Answers are grounded in this paper and cite their sources.
Article Determination of Phenolic Hydroxyl Group Contents in Milled Wood Lignins by FTIR Spectroscopy Applying Partial Least-Squares (PLS) and Principal Components Regression (PCR) was published on January 1, 1993 in the journal Holzforschung (volume 47, issue 1).
No takes yet. Share an insight, caveat, or question.
Faix et al. (1993) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: