Elements | Dhaka ng∙m−3 | Earth crust mg∙g−1 | Coal fly ash mg∙g−1 | Dhaka EF/CRUST | Dhaka EF/FLY |
As | 3.06 | 0.018 | 0.400 | 4 | 0 |
Cd | 6.28 | 0.00008 | 0.000 | 1908 | 0.0 |
Pb | 305.6 | 0.013 | 2.200 | 571 | 6 |
Cu | 11.98 | 0.055 | 0.300 | 5 | 2 |
Fe | 2057 | 50.00 | 85.00 | 1 | 1 |
Zn | 303.3 | 0.070 | 2.300 | 105 | 5 |