Sample
level
As
Cr
Cu
Mn
Ni
Cd
Pb
Zn
St-1
3.68
1.48
5.02
0.37
1.06
2.04
1.04
1.01
14.77
Moderate
St-2
3.72
0.98
4.97
0.32
0.38
1.975
1.04
0.90
13.13
Moderate
St-3
3.76
0.56
5.17
0.23
0.26
2.04
1.05
0.89
12.98
Moderate
St-4
3.77
0.74
5.33
0.26
0.37
2.02
1.05
0.95
13.48
Moderate
St-5
4.06
0.62
5.52
0.32
1.03
2.14
1.13
1.23
15.05
Moderate
St-6
3.64
0.65
4.98
0.64
0.37
1.85
1.01
1.008
14.20
Moderate
St-7
4.19
0.55
6.15
1.62
1.40
2.17
1.17
2.09
18.50
Relatively high
St-8
3.84
0.68
5.06
0.24
1.06
2.07
1.07
0.88
13.81
Moderate
St-9
3.73
0.68
4.80
0.21
0.37
2.02
1.04
0.84
12.48
Moderate
Average
3.82
0.77
5.22
0.47
0.70
2.04
1.07
1.09
14.27
Moderate
Contamination degree
Heavy
Non-conta
Heavy
Non-conta
Non-conta
Moderate
Light
Light
Moderate