Table 7.
The penalty points for the determination of AZI and LEVO for the proposed methods and the reported methods.
| Reagents/instruments | Penalty points |
||
|---|---|---|---|
| Proposed Methods | Reported method [6] | Reported method [7] | |
| Methanol | 6 | - | 18 |
| Acetonitrile | - | 4 | - |
| Chloroform | - | 2 | - |
| Benzene | - | 6 | - |
| Ortho-phosphoric acid | - | - | 6 |
| Perchloric acid | 4 | - | - |
| DDQ | - | 2 | - |
| Chloranilic acid (p-CA) | - | 1 | - |
| Crystallization and filtration | - | 1 | - |
| UV-VIS spectrophotometry | 0 | 0 | - |
| HPLC | - | - | 1 |
| Occupational hazard | 0 | 0 | 0 |
| Waste >10mL | 5 | 5 | 5 |
| Total penalty points | 15 | 21 | 30 |
| Analytical Eco-Scale total score | 85 | 79 | 70 |