Meteor entry is characterized by complex shock layer physics such as radiation, evaporation of the meteoroid surface and the resulting chemistry process with the air constituents. Moreover, several meteor observations include spectral measurements from which their composition can be inferred. Recently a ground facility experiment of an H5 chondrite was performed at the VKI plasmatron facility which includes the measurement of time resolved optical emission spectroscopy data of ablated species. In this work we present a model able to reproduce the ablation of meteors and the comparison of the numerical radiative field with the one observed in the experiments. It is observed that the numerical results agree generally well with the experimental data when nitridation and oxidation gas-surface reactions are included due to the presence of a cork sample holder.