Table 3. Mean elemental composition in mg kg-1 and standard errors (SE). The values of columns 0-1, 1-2, 2-3 and 3-4 represent the depth of the sample in mm and correspond to the soil within the reddish-yellow layer. The soil samples at 4.6, 13-15, 28-30 and 100-150 mm lay below this layer. T represents the sample of tailings in contact with the reddish-yellow layer and UCS the uncontaminated soil (0-100 mm).
|
|
0 - 1 |
1 - 2 |
2 - 3 |
3 - 4 |
4 - 6 |
13 - 15 |
28 - 30 |
100 - 150 |
UCS |
T |
||||||||||||||||||
|
|
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
|
S.E. |
Mean |
S.E. |
Mean |
S.E. |
|
Pb |
1482.1 |
*** |
86.2 |
1168.5 |
** |
146.4 |
779.7 |
** |
94.3 |
470.0 |
** |
82.2 |
80.0 |
|
12.5 |
114.7 |
|
12.4 |
90.0 |
|
7.8 |
98.3 |
|
12.3 |
81.6 |
6.1 |
9507.3 |
1047.3 |
|
Zn |
6939.5 |
*** |
153.0 |
7527.1 |
*** |
419.1 |
10200.0 |
*** |
424.7 |
23090.0 |
*** |
461.8 |
6178.1 |
*** |
155.5 |
2043.2 |
*** |
73.7 |
673.5 |
*** |
35.6 |
294.3 |
** |
31.9 |
100.4 |
3.0 |
8063.4 |
426.7 |
|
As |
2233.7 |
*** |
97.7 |
1008.4 |
*** |
73.1 |
620.8 |
*** |
46.9 |
280.4 |
** |
36.4 |
31.4 |
* |
1.3 |
44.0 |
*** |
1.4 |
28.6 |
|
1.1 |
31.4 |
|
1.6 |
25.8 |
1.3 |
4094.1 |
165.5 |
|
Cu |
3387.0 |
*** |
147.0 |
4557.4 |
*** |
456.5 |
7835.0 |
*** |
1000.3 |
11480.0 |
*** |
989.8 |
131.4 |
*** |
4.4 |
165.6 |
*** |
12.5 |
144.7 |
*** |
6.0 |
38.2 |
** |
2.3 |
25.7 |
0.4 |
2175.8 |
205.6 |
|
Sb |
22.9 |
** |
2.7 |
10.6 |
*** |
1.0 |
7.2 |
*** |
0.3 |
6.3 |
*** |
0.4 |
2.8 |
** |
0.2 |
4.4 |
*** |
0.3 |
3.4 |
** |
0.3 |
3.3 |
** |
0.2 |
1.9 |
0.1 |
820.1 |
68.8 |
|
Ba |
211.4 |
|
17.8 |
209.2 |
|
15.1 |
210.0 |
|
48.6 |
218.6 |
|
8.7 |
246.4 |
|
12.7 |
255.0 |
|
12.6 |
251.3 |
|
29.1 |
273.5 |
|
19.7 |
296.3 |
10.7 |
794.3 |
72.8 |
|
Mn |
334.2 |
|
7.4 |
359.8 |
|
16.2 |
364.0 |
|
4.5 |
648.3 |
|
81.2 |
804.8 |
|
67.1 |
756.7 |
|
136.3 |
734.2 |
|
55.1 |
789.3 |
|
19.6 |
816.3 |
120.5 |
723.8 |
34.2 |
|
Bi |
12.7 |
*** |
1.4 |
7.1 |
*** |
0.5 |
4.4 |
*** |
0.3 |
2.2 |
*** |
0.2 |
0.5 |
* |
0.0 |
0.5 |
|
0.0 |
0.4 |
|
0.0 |
0.4 |
|
0.0 |
0.4 |
0.0 |
85.9 |
8.1 |
|
Tl |
5.9 |
*** |
0.2 |
4.2 |
*** |
0.1 |
4.4 |
*** |
0.4 |
4.3 |
*** |
0.1 |
2.6 |
*** |
0.1 |
1.1 |
*** |
0.0 |
0.8 |
** |
0.1 |
0.9 |
** |
0.1 |
0.4 |
0.0 |
66.8 |
4.7 |
|
Cr |
43.0 |
|
3.0 |
44.0 |
|
10.1 |
41.7 |
|
7.6 |
41.3 |
|
2.4 |
47.7 |
|
3.4 |
48.6 |
|
2.7 |
62.0 |
|
6.5 |
41.6 |
|
4.1 |
93.4 |
22.7 |
63.4 |
5.4 |
|
Co |
9.8 |
|
0.4 |
9.8 |
|
0.3 |
11.1 |
|
0.3 |
19.0 |
*** |
0.1 |
21.8 |
*** |
0.8 |
15.5 |
|
0.7 |
15.2 |
|
0.4 |
15.5 |
|
1.1 |
14.9 |
0.2 |
53.7 |
2.6 |
|
Cd |
12.0 |
*** |
1.4 |
12.6 |
*** |
0.5 |
13.5 |
*** |
0.9 |
20.0 |
*** |
0.2 |
20.8 |
*** |
0.9 |
3.2 |
*** |
0.4 |
1.2 |
*** |
0.0 |
0.8 |
*** |
0.0 |
0.3 |
0.0 |
36.0 |
4.1 |
|
V |
59.8 |
|
4.9 |
60.2 |
|
6.2 |
58.9 |
|
10.6 |
57.9 |
|
4.2 |
66.6 |
|
6.0 |
70.7 |
|
6.1 |
92.5 |
|
8.0 |
82.1 |
|
16.6 |
130.2 |
24.9 |
34.8 |
1.8 |
|
Ni |
17.1 |
|
4.7 |
17.9 |
|
2.0 |
19.1 |
|
1.9 |
23.6 |
|
1.5 |
25.0 |
|
2.0 |
23.0 |
|
1.4 |
25.7 |
|
1.4 |
22.8 |
|
2.1 |
33.0 |
1.9 |
19.9 |
2.5 |
|
Mo |
0.4 |
|
0.1 |
0.4 |
|
0.1 |
0.4 |
|
0.0 |
0.4 |
|
0.1 |
0.3 |
|
0.0 |
0.4 |
|
0.0 |
0.5 |
|
0.0 |
0.4 |
|
0.2 |
1.0 |
0.1 |
8.5 |
1.2 |
|
Sn |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.3 |
|
0.0 |
1.1 |
|
0.1 |
0.4 |
|
0.0 |
0.4 |
|
0.1 |
0.5 |
0.1 |
6.1 |
1.0 |
|
Se |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
0.2 |
0.2 |
5.3 |
0.5 |
|
Y |
9.7 |
|
2.7 |
11.5 |
|
0.9 |
12.7 |
|
1.0 |
18.0 |
|
1.7 |
15.2 |
|
2.1 |
15.6 |
|
1.4 |
18.9 |
|
1.6 |
19.4 |
|
1.2 |
20.3 |
1.5 |
5.2 |
0.8 |
|
Th |
6.2 |
|
0.4 |
7.2 |
|
0.7 |
6.6 |
|
0.7 |
6.8 |
|
0.6 |
8.3 |
|
0.9 |
7.9 |
|
0.5 |
9.2 |
|
0.2 |
8.2 |
|
0.6 |
9.6 |
0.5 |
3.7 |
0.1 |
|
In |
6.5 |
*** |
0.3 |
5.2 |
*** |
0.2 |
3.0 |
*** |
0.2 |
1.1 |
** |
0.2 |
0.1 |
|
0.0 |
0.1 |
|
0.1 |
0.1 |
|
0.0 |
0.1 |
|
0.0 |
0.1 |
0.0 |
2.9 |
0.1 |
|
Hg |
0.5 |
|
0.2 |
0.3 |
|
0.1 |
0.2 |
|
0.1 |
0.2 |
|
0.1 |
0.1 |
|
0.0 |
0.1 |
|
0.0 |
0.3 |
|
0.1 |
0.2 |
|
0.0 |
0.4 |
0.1 |
2.6 |
1.0 |
|
Sc |
7.0 |
|
0.5 |
7.6 |
|
1.5 |
7.5 |
|
1.4 |
7.2 |
|
0.5 |
7.0 |
|
0.2 |
7.6 |
|
0.5 |
8.3 |
|
1.4 |
7.9 |
|
0.9 |
17.6 |
5.0 |
2.2 |
0.3 |
|
U |
1.6 |
|
0.3 |
2.2 |
|
0.6 |
3.3 |
|
0.3 |
4.0 |
|
0.3 |
1.6 |
|
0.1 |
1.5 |
|
0.2 |
1.9 |
|
0.2 |
1.6 |
|
0.3 |
1.5 |
0.3 |
2.2 |
0.3 |
|
Be |
1.3 |
|
0.5 |
1.5 |
|
0.2 |
2.0 |
|
0.1 |
2.0 |
|
0.1 |
0.8 |
|
0.1 |
1.4 |
|
0.1 |
1.5 |
|
0.2 |
1.9 |
|
0.1 |
2.0 |
0.3 |
0.6 |
0.2 |
|
Au |
0.1 |
|
0.0 |
0.1 |
|
0.1 |
0.2 |
|
0.0 |
0.1 |
|
0.0 |
0.0 |
|
0.0 |
0.1 |
|
0.0 |
0.2 |
|
0.1 |
0.3 |
|
0.1 |
0.2 |
0.1 |
0.2 |
0.1 |
*** p<0.001, **p<0.01, *p<0.05.