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Table 6 Concentrations in the foil 1-1, thickness 450 µm, determined by: (a) µXRF, (b) ICP-MS

From: Analysis of trace metal distribution in plants with lab-based microscopic X-ray fluorescence imaging

Foil
1-1
K [mg kg−1] Ca [mg kg−1] Mn [mg kg−1] Fe [mg kg−1] Ni [mg kg−1] Cu [mg kg−1] Zn [mg kg−1]
µXRF 1119 1444 182 265 1161 276 52,763
ICP-MS 1091 1378 167 241 1158 244 52,207
RSE  % 1.27 2.34 4.30 4.74 0.13 6.15 0.53
  1. The relative standard error percentage (SE/mean %, with n = 2 and SE = STDEV/sqrt(n)) shows the difference between the µXRF result and the ICP-MS