Cu2+ | Zn2+) | Fe3+ | Al3+ | Ni+ | Cr+ | K+ | Pb+ | Cl- | NO-2 | NO-3 | SO2-4 |
0.001 | 0.002 | 0.002 | 0.003 | 0.001 | 0.001 | 0.002 | 0.003 | 0.01 | 0.02 | 0.01 | 0.02 |