Table 3.
Eigenvalues, explained (Variability %) and cumulative variance (Cumulative %), and eigenvectors for the first three factors (F) obtained with principal component analysis performed on the data set consisting of the first three coordinates (PC_FTIR) obtained from the FT-IR spectra and the first three coordinates (PC_UVVis) obtained from the UV-Vis spectra in HCl solutions.
| F1 | F2 | F3 | |
|---|---|---|---|
| Eigenvalue | 257.119 | 67.382 | 16.325 |
| Variability (%) | 75.436 | 19.769 | 4.790 |
| Cumulative % | 75.436 | 95.205 | 99.994 |
| Eigenvectors | |||
| PC_FTIR1 | 0.005 | −0.009 | −0.024 |
| PC_FTIR2 | 0.000 | 0.000 | 0.000 |
| PC_FTIR3 | 0.001 | −0.001 | −0.003 |
| PC_UVVis1 | 1.000 | 0.000 | 0.000 |
| PC_UVVis2 | 0.000 | 1.000 | 0.000 |
| PC_UVVis3 | 0.000 | 0.000 | 1.000 |