Phys.org March 6, 2024 Criegee intermediates are reactive intermediates that are implicated in transforming the composition of Earth’s troposphere and in the formation of secondary organic aerosol, impacting Earth’s radiation balance, air quality and human health. Direct identification of their signatures in the field are not available. An international team of researchers (USA – Argonne National Laboratory, NASA Jet Propulsion Laboratory, Sandia National Laboratory, Caltech, Princeton University, Princeton Plasma Physics Laboratory, UC Davis, UK, Turkey, Brazil, France) has identified sequences of masses consistent with the expected signatures of oligomerization of the CH2OO Criegee intermediate, a process implicated in ozonolysis-driven aerosol […]
Tag Archives: Atmospheric aerosol
Scientists discover three liquid phases in aerosol particles
Phys.org April 12, 2021 Aerosol particles fill the atmosphere and play a critical role in air quality. These particles contribute to poor air quality and absorb and reflect solar radiation, affecting the climate system. An international team of researchers (Canada, USA – UC Irvine, Pacific Northwest National Laboratory, Harvard University, Georgia Institute of Technology, Germany) used optical and fluorescence microscopy, to present images that showed the coexistence of two noncrystalline phases for real-world samples as well as for laboratory-generated samples under simulated atmospheric conditions. The results revealed that atmospheric particles can undergo liquid–liquid phase separations. The study focused on particles […]