Stations | Concentrations x ± S.D (µg∙g−1) | |||||
Fe | Cu | Pb | Zn | Cd | Ni | |
Tafsout | 999.16 ± 314.76 | 0.85 ± 0.25 | 3.06 ± 4.41 | 0.72 ± 2.04 | 0.36 ± 0.54 | 2.13 ± 0.49 |
Agla | 1406.25 ± 423.29 | 1.11 ± 0.2 | 2.78 ± 5.89 | 0.53 ± 1.05 | 0.16 ± 0.05 | 2.01 ± 0.5 |
Guidelines* | 40,800 | 30.8 | 26.0101 | 0.153 | 39.4 |