Rapid characterization of wood pulp lignin by fourier transform Raman spectroscopy

Amin Ibrahim, Philip B. Oldham, Terrance E. Conners, Tor P. Schultz

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


FT-Raman spectroscopy is used for the rapid measurement of wood pulp lignin. A total of 23 western softwood pulp samples with known kappa numbers (10-38) are used. Each sample is divided into three portions and scanned separately. The integrated area of the lignin band at approximately 1600 cm-1 is ratioed against the integrated area of the cellulose bands in the 1200-1010 cm-1 region and correlated to known kappa numbers. The measured ratios behave linearly with the kappa number (r = 0.99) and can be reproducibly determined with an error of approximately 2% or less. The data are presented and discussed in view of the potential for at-line analysis of lignin associated with chemical delignification of wood pulp.

Original languageEnglish
Pages (from-to)393-402
Number of pages10
JournalMicrochemical Journal
Issue number3
StatePublished - Jul 1997

Bibliographical note

Funding Information:
Funding for this research was provided through the USDA-Wood Utilization Research Program, the National Science Foundation EPSCoR Grant EHR 9108767, the State of Mississippi, and Mississippi State University. We thank Bob Horton and Bill Whalley for contributing the samples for this study, and acknowledge the technical assistance of Mr. David C. Chambliss and Mr. Lee Turner.

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy


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