Mean (mg/g)

S.D.

C.V

Pb

2.58

1.27

49.40

Cr

3.85

1.46

38.02

Cd

2.13

0.62

28.94

Cu

4.08

0.85

20.72

As

3.88

0.70

18.14

Mn

4.29

0.92

21.52

Ni

5.33

1.24

23.24