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PAPERS

Scientific papers published by GEAQA researchers

2019

A simple voltammetric electronic tongue for the analysis of coffee adulterations. Food Chemistry 273 (2019) 31-38. Link

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Special issue - VIII Brazilian Chemometrics Workshop. Food Chemistry 273 (2019) 1-2. Link

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2018

Voltammetric e-Tongue Based on a Single Sensor and Variable Selection for the Classification of Teas. Food Analytical Methods (2018) 1958-1968. Link

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Identification Using Classification Analysis of Flunitrazepam in Necrophagous Larvae via Differential Pulse Voltammetry and Fluorescence Excitation-Emission Matrix (EEM) Spectroscopy. Journal of The Brazilian Chemical Society (2018) 2595-2604. Link

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Multivariate statistical process control in annual pharmaceutical product review. Journal of Process Control 69 (2018) 97-102. Link 

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2017

Use of multivariate analysis on Fabry-Pérot interference spectra of nanoporous anodic alumina (NAA) for optical sensors purposes. Sensors and Actuators B - Chemical 248 (2017) 718-723. Link

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Vibrational spectroscopy and multivariate control charts: A new strategy for monitoring the stability of captopril in the pharmaceutical industry. Microchemical Journal 133 (2017) 279-285. Link

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A porphyrin-based fluorescence method for zinc determination in commercial propolis extracts without sample pretreatment. Luminescence 32 (2017) 1227-1232. Link

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2016

Chemometric modeling of kinetic-fluorescent third-order data for thiamine determination in multivitamin complexes. Microchemical Journal 128 (2016) 42-46. Link

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Assessment of semiempirical enthalpy of formation in solution as an effective energy function to discriminate native-like structures in protein decoy sets. Journal of Computational Chemistry 37 (2016) 1962-1972. Link

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A new and consistent parameter for measuring the quality of multivariate analytical methods: generalized analytical sensitivity. Analytica Chimica Acta 933 (2016) 43. Link

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Regression models based on new local strategies for near infrared spectroscopic data. Analytica Chimica Acta 933 (2016) 50. Link

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2015

Ethanol fuel adulteration with methanol assessed by cyclic voltammetry and multivariate calibration. Fuel 156 (2015) 20-25. Link

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Multivariate control charts for monitoring captopril stability. Microchemical Journal 118 (2015) 259-265. Link

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2014

Multivariate linear regression with variable selection by a successive projections algorithm applied to the analysis of anodic stripping voltammetry data. Electrochimica Acta 127 (2014) 68-78. Link

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Comparison of Different PLS Algorithms for Simultaneous Determination of Cd(II), Cu(II), Pb(II), and Zn(II) by Anodic Stripping Voltammetry at Bismuth Film Electrode. Electroanalysis 26 (2014) 299-305. Link

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Characterization of electrical discharges during spark anodization of zirconium in different electrolytes. Electrochimica Acta 130 (2014) 477–487. Link

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Simultaneous determination of Cu, Pb, Cd, Ni, Co and Zn in bioethanol fuel by adsorptive stripping voltammetry and multivariate linear regression. Fuel 137 (2014) 172-178. Link

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2013

Multivariate optimization of the voltammetric determination of Cd, Cu, Pb and Zn at bismuth film. Application to analysis of biodiesel. Microchemical Journal 110 (2013) 417-424. Link

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An electroanalytical method to detect adulteration of ethanol fuel by using multivariate analysis. Electrochimica Acta 111 (2013) 160-164. Link

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Simultaneous determination of acesulfame-K and aspartame using linear sweep voltammetry and multivariate calibration. Microchemical Journal 106 (2013) 347-350. Link

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Simultaneous determination of arsenic, antimony and selenium in agronomic samples by hydride generation and optical emission spectrometry. Brazilian Journal of Analytical Chemistry - BrJAC 10 (2013) 460-467. Link

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2012

Control of ionic properties of N-nitrosodimethylamine through hydrogen substitution by fluorine atoms. Structural Chemistry 23 (2012) 17-26. Link

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2011

Flow-batch miniaturization. Talanta 86 (2011) 208–213. Link

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Exploring the emission intensities of ICP OES aided by chemometrics in the geographical discrimination of mineral waters. Journal of Analytical Atomic Spectrometry 26 (2011) 852-860. Link

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A method for Ca, Fe, Ga, Na, Si and Zn determination in alumina by inductively coupled plasma optical emission spectrometry after aluminum precipitation. Spectrochimica Acta. Part B, Atomic Spectroscopy 66 (2011) 383-388. Link

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Electroanalytical determination of carbendazim by square wave adsorptive stripping voltammetry with a multiwalled carbon nanotubes modified electrode. Analytical Methods 3 (2001) 1202-1206. Link

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Indirect determination of sodium diclofenac, sodium dipyrone and calcium gluconate in injection drugs using digital image-based (webcam) flame emission spectrometric method. Analytical Methods 3 (2011) 1975-1980. Link

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Determination of the Mineral Composition of Watercress and Data Evaluation Using Multivariate Analysis. Analytical Letters 44 (2011) 1758-1768. Link

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Determination and Evaluation of the Mineral Composition of Obi (Cola acuminate). Biological Trace Element Research 143 (2011) 478-488. Link

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2010

Evaluation of the aniline chemical oxidation process using multiple simultaneous electrochemical responses. Electrochimica Acta 55 (2010) 3974-3978. Link

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Needle-like IrO2/Ag combined pH microelectrode. Electrochemistry Communications 12 (2010) 1703-1705. Link

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Systematic Evaluation of the Preparation of Conducting PANI/ABS Blends. Journal of Applied Polymer Science 116 (2010) 825-831. Link

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Determination of the mineral composition of fresh bovine milk from the milk producing areas located in the State of Sergipe in Brazil and evaluation employing exploratory analysis. Microchemical Journal 96 (2010) 37-41. Link

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Use of multivariate analysis techniques for the characterization of analytical results for the determination of the mineral composition of kale. Microchemical Journal 96 (2010) 352-356. Link

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Simultaneous determination of hydroquinone, resorcinol, phenol, m-cresol and p-cresol in untreated air samples using spectrofluorimetry and a custom multiple linear regression-successive projection algorithm. Talanta 83 (2010) 320-323. Link

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Classificação periódica: um exemplo didático para ensinar análise de componentes principais. Química Nova 33 (2010) 1594-1597. Link

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Determination of degree of polymerization of insulating paper using near infrared spectroscopy and multivariate calibration. Vibrational Spectroscopy 52 (2010) 154-157. Link

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2009

In Situ Soil Phosphorus Monitoring Probe Compared with Conventional Extraction Procedures. Communications in Soil Science and Plant Analysis, v. 40, p. 1282-1294, 2009. Link

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Nickel sorption capacity of ground xylem of Quercus ilex trees and effects of selected ligands present in the xylem sap. Journal of Plant Physiology, v. 166, p. 270-277, 2009. Link

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Introducing Factorial Design Concepts Using Experiments with Multi-Colored Chocolates. The Chemical Educator, v. 14, p. 200-203, 2009. Link

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DC conductivity study of polyaniline and poly(acrylonitrile-butadiene-styrene) blends. Synthetic Metals, v. 159, p. 2188-2190, 2009. Link

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2008

Multivariate optimization of a procedure for Cr and Co ultratrace determination in vegetal samples using GFAAS after cloud-point extraction. International Journal of Environmental Analytical Chemistry, v. 88, p. 131-140, 2008. Link

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Coconut coir as biosorbent for Cr(VI) removal from laboratory wastewater. Journal of Hazardous Materials, v. 159, p. 252-256, 2008. Link

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Development of low-cost metal oxide pH electrodes based on the polymeric precursor method. Analytica Chimica Acta, v. 616, p. 36-41, 2008. Link

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Effects of Wave Function Modifications on Calculated H-C and C(triple bond)C Stretching Frequencies. International Journal of Quantum Chemistry 108 (2008) 2374-2385. Link

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A Variable Elimination Method to Improve the Parsimony of MLR Models Using the Successive Projections Algorithm. Chemometrics and Intelligent Laboratory Systems 92 (2008) 83-91. Link

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Flow-batch technique for the simultaneous enzymatic determination of levodopa and carbidopa in pharmaceuticals using PLS and successive projections algorithm. Talanta 75 (2008) 950-958. Link

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2007

Effect of pre-treatment and supporting media on Ni(II), Cu(II), Al(III) and Fe(III) sorption by plant root material. Chemosphere (Oxford), v. 68, p. 537-545, 2007. Link

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Electrocatalysis of methanol, ethanol and formic acid using a Ru/Pt metallic bilayer. Journal of Power Sources, v. 163, p. 695-701, 2007. Link

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Soil Calcium and pH Monitoring Sensor System. Journal of Agricultural and Food Chemistry, v. 55, p. 4658-4663, 2007. Link

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Successive projections algorithm improving the multivariate simultaneous direct spectrophotometric determination of five phenolic compounds in sea water. Microchemical Journal 85 (2007) 194-200. Link

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A method for determination of COD in a domestic wastewater treatment plant by using near-infrared reflectance spectrometry of seston. Analytica Chimica Acta 588 (2007) 231-236. Link

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2006

Effects of pi bond type, Backbone Size and Halogen on Structural and Spectroscopic properties of Hydrogen Complexes of the X-HL Type Between Alkenes and Alkynes and Haloacids (HF and HCl). International Journal of Quantum Chemistry 106 (2006) 1009-1019. Link

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An Ab Initio Cluster-in-Lattice Model for the Luminescence of K2NbOF5 Crystal. Computational Materials Science 38 (2006) 410-417. Link

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2005

Decomposição de Amostras de Solos Assistida por Radiação Microondas: Estratégia para Evitar a Formação de Fluoretos Insolúveis. Revista Brasileira de Ciência do Solo, v. 29, n. 4, p. 547-553, 2005. Link

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Flow Injection Potentiometric Phytate Determination: Phosphorus Nutritional Evaluation on Seeds and Grains. Journal of Agricultural and Food Chemistry, American Chemical Society, v. 53, p. 7644-7648, 2005. Link

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Pattern recognition applied to mineral characterization of Brazilian coffees and sugar-cane spirits. Spectrochimica Acta. Part B, Atomic Spectroscopy, v. 60, p. 717-724, 2005. Link

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A Structural Model of La2O3-Nb2O5-B2O3 Glasses Based Upon Infrared and Luminescence Spectroscopy and Quantum Chemical Calculations. Journal of Non-Crystalline Solids 351 (2005) 3121-3126. Link

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2004

In-Soil Potassium Sensor System. Journal of Agricultural and Food Chemistry, v. 52, p. 5810-5815, 2004. Link

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2003

Development of a screen-printed thick-film nitrate sensor based on a graphite-epoxy composite for agricultural applications. Sensors and Actuators. B, Chemical, v. 88, p. 337-344, 2003. Link

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Luminescence and Energy Transfer in La2O3-Nb2O5-B2O3:M3+ (M = Bi, Eu, Dy) Glasses. Journal of Luminescence 105 (2003) 97-103. Link

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