Heavy metal

Element

1

2

3

Pb

0.483

−0.772

−0.140

Cd

0.841

−0.160

0.005

As

0.637

0.609

−0.182

Zn

0.857

−0.317

−0.216

Ni

0.536

0.193

0.687

Cu

0.462

0.210

0.558

Hg

0.399

0.478

−0.657