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Multivariate analysis of ICP OES calibration conditions for sequential extraction of metals ions. Author(s): NOGUEIRA, A. R. de A.; SOARES, F. S. C.; GROMBONI, C. F.; CARAPELLI, R.; FONTANARI, A. A. Sequential extraction procedures are normally applied to evaluate sediments, soils and plants. Repository: BDPA Publication year: 2009
Evaluation of univariate and multivariate calibration strategies for the direct determination of total carbon in soils by laser-induced breakdown spectroscopy: tutorial. Author(s): GUEDES, W. N.; BABOS, D. V.; COSTA, V. C.; MORAIS, C. P de; FREITAS, V. S.; STENIO, K.; XAVIER, A. A. P.; BORDUCHI, L. C. L.; VILLAS-BOAS, P. R.; MILORI, D. M. B. P. The correct choice of the calibration strategy method is a step that can ensure the accuracy of carbon determination in soils by laser-induced breakdown spectroscopy. In this paper, we evaluate and di... ... Repository: BDPA Publication year: 2023
Soil organic carbon determination using NIRS: evaluation of dichromate oxidation and dry combustion analysis as reference methods in multivariate calibration. Author(s): BELTRAME, K. K.; SOUZA, A. M. de; COELHO, M. R.; WINKLER, T. C. B.; SOUZA, W. E.; VALDERRAMA, P. Dichromate oxidation and dry combustion analysis were evaluated as reference methods to determine organic carbon in Brazilian soils using near infrared spectroscopy (NIRS) as an alternative. The main... ... Repository: BDPA Publication year: 2016
Monitoring vitamin C extraction using multivariate calibration models by NIR. Author(s): SILVA, L. M. H. da; RIBEIRO, L. P. D.; COSTA, B. C.; SILVA, E. de O.; MIRANDA, M. R. A. de Repository: BDPA Publication year: 2021
Analytical validation of a multivariate calibration method for determination of soil organic carbon by near infrared spectroscopy. Author(s): SOUZA, A. M. de; COELHO, M. R.; FONTANA, A.; WINKLER, T. C. B.; JUCÁ, N. M. C.; CASTRO, T. B. de; SHIMIDT, G. B.; VALDERRAMA, P.; POPPIA, R. J. Repository: BDPA Publication year: 2014
Experimento didático de quimiometria para calibração multivariada na determinação de paracetamol em comprimidos comerciais utilizando espectroscopia no infravermelho próximo: um tutorial, parte II. Author(s): SOUZA, A. M. de; BREITKREITZ, M. C.; FILGUEIRAS, P. R.; ROHWEDDER, J. J. R.; POPPI, R. J. The aim of this manuscript was to show the basic concepts and practical application of Partial Least Squares (PLS) as a tutorial, using the Matlab computing environment for beginners, undergraduate an... ... Repository: BDPA Publication year: 2013
Evaluation of laser induced breakdown spectroscopy for multielemental determination in soils under sewage sludge application. Author(s): FERREIRA, E. C.; MILORI, D. M. B. P.; FERREIRA, E. J.; SANTOS, L. M. dos; MARTIN NETO, L.; NOGUEIRA, A. R. de A. Laser induced breakdown spectroscopy (LIBS) is an atomic emission spectroscopy technique for simple, direct and clean analysis, with great application potential in environmental sustainability studies... ... Repository: BDPA Publication year: 2011
Predição dos teores de carbono e nitrogênio do solo utilizando espectroscopia de infravermelho próximo. Author(s): MARCHAO, R. L.; BECQUER, T.; BRUNET, D. A espectroscopia de reflectância no infravermelho próximo foi utilizada para prever os teores totais de carbono e nitrogênio do solo. Amostras de solo foram escaneadas em um instrumento monocromador. Repository: BDPA Publication year: 2011
Quantificação de cálcio, magnésio e ferro em folhas de soja através da técnica LIBS utilizando o one-point calibration. Author(s): BORDUCHI, L. C. L.; MILORI, D. M. B. P.; VILLAS-BOAS, P. R. Repository: BDPA Publication year: 2019
Quantificação de carbono em solos e nutrientes em folhas de soja através da técnica LIBS utilizando o one-point calibration. Author(s): BORDUCHI, L. C. L.; BOAS, P. R. V. No setor agroambiental, a quantificação elementar é de suma importância tanto para o monitoramento de carbono (C) em solos, visando estudos de sequestro de carbono pelo solo, quanto para análise nutri... ... Repository: BDPA Publication year: 2022

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