Metals

Current study

China^a

India^b

USA^c

Japan^d

Pakistan^e

Taejon, Korea^f

Birmingham, UK^g

As

3.06

-

-

-

-

-

-

-

Cd

6.28

-

6.7

0.77

0.45

2

3.24

0.5

Ni

3.77

51

97

25.28

-

9

37.9

2

Cu

11.98

-

-

14.60

18.0

-

-

-

Pb

305.55

46

380

15.04

5.75

210

243

27

Cr

9.2

-

104

70.17

-

42

25.1

-

Fe

2057.0

5100

5220

512.4

869.3

930

1633

204

Mn

42.2

1210

-

1.89

34.7

57.0

50.3

6

Zn

303.3

274

-

2.99

1386.2

542

240

30

Sb

5.75

-

-

-

-

-

-

-

Se

2.43

-

-

-

-

-

-

-