Metal ions | 4 hours | 6 hours | 8 hours | 10 hours |
Pb | 254.77 | 301.50 | 333.33 | 406.50 |
Cr | 287.76 | 301.50 | 363.63 | 446.42 |
Ni | 1.81 | 2.68 | 3.54 | 4.37 |