Table 2 Mean absolute percentage error of mean concentrations of a subset 6 mm diameter circle around the apex (1), lamina (2), and base (3) and their combinations compared to the mean concentrations of the whole leaves
From: X-ray fluorescence spectroscopy (XRF) for metallome analysis of herbarium specimens
Combination | K (%) | Ca (%) | Mn (%) | Fe (%) | Co (%) | Ni (%) | Zn (%) | Se (%) | Average (%) |
|---|---|---|---|---|---|---|---|---|---|
1 | 22.8 | 13.1 | 8.3 | 5.7 | 7.3 | 10.2 | 5.3 | 3.5 | 9.5 |
2 | 9.3 | 6.1 | 3.7 | 2.3 | 3.1 | 3.9 | 2.8 | 2.9 | 4.3 |
3 | 24.7 | 13.7 | 12.4 | 7.0 | 2.9 | 4.1 | 5 | 2.8 | 9.1 |
1,2 | 11.1 | 5.6 | 3.2 | 2.8 | 2.3 | 3.4 | 2.8 | 2.8 | 4.2 |
1,3 | 8.1 | 4.8 | 2.2 | 2.7 | 2.3 | 4.3 | 2.2 | 3 | 3.7 |
2,3 | 14.2 | 8.5 | 7.0 | 3.6 | 2.8 | 3.2 | 3.1 | 2.3 | 5.6 |
1,2,3 | 5.2 | 3.1 | 2.1 | 1.2 | 0.7 | 1.7 | 1.9 | 2.7 | 2.3 |