| Data from the literature [10] [11] | SOPAL | ||||||
| ETM | Finland | Austria | Switzerland | Canada | Germany | France | |
| Cr |
| 250 |
| 120 | 2 | 150 |
|
| Ni | 100 | 100 | 30 | 32 | 80 | 50 | 12.82 |
| Zn | 1500 | 1500 | 400 | 220 | 1000 | 300 |
|
| Cu | 600 | 250 | 100 | 100 | 70 | 100 | 19.77 |
| Cd | 3 | 8 | 1 | 1.6 | 1.5 | 2 | 0.1 |
| Pb | 150 | 100 | 120 | 60 | 150 | 100 | 1.14 |
| Hg | 2 |
| 1 | 0.5 | 1 | 1 |
|
| As | 50 | 20 |
| 14 | 40 |
|
|