Sample

n

As

(µg/l)

Cd

(µg/l)

Cr

(µg/l)

Cu

(µg/l)

Fe

(mg/l)

Mn

(mg/l)

Ni

(µg/l)

Pb

(µg/l)

Zn

(µg/l)

Sw1

13

1.57

0.01

0.8

2.25

0.23

0.39

1.28

0.50

10.1

Pw2

36

24.1

0.02

1.55

3.72

22.3

6.38

1.9

0.73

52.3

Sw * (100/Pw) (%)

6.5

50.0

51.6

60.5

1.0

6.1

67.4

68.5

19.3