Table 11.
Vertical variations of major, minor and trace elements concentrations in fallen dust samples in El Nosel Village in May 2000
| Floors | Fallen dust (g/(m2×month)) | Concentration |
||||||||||
| SiO2 (%) | Al2O3 (%) | Fe2O3 (%) | MgO (%) | CaO (%) | K2O (%) | Na2O (%) | Mn (×10−6) | Co (×10−6) | Pb (×10−6) | Ni (×10−6) | ||
| 1 | 9.00 | 81.6 | 0.50 | 1.80 | 0.88 | 0.40 | 0.50 | 0.30 | 458.3 | 157.0 | BD | 91.3 |
| 2 | 14.00 | 83.0 | 0.65 | 1.60 | 0.60 | 0.35 | 0.60 | 0.25 | 500.0 | 94.6 | BD | 72.0 |
| 3 | 14.57 | 86.5 | 0.71 | 1.40 | 0.48 | 0.30 | 0.60 | 0.18 | 522.1 | 223.0 | BD | 102.0 |
| 4 | 10.05 | 83.6 | 0.68 | 1.35 | 0.45 | 0.30 | 0.40 | 0.20 | 480.0 | 213.0 | BD | 110.6 |
| 5 | 6.84 | 83.4 | 0.53 | 1.00 | 0.40 | 0.25 | 0.35 | 0.30 | 475.0 | 198.0 | BD | 0.53 |
| 6 | 3.23 | 82.0 | 0.50 | 0.80 | 0.43 | 0.30 | 0.30 | 0.33 | 465.0 | 56.2 | BD | 151.0 |
| Mean | 9.62 | 83.6 | 0.60 | 1.30 | 0.60 | 0.31 | 0.46 | 0.26 | 483.4 | 156.9 | BD | 96.7 |
BD: Below detection limit