Table 2.
Recovery of various elements in different elution steps of the trace metal separation protocol
| Elements | 11 M CH3COOH +4 M HCl + H2O2 6 mL | 5 M HCl + H2O2 6.4 mL | 1 M HCl 2.8 mL | 2 M HNO3 + 0.1 M HBr 2.4 mL | 2 M HNO3 2 mL | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| (Matrix) | (Cu fraction) | (Fe fraction) | (Zn fraction) | (Cd fraction) | ||||||
| AVE | ±SD* | AVE | ±SD | AVE | ±SD | AVE | ±SD | AVE | ±SD | |
| Cu | 0.1 | ± 0.1% | 99.8 | ± 0.1% | 0.1 | ± 0.1% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| Fe | 0.1 | ± 0.1% | 0.2 | ± 0.4% | 98.8 | ± 0.3% | 0.7 | ± 0.3% | 0.1 | ± 0.0% |
| Zn | 0.1 | ± 0.0% | 0.3 | ± 0.6% | 0.7 | ± 1.5% | 98.9 | ± 2.1% | 0.0 | ± 0.0% |
| Cd | 0.0 | ± 0.0% | 0.1 | ± 0.2% | 0.1 | ± 0.2% | 3.7 | ± 1.1% | 96.1 | ± 1.4% |
| Na | 100.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| Mg | 99.5 | ± 0.4% | 0.2 | ± 0.3% | 0.1 | ± 0.1% | 0.2 | ± 0.3% | 0.0 | ± 0.0% |
| Ca | 99.9 | ± 0.1% | 0.1 | ± 0.1% | 0.0 | ± 0.1% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| Al | 99.0 | ± 1.0% | 0.2 | ± 0.1% | 0.5 | ± 0.5% | 0.2 | ± 0.2% | 0.1 | ± 0.2% |
| Ni | 100.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| V | 99.6 | ± 0.2% | 0.4 | ± 0.2% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| Cr | 99.4 | ± 0.7% | 0.5 | ± 0.7% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| P | 98.5 | ± 0.8% | 0.8 | ± 0.5% | 0.5 | ± 0.5% | 0.1 | ± 0.1% | 0.1 | ± 0.1% |
| S | 91.1 | ± 0.4% | 8.8 | ± 0.4% | 0.1 | ± 0.1% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
| Ga | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 99.5 | ± 0.1% | 0.4 | ± 0.1% | 0.1 | ± 0.0% |
| Mo | 3.6 | ± 3.9% | 27.1 | ± 4.1% | 46.9 | ± 4.1% | 21.3 | ± 4.8% | 1.1 | ± 0.3% |
| Sn | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.1% | 98.7 | ± 0.5% | 1.3 | ± 0.5% |
| Ti | 71.2 | ± 3.1% | 27.3 | ± 3.0% | 0.8 | ± 0.1% | 0.5 | ± 0.1% | 0.2 | ± 0.0% |
| Mn | 0.2 | ± 0.5% | 99.8 | ± 0.5% | 0.0 | ± 0.0% | 0.0 | ± 0.0% | 0.0 | ± 0.0% |
*
Values are calculated from results of five replicate tests