Table 2 Ion contents in fly Ash and bottom Ash (mg/kg).
Elements or compounds | Fly ash | Bottom ash | The background of soil in China | The background of soil in Shanxi Province | ||
|---|---|---|---|---|---|---|
ash outlet | ash storage yard | taphole | slag dump | |||
Cd | 4.73 | 3.88 | 3.31 | 3.28 | 0.074 | 0.102 |
Pb | 65.8 | 60.9 | 40.8 | 42.4 | 23.6 | 14.7 |
Cu | 45.4 | 44.7 | 32.1 | 31.8 | 20.0 | 22.9 |
Cr | 74 | 69.9 | 68.0 | 68.6 | 53.9 | 55.3 |
Ni | 38.1 | 32 | 23.1 | 24.8 | 23.4 | 29.9 |
As | 12.7 | 10.8 | 4.06 | 3.76 | 9.2 | 9.1 |
Hg | 1.06 | 0.68 | 0.56 | 0.56 | 0.040 | 0.023 |
Se | 7.60 | 4.98 | 0.46 | 0.60 | 0.216 | 0.16 |
Fluoride | 214 | 145 | 85.8 | 47.4 | 440 | 482 |
Chloride | 770 | 700 | 700 | 660 | 150① | |
Sulfate | 9.48 × 104 | 9.75 × 104 | 7.63 × 104 | 7.29 × 104 | 672① | |
