Fig. 6
From: X-ray fluorescence spectroscopy (XRF) for metallome analysis of herbarium specimens
Results of fitting against training datasets. a–g Scatterplots comparing the empirical calibration and the Dynamic Analysis approaches against ICP-AES results. h Box plots in showing results for all methods on the training datasets, together with ICP-AES results (purple). Letter-codes represent the results of a Kruskal–Wallis post hoc test identifying dissimilarity—matching letters indicate that those populations do not significantly differ. DA, ICP, EC in the legends refer to the Dynamic Analysis with the measured areal density, ICP-AES, and empirical calibrations, respectively