Table 2.
Loading values for different PTEs under each principal component.
| PTEs | Principal components |
|||
|---|---|---|---|---|
| PC1 | PC2 | PC3 | PC4 | |
| Zn | 0.227 | -0.164 | 0.650∗∗ | -0.398 |
| Mn | -0.305 | 0.681∗∗ | -0.319 | 0.184 |
| Cu | 0.381 | 0.098 | 0.186 | -0.655∗∗ |
| Pb | 0.223 | -0.100 | 0.562 | 0.606∗∗ |
| Ni | 0.656∗∗ | -0.048 | 0.221 | 0.391 |
| Co | 0.916∗ | 0.030 | 0.020 | -0.160 |
| Cd | 0.907∗ | 0.177 | 0.108 | -0.004 |
| As | 0.572∗∗ | 0.370 | -0.434 | -0.059 |
| Eigenvalue | 3.22 | 1.54 | 1.33 | 1.19 |
| Variance | 32.22 | 15.46 | 13.31 | 11.99 |
| Cumulative variance | 33.22 | 47.6 | 61 | 72.9 |
Extraction method: principal component analysis.
Rotation method: Varimax with Kaiser normalization.
∗ and ∗∗ represents Strong and moderate loadings, respectively and shown in bold letters.