Table 2 Principal component analysis of mineral elements in D. officinale
From: Element-tracing of mineral matters in Dendrobium officinale using ICP-MS and multivariate analysis
Item | Principal component analysis | ||
|---|---|---|---|
1 | 2 | 3 | |
Zscore (Ti) | 0.630 | 0.200 | 0.702 |
Zscore (V) | 0.624 | 0.464 | 0.378 |
Zscore (Cr) | −0.506 | 0.380 | 0.740 |
Zscore (Mn) | 0.404 | −0.751 | 0.380 |
Zscore (Fe) | 0.699 | 0.546 | −0.245 |
Zscore (Ni) | 0.980 | −0.090 | −0.088 |
Zscore (Zn) | 0.982 | −0.031 | −0.054 |
Zscore (Ba) | 0.549 | −0.779 | 0.031 |
Zscore (REE) | 0.494 | 0.495 | −0.330 |
λ | 4.165 | 2.122 | 1.507 |
Proportion (%) | 46.281 | 23.582 | 16.741 |
Cumulative proportion (%) | 46.281 | 69.863 | 86.604 |