Table 4.
Principal component loadings from PCA after Varimax rotation of the concentration of soil potentially toxic elements (0–0.2 m) in the municipality of Barcarena, Brazilian Amazon.
| Element | Rotated component matrix | |
|---|---|---|
| PC1 | PC2 | |
| As | 0.778a | 0.14 |
| Ba | 0.804 | 0.389 |
| Co | 0.764 | −0.002 |
| Cr | 0.807 | 0.151 |
| Cu | −0.09 | 0.958 |
| Hg | −0.001 | 0.719 |
| Ni | 0.671 | 0.408 |
| Pb | 0.498 | 0.756 |
| Zn | 0.574 | 0.746 |
| Eigenvalue | 3.592 | 2.735 |
| % Variance explained | 39.908 | 30.387 |
| Cumulative % variance | 39.908 | 70.295 |
a
Loading stronger than 0.6 are in bold font.