PCA1

PCA2

PCA3

Fe

0.990

0.027

0.023

K

0.983

0.104

−0.027

Mn

0.980

−0.018

0.158

Ca

0.971

0.180

−0.019

Sc

0.957

0.273

0.015

Sr

0.950

0.260

−0.043

Ti

0.937

0.106

0.235

Co

0.856

0.425

−0.042

Ni

0.812

0.446

0.083

Cu

0.763

0.162

0.015

Zn

0.463

−0.336

0.410

Na

0.232

0.921

0.166

Al

0.155

0.854

0.035

Mg

0.497

0.846

0.083

Ba

0.021

0.447

−0.202

Pb

0.03

−0.317

0.914

As

0.078

0.082

0.858

Se

−0.397

0.04

0.707

V

0.351

0.217

0.639

贡献率/%

49.179

17.717

14.816

累积贡献率/%

49.179

66.896

81.712