Depths (cm)

Column(B)

Heavy Metals (mg∙kg−1)

Removal%

Heavy Metals

Pb

Zn

Cr

Pb

Zn

Cr

Statistical Analysis

Pb

Zn

Cr

20

45

23.45

6.70

16.13

14.68

11.54

Med

46

26.055

9.50

40

50

13.11

3.15

17.92

8.20

5.42

Mean

46.5

26.62

9.67

60

36

23.62

16.78

12.90

14.78

28.93

SD

6.5

8.62

4.68

80

56

37.51

12.38

20.07

23.48

21.34

Max

56

37.51

16.78

100

45

28.49

9.02

16.13

17.83

15.55

Min

36

13.11

3.15

120

47

33.54

9.97

16.84

21

17.19