Abstract

At the KN3000 Van de Graaff accelerator in Florence, PIXE analysis of aerosol samples is routinely performed to measure the concentration of elements with Z>10. In order to allow a complete reconstruction of the aerosol mass, recently we implemented the light element detection by means of in-vacuum Particle Elastic Scattering Analysis (PESA) with 3 MeV protons on particulate matter collected on Teflon filters. PESA with a surface barrier detector (SBD) at a forward angle of 30° was used to estimate the H content; another SBD was placed at 150° backward-angle to determine C, N and O concentrations. Results concerning PM 10, PM 2.5 and PM 1 aerosol fractions, collected on a daily basis over some weeks in a small industrial town near Florence, will be shown.

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