Table 4 Rotated component matrix for data of sediments (PCA loadings >0.5 were shown in bold).

From: The spatial distribution, accumulation and potential source of seldom monitored trace elements in sediments of Three Gorges Reservoir, China

 

PC1

PC2

PC3

PC4

Li

0.322

0.660

0.391

0.190

Be

0.664

0.512

0.179

−0.197

B

−0.559

0.351

0.617

0.096

V

0.852

0.473

−0.138

−0.01

Co

0.103

0.938

−0.022

0.071

Ni

0.952

0.023

−0.028

0.016

Ga

0.860

0.540

−0.312

0.062

Sn

0.831

0.211

0.163

−0.09

Sb

−0.119

−0.022

−0.008

0.940

Tl

0.426

0.786

−0.069

0.013

Bi

0.749

−0.381

0.400

0.009

Cr

0.927

0.251

−0.112

−0.058

Mn

0.734

−0.248

−0.377

0.190

Cu

0.819

−0.288

0.287

−0.002

Zn

0.876

−0.339

0.054

−0.008

As

0.912

−0.179

0.092

0.083

Cd

0.817

−0.283

−0.222

0.016

Pb

0.667

−0.584

0.322

−0.035

TOC (%)

−0.352

−0.107

−0.129

−0.114

Clay (%)

0.771

−0.299

−0.297

0.202

Percentage of variance

55.517

70.747

76.748

82.253

Cumulative percent

55.517

15.230

6.001

5.505

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