| S.No | Phosphonate | Extraction efficiency (%) | |
| U | Th | ||
| 1. | DAAP | 86 | 75 |
| 2 | DBBP | 48 | 28 |
| 3 | DAHeP | 95 | 88 |
| 4 | DBHeP | 56 | 40 |
| 5. | DiABP | 66 | 50 |
| 6. | DiAAP | 75 | 60 |
| 7. | DiAHeP | 80 | 74 |