Carbon | Functional group (méq∙g−1) | pHZPC | ||||
Acid | Base | |||||
carboxylic | Lacton | Phenol | Total | Total | ||
CAA | 0.75 | 0.40 | 0.70 | 1.85 | 0.18 | 4.8 |
CAB | 0.00 | 0.35 | 0.00 | 0.35 | 1.18 | 8.4 |
CAS | 0.00 | 0.00 | 0.80 | 0.80 | 0.69 | 6.8 |