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Accumulated blanks from the reagents used in column chemistry, and procedural blanks for the full trace metal separation protocol
| Elements | Reagent (n = 3) | Procedural (n = 5) |
|---|---|---|
| AVE ± SD (ng) | AVE ± SD (ng) | |
| Cu | 0.044 ± 0.006 | 0.20 ± 0.06 |
| Ga | < 0.002 | 0.001 ± 0.001 |
| Fe | 0.37 ± 0.05 | 1.7 ± 0.3 |
| Zn | 0.64 ± 0.07 | 9.8 ± 0.2 |
| Cd | < 0.001 | < 0.001 |
