Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/11221
Title: Potencial da espectroscopia no infravermelho próximo para distinção de carvão de madeira de Eucalyptus e nativa
Other Titles: Potential of near infrared spectroscopy for charcoal distinction of Eucalyptus and native
Authors: Hein, Paulo Ricardo Gherardi
Napoli, Alfredo
Resende, Eliane Cristina de
Nunes, Cleiton Antônio
Trugilho, Paulo Fernando
Keywords: Carvão – Análise
Análise espectral
Análise multivariada
Coal – Analysis
Spectral analysis
Multivariate analysis
Issue Date: 3-Jun-2016
Publisher: Universidade Federal de Lavras
Citation: RAMALHO, F. M. G. Potencial da espectroscopia no infravermelho próximo para distinção de carvão de madeira de Eucalyptus e nativa. 2016. 64 p. Dissertação (Mestrado em Ciência e Tecnologia da Madeira) - Universidade Federal de Lavras, Lavras, 2016.
Abstract: The objective of this study was to evaluate the potential of near infrared spectroscopy (NIRS) associated with multivariate statistics to distinguish coal produced from wood of planted and native forests. Timber forest species from the C errado (Cedrela sp., Aspidosperma sp., Jacaranda sp. and unknown species) and Eucalyptus clones from forestry companies (Vallourec and Cenibra) were carbonized in the final temperatures of 300, 500 and 700°C. In each heat treatment were carbonized 15 specimens of each vegetal material totaling 270 samples (3 treatments x 15 reps x 6 materials) produced in 18 carbonization (3 treatments x 6 materials). The acquisition of the spectra of coals in the near infrared using a spectrometer was performed. Principal Component Analysis (PCA) and Partial Least Squares Regression (PLS-R) were carried out in the spectra. NIR Spectroscopy associated with PCA was not able to differentiate charcoals produced from native and planted woods when utilizing all carbonized samples at different temperatures in the same analysis; The PCA of all charcoals was able to distinguish the samples depending on temperature in which they were carbonized. However, the separation of native and planted charcoal was possible when the samples were analyzed separately by final temperature. The prediction of native or planted classes by PLS-R presented better performance for samples carbonized at 300°C followed by those at 500°C, 700°C and for all together.
URI: http://repositorio.ufla.br/jspui/handle/1/11221
Appears in Collections:Ciência e Tecnologia da Madeira - Mestrado (Dissertações)



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