Table 7 The measurement result of Au element in soil samples of actual Au mining area
From: Gold determination in soil by ICP-MS: comparison of sample pretreatment methods
Sample | Method | Average value (ng/g) | RSD (%) | added amount (ng/g) | Measurement value (ng/g) | Recovery rate (%) |
|---|---|---|---|---|---|---|
A1 | I | 180.47 | 1.8 | 200.00 | 373.02 | 96.3 |
II | 190.19 | 3.4 | 200.00 | 399.04 | 104.4 | |
A2 | I | 97.26 | 1.7 | 100.00 | 195.59 | 98.3 |
II | 103.64 | 2.1 | 100.00 | 200.97 | 97.3 | |
A3 | I | 74.21 | 1.3 | 100.00 | 175.88 | 101.7 |
II | 78.09 | 0.7 | 100.00 | 177.39 | 99.3 | |
B1 | I | 4.89 | 2.9 | 5.00 | 9.73 | 96.8 |
II | 5.20 | 2.3 | 5.00 | 10.08 | 97.6 | |
B2 | I | 2.45 | 1.2 | 2.00 | 4.36 | 95.5 |
II | 2.56 | 3.6 | 2.00 | 4.50 | 96.5 | |
B3 | I | 1.09 | 5.1 | 1.00 | 2.10 | 101.0 |
II | 1.13 | 3.1 | 1.00 | 2.12 | 99.0 |