“…Depending on the diverse composition of these particles, they can show different reactivity and balance between their degradation and production processes. Sometimes, these particles show seasonal time dependence so that a limitation of the present study is in not considering time series components in the modeling, which is an open problem to be conducted in a future research (see Decanini & Volta, ; Kessler et al, ; Querol et al, ; Vione et al, ). Regarding this aspect, we must mention that PM2.5 and PM10 levels are considered like simple dilutions and concentrations of air masses, without taking into account the mentioned factors of composition, chemical reactivity, production–degradation equilibrium, and evolution over time of these quantities.…”