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Table 7 Rotated factor loadings of PCA application for heavy metals

From: Quality modeling of drinking groundwater using GIS in rural communities, northwest of Iran

Parameters PC1 PC2 PC3
B 0.913 −0.052 −0.315
Sn 0.881 −0.037 −0.151
Hg 0.871 0.007 0.214
Br −0.319 0.877 −0.033
Cr −0.103 −0.859 0.047
Ba 0.521 −0.635 0.043
Zn −0.169 −0.571 0.023
Cu −0.278 0.504 0.411
As −0.099 0.406 −0.822
Al −0.274 0.495 0.613
Eigenvalue 3.790 2.165 1.283
Variance % 37.905 21.650 12.835
Cumulative % 37.905 59.555 72.390
  1. Numbers in bold indicate effective parameter in each PC.