Figure 4.
Scaled LA-ICP-MS elemental maps (arbitrary unit) for Al, P, Fe and Y of a root cross section of wild Saxifraga paniculata; Maps (a–d) show the complete images, while maps (e–h) only show a region of interest inside the root; Contrast: 0.3% of saturated pixels; Maximum pixel values are indicated in brackets; Scale bar: 100 µm; Map-size: 463 × 53 0 µm; Spot-size: 10 µm; Frequency: 10 Hz; Scan-speed: 10 μm/s; Laser power density: 3.74 GW/cm2; Fluence: 18.72 J/cm2.