Variable

PC1 (30.5%)

PC2 (17.7%)

PC3 (14.3%)

PC4 (11.6%)

K

0.597

0.125

−0.009

0.493

Cr

0.719

−0.095

−0.072

−0.603

Ni

0.202

−0.316

0.736

0.467

Cu

0.443

0.465

−0.397

0.325

Zn

0.120

0.433

0.605

−0.366

As

0.720

−0.371

−0.193

−0.157

Cd

0.347

0.602

0.277

−0.199

Pb

0.824

−0.007

−0.299

0.094

S

0.743

−0.416

0.379

0.022

Cl

0.231

0.754

0.088

0.143