Introduction | Fields and codes | Detection limits | Grid co-ordinates
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Values in ppm assigned to samples below the limit of detection are:
| ppm | |
|---|---|
| Cu | 2 |
| Pb | 2 |
| Zn | 2 |
| Ag | 0.1 |
| Co | 3 |
| Ni | 2 |
| Mn | 30 |
Absent data are indicated in the database by -1.