Grid name

pH

V

Cr

Mn

Co

Ni

Cu

Zn

As

Se

Cd

Hg

Pb

609

7.02

285

492

31,354

2676

ND

81

27

ND

ND

ND

ND

86

410

7.44

161

224

6435

1977

ND

93

95

ND

ND

ND

ND

ND

703

7.41

78

152

579

ND

37

84

286

ND

ND

ND

ND

86

310

6.86

84

64

133

ND

41

18

33

11

ND

ND

ND

20

402

7.20

110

89

580

ND

ND

33

85

ND

ND

ND

ND

17

702

7.46

114

77

554

ND

50

45

85

ND

ND

ND

ND

21

711

7.32

100

88

682

ND

ND

50

76

12

ND

ND

ND

25

312

6.95

101

59

520

ND

31

40

74

ND

ND

ND

ND

22

203

7.20

75

46

519

ND

ND

ND

72

ND

ND

ND

ND

55

710

7.29

100

72

551

ND

39

44

93

ND

ND

ND

ND

24

206

7.12

117

82

574

ND

31

39

94

ND

ND

ND

ND

30

208

7.26

102

75

452

ND

ND

29

78

10

ND

ND

ND

26

313

7.15

89

50

400

ND

ND

30

55

16

ND

ND

ND

22

207

7.22

93

89

536

ND

ND

28

99

15

ND

ND

ND

21

Standard limit (≤)

/

/

200

/

/

50

100

250

30

/

0.30

0.50

300