| Element |
FA1 |
FA2 |
FA3 |
| C |
8.69 |
25.35 |
13.54 |
| O |
30.80 |
33.15 |
23.90 |
| Na |
2.26 |
1.29 |
1.75 |
| Mg |
2.61 |
1.23 |
3.01 |
| Al |
3.59 |
8.83 |
4.28 |
| Si |
7.50 |
13.87 |
6.17 |
| P |
1.12 |
0.73 |
0.63 |
| S |
3.58 |
0.99 |
1.51 |
| Cl |
11.96 |
1.26 |
17.23 |
| K |
2.79 |
1.44 |
1.50 |
| Ca |
22.95 |
7.89 |
21.66 |
| Fe |
2.15 |
3.24 |
0.56 |
| LOI |
7.17 |
10.3 |
18.2 |
| |
heavy metals concentration (mg/kg) |
|
| Pb |
2943.5 (713.7)* |
1964.2 (70.1) |
1237.4 (214.1) |
| Cd |
142.2 (15.0) |
68.4 (14.8) |
74.7 (13.3) |
| Cr |
74.3 (21.4) |
93.7 (7.7) |
117.3 (34.3) |
| Zn |
9743.8 (1511.4) |
7512.5 (221.6) |
8053.4 (780.2) |
| Cu |
465.2 (43.2) |
542.7 (75.9) |
227.7 (21.1) |
| Ni |
74.9 (34.9) |
69.2 (33.7) |
55.9 (31.2) |
LOI - loss of ignition
*Values in parentheses are standard deviation of means of triplicate |
