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Table 4 Measures of closeness of agreement, LODs and LOQs obtained with the proposed method

From: Unveiling Harriet Backer: ICP–OES study for the characterisation of the colour tubes from her original paint box

Element Spectral line (nm) View mode Closeness of agreement (%) LOD (μg/L) LOQ (μg/L)
Al 396.152 Axial 4.6 0.4 1.4
Ba 455.403 Axial 4.5 0.03 0.10
Cd 228.802 Axial 2.6 0.1 0.5
Co 228.616 Axial 2.9 0.2 0.8
Cr 283.563 Axial 4.0 0.2 0.8
Cu 324.754 Axial 4.0 0.3 1.0
Fe 259.940 Axial 1.1 0.2 0.7
K 766.490 Axial 1.6 0.4 1.4
Mg 279.553 Radial 2.7 0.09 0.31
Mn 257.610 Axial 3.2 0.07 0.23
Na 589.592 Radial 4.4 13 45
P 177.495 Axial 0.2 0.7 2.2
Pb 220.353 Axial 2.9 1.1 3.6
S 182.034 Axial 2.6 1.8 6.0
Si 251.611 Axial 1.8 0.8 2.8
Sr 407.771 Axial 3.3 0.03 0.11
Zn 213.856 Axial 6.0 0.2 0.6
  1. The closeness of agreement was computed as the mean percentage deviation from the expected value for the mean of 11 independently prepared reference solutions. For the LOD and LOQ, nblanks = 10. For the calculations of the closeness of agreement, LOD and LOQ, deviant values were discarded according to the ISO-recommended Grubbs’ test with P = 0.05 [44]
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