Here, the MCR analysis was conducted imagining the system as a combination of two components. They are (1) bulk component and (2) solute-correlated component. Therefore, in the current study, for a certain NP sample, all the spectral features in the NP sample spectra that are different than the spectrum of the bulk phase chosen for the MCR analysis, would appear in the solute-correlated spectrum. The dispersing media (collected supernatant liquids) were considered to be the pure bulk components for each NP sample.