Metals (mg/kg)

F1

F2

F3

F4

F5

F6

Pb

0.908

−0.391

−0.107

−0.056

−0.024

0.087

Cd

0.912

−0.221

−0.189

0.284

0.048

−0.026

Cr

0.842

0.260

0.459

0.117

−0.017

0.012

Zn

0.559

0.791

−0.237

0.017

−0.073

−0.001

Cu

0.874

−0.455

0.028

−0.140

−0.068

−0.064

Ni

0.918

0.320

−0.009

−0.210

0.101

−0.009

Eigenvalue

4.284

1.204

0.314

0.161

0.023

0.013

Variability (%)

71.4

20.1

5.24

2.69

0.39

0.21

Cumulative %

71.4

91.5

96.7

99.4

99.8

100