A spectroscopic method for determining lignin content of softwood and hardwood kraft pulps

Authors
Malkavaara, P Alen, R
Citation
P. Malkavaara et R. Alen, A spectroscopic method for determining lignin content of softwood and hardwood kraft pulps, CHEM INTELL, 44(1-2), 1998, pp. 287-292
Citations number
15
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
ISSN journal
01697439 → ACNP
Volume
44
Issue
1-2
Year of publication
1998
Pages
287 - 292
Database
ISI
SICI code
0169-7439(199812)44:1-2<287:ASMFDL>2.0.ZU;2-2
Abstract
A rapid method for determining the kappa number of unbleached and oxygen-de lignified kraft pulps in the range 3-35 is presented. This novel method was based on the multivariate analysis of VIS spectral data on pulp samples. T he calculated models and the test results indicated that partial least squa res (PLS) and principal component regression (PCR) models yielded similar r esults, PLS being slightly more accurate. It was also found that for practi cal purposes a separate model for each wood feedstock and delignification p rocess is needed. (C) 1998 Elsevier Science B.V. All rights reserved.