Abstract

Since 1970, the General Physics Department of «Universita degli Studi di Torino» has carried out a project research, on inorganic solid particulate matter. The special issue of Annals of Geophysics, published for Professor Giorgio Fiocco?s 70th birthday, gives us the possibility to make some important remarks on this topic, focusing on PM2.5. This has been possible using all the old and new experimental data of the measures made by the authors of this paper since 1970.

Highlights

  • Since 1970, the General Physics Department of «Università degli Studi di Torino» has carried out a research project on inorganic solid Particulate Matter (PM) (Longhetto et al, 1975; Bacci et al, 1983)

  • The special issue of Annals of Geophysics, published for Professor Giorgio Fiocco’s 70th birthday, gives us the possibility to make some important remarks on this topic

  • Using the data of our measures, we can affirm that PM2.5 concentrations are greatly increasing

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Summary

Introduction

Since 1970, the General Physics Department of «Università degli Studi di Torino» has carried out a research project on inorganic solid Particulate Matter (PM) (Longhetto et al, 1975; Bacci et al, 1983). The special issue of Annals of Geophysics, published for Professor Giorgio Fiocco’s 70th birthday, gives us the possibility to make some important remarks on this topic. This has been possible collecting the experimental data of measures (old and new ones) made by the authors of this over during more than 30 years. The particles, dispersed in the atmosphere, with an aerodynamic diameter of less than 2.5 mm (PM2.5) have been studied with great accuracy

Dimensional spectra and associated chemical elements
Correlation with meteorological factors
Indoor measures
Conclusions

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