Table 6 The measurement result of Au element in five CRMs with two digestion methods
From: Gold determination in soil by ICP-MS: comparison of sample pretreatment methods
CRM | Standard value (ng/g) | Method | Average value (ng/g) | ΔlgC (%) | RE (%) | RSD (%) |
|---|---|---|---|---|---|---|
GBW07805 | 0.85 | I | 0.82 | 1.6 | 3.5 | 6.2 |
II | 0.87 | 1.0 | 2.4 | 1.8 | ||
GBW07806 | 3.10 | I | 2.97 | 1.9 | 4.2 | 3.4 |
II | 3.29 | 2.6 | 6.1 | 1.7 | ||
GBW07246 | 20.80 | I | 21.72 | 1.9 | 4.4 | 5.1 |
II | 23.03 | 4.4 | 10.7 | 3.1 | ||
GBW07247 | 50.00 | I | 50.18 | 0.2 | 0.4 | 2.3 |
II | 53.89 | 3.3 | 7.8 | 1.3 | ||
GBW07248 | 100.00 | I | 105.50 | 2.3 | 5.5 | 0.7 |
II | 110.35 | 4.3 | 10.4 | 1.7 |