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Table 7 Loadings of the 4 PC’s considering as variables the total metals, S and ABA parameters

From: Characterization and assessment of potential environmental risk of tailings stored in seven impoundments in the Aries river basin, Western Romania

Parameter PC1 PC2 PC3 PC4
Al 0.868** −0.248 −0.082 0.108
Fe 0.551* 0.618* −0.048 0.096
Ca 0.000 0.904** 0.191 −0.015
K 0.797** −0.002 −0.218 0.152
Mg 0.862** −0.199 0.207 0.033
Na 0.869** −0.208 −0.119 −0.027
Mn 0.836** 0.009 0.329 0.182
Ba 0.662* −0.154 −0.196 0.518*
Zn −0.134 0.743* 0.176 0.495
Pb −0.273 0.872** 0.100 0.101
Cu 0.862** −0.239 −0.095 0.001
Ni 0.060 0.613* −0.047 0.640*
Cr 0.220 0.575* −0.127 0.659*
As −0.247 0.843** 0.273 0.095
Cd −0.124 0.612* 0.421 0.533*
Co 0.855** −0.169 0.126 0.093
Sr 0.820** 0.339 0.210 −0.043
Ti 0.856** −0.337 −0.088 0.005
V 0.739* −0.428 −0.092 0.044
W −0.220 0.858** 0.245 0.015
Ag −0.850** −0.163 −0.292 0.145
Au −0.811** 0.035 −0.218 0.161
NNP 0.122 0.002 0.915** −0.023
S −0.149 0.799** −0.432 0.087
NP 0.093 0.232 0.890** 0.000
APP −0.145 0.800** −0.432 0.089
Variability (%) 47 31 12 5
  1. **strong influence on the latent factor (>0.75); *moderate influence on the latent factor (0.50-0.75).