In this work we investigated rapid changes in chemical composition of fine particulate matter during the celebrations of New Year 2013. The measurements were carried out at the urban background site Prague-Suchdol.
The compact time-of-flight aerosol mass spectrometer (c-ToF-AMS,Aerodyne) was used to analyze highly time - resolved samples of non-refractory aerosol components. We focused on four episodes with significantly elevated total aerosol mass concentration.