In the case of Smith and coworkers' approach, we have the bands defined according to the results of simulations and experiments regarding several PAH molecules. For Gavilan et al., 2022, the molecule that has been considered is that of pyrene. When pyrene-generated nanograins Raman spectrum is investigated, the bands mentioned by , are those generally used for biochar, as discussed in SSRN. It is strictly necessary to note that the COSmIC chamber produced a remarkable "simulation" of char.