Concentration before planting (mg/kg)

Tails

Soil

Cu

Zn

Fe

Cu

Zn

Fe

41.92

2.46

16.40

14.38

0.30

24.14

43.66

3.08

17.64

19.84

0.96

26.56

35.24

1.88

17.06

14.48

1.76

24.78

42.52

4.96

16.10

19.38

1.02

24.32

40.48

5.56

51.30

18.76

1.76

30.56

40.76 ± 3.29

3.58 ± 1.60

23.70 ± 15.44

17.37 ± 2.71

1.16 ± 0.62

26.07 ± 2.69