Table 2.
Interpretation of FT-IR data of TCE-treated, benzene-treated, and peptone-grown (control) PM102 biomasses. Functional groups were assigned to respective wavenumbers with reference to Coates (2000) [27].
| Group frequency (cm−1) | Functional group |
|---|---|
| Treated (TCE-induced biomass) | |
| 536 | Aliphatic bromo C–Br stretch |
| 874 | Epoxy ring |
| 1072 | Cyclic ethers C–O stretch |
| 1251 | Skeletal C–C vibrations |
| 1394 | Tertiary alcohol OH bend |
| 1555 | Carboxylic acid |
| 1644 | Amide or secondary amine NH bend |
| 2932 | Methylene stretch |
| 3414 | Hydroxy group H bonded OH stretch |
| Control (peptone-grown biomass) | |
| 527 | Aliphatic bromo C–Br stretch |
| 699 | Aliphatic chloro C–Cl stretch |
| 1112 | Cyclic ethers C–O stretch |
| 1250 | Skeletal C–C vibrations |
| 1416 | Vinyl C–H in plane bend |
| 1639 | Amide or secondary amine NH bend |
| 2947 | Methyl C–H asym./sym. stretch |
| 3421 | Hydroxy group H bonded OH stretch |
| Treated (benzene-treated biomass) | |
| 582 | Aliphatic bromo C–Br stretch |
| 749 | 1,2-Disubstitution (ortho) aromatic ring |
| 1027 | Cyclohexane ring vibrations |
| 1250 | Skeletal C–C vibrations |
| 1446 | Aromatic ring stretch |
| 1639 | Amide or secondary amine NH bend |
| 2253 | Isocyanate (–N=C=O asym. stretch) |
| 2947 | Methyl C–H asym./sym. stretch |
| 3421 | Hydroxy group H bonded OH stretch |