ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)

The application of near-infrared (NIR) spectroscopy as a tool for the rapid determination of pulp yield and basic density of Eucalyptus globulus wood is described. Previously, we had examined these properties using mid-infrared (MIR) spectroscopy. More precise results were obtained based on NIR spec...

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Autores principales:	RUIZ,JOSÉ, RODRIGUEZ,JAIME, BAEZA,JAIME, FREER,JUANITA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2005
Materias:	Near-infrared spectroscopy Quant+ E.globulus
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000300007
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spelling	oai:scielo:S0717-970720050003000072005-11-23ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)RUIZ,JOSÉRODRIGUEZ,JAIMEBAEZA,JAIMEFREER,JUANITA Near-infrared spectroscopy Quant+ E.globulus The application of near-infrared (NIR) spectroscopy as a tool for the rapid determination of pulp yield and basic density of Eucalyptus globulus wood is described. Previously, we had examined these properties using mid-infrared (MIR) spectroscopy. More precise results were obtained based on NIR spectra where the calibrations models were more robust and better predictors than obtained for the MIR spectra. Twenty-seven samples were used for establishing the correlations (calibration) and three for making predictions based on the calibration (validation). Quant+ chemometrics software was used to obtain the calibration and prediction through principal components regression (PCR). A PCR model based on NIR spectra gave fits with a standard error of prediction (SEP) of 14.3 kg m-3 and 1.57% for basic density and pulping yield, respectively. Using PCR-MIR, the SEP values obtained were 21.44 kg m-3 and 1.73%. The method readily predicts yield (correlation coefficient: R²= 0.51), and density (correlation coefficient: R² = 0.94) from spectral NIR measurement. Both NIR and MIR performed better in the analysis of the density property than for the pulp yield of the hardwood samplesinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.50 n.3 20052005-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000300007en10.4067/S0717-97072005000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Near-infrared spectroscopy Quant+ E.globulus
spellingShingle	Near-infrared spectroscopy Quant+ E.globulus RUIZ,JOSÉ RODRIGUEZ,JAIME BAEZA,JAIME FREER,JUANITA ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)
description	The application of near-infrared (NIR) spectroscopy as a tool for the rapid determination of pulp yield and basic density of Eucalyptus globulus wood is described. Previously, we had examined these properties using mid-infrared (MIR) spectroscopy. More precise results were obtained based on NIR spectra where the calibrations models were more robust and better predictors than obtained for the MIR spectra. Twenty-seven samples were used for establishing the correlations (calibration) and three for making predictions based on the calibration (validation). Quant+ chemometrics software was used to obtain the calibration and prediction through principal components regression (PCR). A PCR model based on NIR spectra gave fits with a standard error of prediction (SEP) of 14.3 kg m-3 and 1.57% for basic density and pulping yield, respectively. Using PCR-MIR, the SEP values obtained were 21.44 kg m-3 and 1.73%. The method readily predicts yield (correlation coefficient: R²= 0.51), and density (correlation coefficient: R² = 0.94) from spectral NIR measurement. Both NIR and MIR performed better in the analysis of the density property than for the pulp yield of the hardwood samples
author	RUIZ,JOSÉ RODRIGUEZ,JAIME BAEZA,JAIME FREER,JUANITA
author_facet	RUIZ,JOSÉ RODRIGUEZ,JAIME BAEZA,JAIME FREER,JUANITA
author_sort	RUIZ,JOSÉ
title	ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)
title_short	ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)
title_full	ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)
title_fullStr	ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)
title_full_unstemmed	ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)
title_sort	estimating density and pulping yield of e. globulus wood: comparison of near-infrared (nir) and mid-infrared (mir)
publisher	Sociedad Chilena de Química
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000300007
work_keys_str_mv	AT ruizjose estimatingdensityandpulpingyieldofeglobuluswoodcomparisonofnearinfrarednirandmidinfraredmir AT rodriguezjaime estimatingdensityandpulpingyieldofeglobuluswoodcomparisonofnearinfrarednirandmidinfraredmir AT baezajaime estimatingdensityandpulpingyieldofeglobuluswoodcomparisonofnearinfrarednirandmidinfraredmir AT freerjuanita estimatingdensityandpulpingyieldofeglobuluswoodcomparisonofnearinfrarednirandmidinfraredmir
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ESTIMATING DENSITY AND PULPING YIELD OF E. globulus WOOD: COMPARISON OF NEAR-INFRARED (NIR) AND MID-INFRARED (MIR)

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