内标质量数 | 45 | 72 | ||||||
| Cr | Cu | Cd | Pb | Cr | Cu | Cd | Pb |
测量审核样品 | 61.7 | 66.7 | 3.06 | 945.8 | 57.4 | 62.1 | 2.84 | 878.2 |
质控样品 | 20.1 | 9.69 | 0.037 | 13.2 | 20.2 | 9.79 | 0.038 | 13.3 |
指定值 | 25 | 12.6 | 0.058 | 17.4 | 25 | 12.6 | 0.058 | 17.4 |
回收率 | 80% | 77% | 64% | 76% | 81% | 78% | 66% | 76% |
| ||||||||
内标质量数 | 115 | 209 | ||||||
| Cr | Cu | Cd | Pb | Cr | Cu | Cd | Pb |
测量审核样品 | 61.4 | 66.2 | 3.04 | 938.5 | 72.7 | 78.8 | 3.07 | 1123.9 |
质控样品 | 24.4 | 11.8 | 0.047 | 16.1 | 32.3 | 15.5 | 0.047 | 21.3 |
指定值 | 25 | 12.6 | 0.058 | 17.4 | 25 | 12.6 | 0.058 | 17.4 |
回收率 | 98% | 94% | 81% | 93% | 129% | 123% | 81% | 122% |