Bioaerosol monitoring in the study of the impact of air pollution on building stones in the Pò Valley urban site (Italy)

The impact of air pollution on stones buildings located in urban areas is widely demonstrated, but gaps remain in the measurement of deposition flows on architectural surfaces. Moreover, thanks to the mitigation policies and use of low-sulphur fuels (Bonazza, 2017), possible effects on built heritage of the current urban atmosphere, richer than in the past of NOx and organic compounds (emitted from vehicular traffic), should be considered. The study was conducted in Bologna, an urban city located in the Pò Valley, the most polluted area in Europe with serious consequences not only for human health.