| 元素 | 样品/(mg/L) | 添加量/(mg/L) | 回收率/% | 相对标准偏差/% |
| Cu | 21.1 | 2.00 | 100.9 | 0.3 |
| Fe | 56.4 | 2.00 | 102.6 | 1.5 |
| Zn | 23.8 | 2.00 | 96.3 | 0.5 |
| Mn | 1.10 | 2.00 | 92.90 | 0.9 |
| Co | 0.49 | 0.10 | 90.8 | 4.8 |
| Ni | 0.07 | 0.02 | 100.7 | 3.2 |
| Pb | 0.05 | 0.01 | 98.7 | 2.8 |
| Cd | 0.00 | 0.00 | 0.00 | 0.0 |