Caption: 
Experimentally measured (footnote 19) absolute concentration values using ICP dissolution profile of the CIPs at $\Phi=0.67$ using experimental setup 4 (Sec 2.4).

Notes: 
Footnote 19: Thanks to Pascal Theis for collecting the data.

Plot data:
plot_0: $\lambda=259.94\,$nm
plot_1: $\lambda=238.20\,$nm
plot_2: $\lambda=239.56\,$nm

