Authors: Durig, D.T.¹; Esterle, J.S.²; Dickson, T.J.³; Durig, J.R.⁴

Source: Applied Spectroscopy, Volume 42, Issue 7, Pages 1177-1321 (September/October 1988) , pp. 1239-1244(6)

Publisher: Society for Applied Spectroscopy

Abstract:

Woody peats from Indonesia and Malaysia were examined by FT-IR spectroscopy to observe the variation in degree of humification between peat types and among botanical components and matrix material within a peat type. Results of the FT-IR analysis showed significant changes occurring in the 1600 and 1000 cm⁻¹ regions which are interpreted to represent lignin and lignocellulose, respectively. These components were considered to describe variations in degree of humification. Between peat types the intensity of the lignocellulose region decreased accordingly between fibric, hemic, and sapric samples. Within a sample, variations in the relative amount of lignocellulose in the three different size fractions of a sample were observed that could generally, but not always, be related to peat type. In all peat types the coarse material still contained some lignocellulosic component, whereas the finer fractions contained variably less to no lignocellulose. The lignin-dominated composition of the finer matrix material suggests that these peats are derived mainly from trees and woody vines with little input from herbaceous, less decay-resistant (cellulose-dominant) plant material.

Keywords: FT-IR spectroscopy of peat, lignin, and cellulose

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702884429986

Affiliations: 1: Departments of Chemistry and Physics, University of the South, Sewanee, Tennessee 37375 2: Coal Research Group, University of Kentucky, Lexington, Kentucky 40508 3: Department of Chemistry, University of South Carolina, Columbia, South Carolina 29208; present address: Tennessee Eastman, Kingsport, TN 37662 4: Department of Chemistry, University of South Carolina, Columbia, South Carolina 29208

Publication date: 1988-09-01

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