Elements concentration (μg/g)

Ca

Cu

Fe

Pb

Zn

Cr

Cd

Mg

Ni

Average

1024

6.2

13

10

15

<0.1

<0.1

191.7

<0.04

Maximum

2348

30

36

13

37

<0.1

<0.1

204.3

<0.04

Minimum

339

1.4

1.1

4.1

5.7

<0.1

<0.1

167.8

<0.04