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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > December  >
In the Laboratory
Identifying Softwoods and Hardwoods by Infrared Spectroscopy
Brady Barker and Noel L. Owen
Department of Chemistry & Biochemistry, Brigham Young University, Provo, UT 84602
Cover
December 1999
Vol. 76 No. 12
p. 1706
Abstract
Infrared spectra of 45 softwoods and hardwoods have been recorded. The wavenumber values of the carbonyl stretching vibration and one of the ring-breathing modes of lignin are used to distinguish softwoods from hardwoods. The differences between the absorption bands for the softwoods and hardwoods in each instance are shown to be statistically significant. A possible explanation of these spectral differences in terms of the chemical composition of the woods is proposed.
More Information
*  Citation
 Barker, Brady; Owen, Noel L. J. Chem. Educ. 1999 76 1706.
*  Keywords
 Carbohydrates; Instrumental Methods; IR Spectroscopy; Plant Chemistry; Laboratory Instruction
*  History
 Created:
Last Updated:		 November 10, 1999
June 23, 2005
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