Band number |
Wavenumber (cm-1) |
Assignment |
References |
1 |
3695 |
Clay minerals |
1, 4 |
2 |
3626 |
Clay minerals, Phenols O – H***** |
1, 4, 8 |
3 |
3300 |
O-H Vibration, Cellulose O-H, N-H |
2, 6 |
4 |
2927 |
Aliphatic C-H Vibration, Lipids C-H**** |
5, 7,
8 |
5 |
2855 |
Alkenes |
4 |
6 |
1730 |
Vibration of C = O in unconjugated ketones and free
aldehydes, hemicellulose |
6 |
7 |
1630 |
Vibration of aromatic C = C ***, Nitrogenous compounds,
Proteins (Amide I, II) C = O; C = N; N-H |
2, 7 |
8 |
1608 |
Vibration of aromatic rings C = C ***, Lignin |
2, 6,
9 |
9 |
1516, 1510 |
Vibration of aromatic C = C ***, Lignin |
6,
8 |
10 |
1414 |
CH2, C-OH vibration |
2 |
11 |
1378 |
Vibration of C-H |
6,7 |
12 |
1240 |
Vibration of C-O, C-O Carbohydrates *, Amide III (Protein)
and C-N Nucleic Acids, PO2 ** |
4, 7, 8 |
13 |
1157 |
Asymmetric C – O – C vibration, C-O * carbohydrates,
cellulose, and hemicellulose |
6, 7, 8 |
14 |
1118 |
C-O vibration of polysaccharides or polysaccharides as
substances, C-O Carbohydrates * |
3, 7, 8 |
15 |
909 |
Minerals, Carbohydrates C-O * |
1, 7, 8 |
16 |
890 |
Minerals |
1 |