Study: Gases from burning biomass react within clouds, forming secondary organic aerosols

Phys.org  July 24, 2024 A team of researchers in the US (Pacific Northwest National Laboratory, UC Davis) developed a stand-alone box model to investigate four phenolic compounds, i.e., phenol, guaiacol, syringol, and guaiacyl acetone (GA), which represent some of the key potential sources of aqSOA from biomass burning in clouds. They predicted that the aqSOA formation potential (defined as aqSOA formed per unit dissolved organic gas concentration) of these phenols was higher than that of isoprene-epoxydiol (IEPOX), a well-known aqSOA precursor. Their simulations suggested that highly soluble and reactive multifunctional phenols like GA would predominantly undergo cloud chemistry within cloud […]

Dirty carbon reveals a sophisticated side

MIT News  April 27, 2020 Polycyclic heavy hydrocarbons (HHs) such as coal, tar, and pitch are a family of materials with extremely rich and complex chemistry, representing a massive opportunity for their use in a range of potential applications. An international team of researchers (USA – MIT, industry, Canada, China) shows that optimal selection of initial HHs based on molecular constituents is essential in tuning the material for a particular and targeted electronic application. Combining the selection of feedstock chemistry (H:C and aromatic content) and controlling variable laser treatment parameters (laser power, speed, and focus) lead to full control over […]