Grid name

pH

V

Cr

Mn

Co

Ni

Cu

Zn

As

Se

Cd

Hg

Pb

005

5.27

227

199

32,229

1866

ND

95

22

ND

ND

ND

ND

165

509

6.07

98

76

257

ND

ND

27

55

17

ND

ND

ND

14

306

6.33

370

77

6580

ND

67

37

68

23

ND

ND

ND

36

004

5.98

102

81

682

ND

30

42

104

17

ND

ND

ND

21

511

5.18

81

64

383

ND

ND

28

52

ND

ND

ND

ND

26

003

5.82

77

72

430

ND

51

29

68

11

ND

ND

ND

18

105

6.32

91

108

601

198

ND

39

77

ND

ND

ND

ND

25

412

4.72

73

72

459

110

ND

18

38

9

ND

ND

ND

13

304

6.26

97

69

528

ND

ND

31

78

ND

ND

ND

ND

31

Standard limit (≤)

/

/

150

/

/

40

50

200

40

/

0.30

0.30

250