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Table 5 Typical peak assignments for FTIR spectra of angiosperm wood (hardwood)

From: A review of analytical methods for assessing preservation in waterlogged archaeological wood and their application in practice

cm−1

Assignment

Component

Reference

898

C–H deformation

Cellulose

[91, 92]

Low MW carbohydrates

[83]

1040

C–O stretch

Cellulose/hemi-celluloses

[91, 92]

1158-1162

C–O–C vibration (identified at 1116 by Emandi et al. [96])

Cellulose/hemi-celluloses

[91, 92]

C–O vibration

Lignin and xylan

[96]

1230

C–O stretch (Methoxy)

Lignin, some hemi-cellulose contribution

[91, 96]

Cellulose

[92]

1268

C–O stretch (ring) and methoxyl groups

Lignin

[91, 96]

1325

C–H and C–O vibrations

Cellulose, syringyl groups in lignin

[91, 96]

C–O vibrations

Syringyl groups in lignin

[92]

1375

C–H deformation

Cellulose/hemicellulose

[91, 92, 96]

1425

C–H deformation

Cellulose and lignin

[91, 92]

1462

C–H deformation

Cellulose and lignin

[91, 92]

1505

C=C aromatic

Lignin

[91, 92]

1596

C=C aromatic

Lignin

[91, 92]

Conjugated C-O vibration

Lignin

[96]

1738

C=O (acetyl) xylans

Hemicellulose

[91, 92]

  1. Peaks relating only to either lignin or cellulose can be used to infer their relative composition