Table 2 FTIR spectral band assignments for CO, CL, ZO, ZL, FO, FL and LO before use.
Wave numbers (cm−1) | Assignments | Sorbents | ||||||
|---|---|---|---|---|---|---|---|---|
CO | CL | ZO | ZL | FO | FL | LO | ||
3200–3700 | O-H stretching | 3346 | 3337 | 3303 | 3331 | |||
2700–3000 | C-Hn stretching | 2884 | 2912 | 2912 | ||||
1780–1710 | Carboxylic Acid C=O stretching | 1737 | 1698 | 1723 | 1723 | 1737 | ||
1750–1630 | Ketone, Ester, Amide C=O Stretching | 1688 | 1672 | 1606 | 1644 | 1640 1644 | 1686 1421 | 1599 |
1000–1200 | C=O/C-O-C | 1229 | 1236 | 1242 | 1236 | |||
750–870 | C-N/R-O-C/R-O-CH3 stretching aromatic C-H | 1029 | 1029 | 1029 | 1008 | 1008 | 1022 868 | |
