| 加入浓度 | 加入量(mg) | 测得量(mg) | 回收率(%) | 平均回收率(%) |
| 80% | 20 | 19.8 | 99 | 99.17 |
| 20 | 19.8 | 99 | ||
| 20 | 19.9 | 99.5 | ||
| 100% | 25 | 24.8 | 99.2 | 99.46 |
| 25 | 24.9 | 99.6 | ||
| 25 | 24.9 | 99.6 | ||
| 120% | 30 | 29.7 | 99 | 99.3 |
| 30 | 29.9 | 99.7 | ||
| 30 | 29.8 | 99.3 |