
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