Element

Content % in ash

Species

Ni

Zn

Cr

Co

Se

Sr

U

Cu

Hg

W

>10

-

1 - 3

-

-

-

-

0.1 - 1

-

-

Alyssumbertolini

Thlaspicalaminare, Equisetum arvense

Pimeleasuturi, Leptospermunscoparium

Crotalariacobaltica

Astragalusracimosus

Arabisstricta

Uncinialeptostachya, Coprosmaaborea

Becuimhomblei

Betuapapyrifera

Pinus sibiricus