George Wandera Kisimbiri

About me

PhD researcher interested in climate and air quality. I am particularly interested in atmospheric chemistry of air pollutants from vehicular non-exhaust emissions, with a focus in brake wear-derived emissions. While the particulate emissions from automotive brake wear have been studied and well understood, their gaseous counterparts have been woefully understudied, and hence the understanding of their composition, atmospheric transformations, fate, and impacts is still far from complete. Here, I will be using experimental approaches to study brake wear-derived gaseous emissions, e.g., studies on how secondary organic aerosols (SOA) are formed from oxidation of gaseous precursors. Noteworthy, emissions from vehicular road traffic significantly impact our climate, air quality, and human health.  I will utilise state-of-the-art online mass spectrometry tools like the high-resolution time of flight chemical ionization mass spectrometer (HR-ToF-CIMS), a proton transfer reaction mass spectrometer (PTR-MS), and aerosol mass spectrometry (AMS). Other equipment includes a Tribometer, scanning mobility particle sizer (SMPS), potential aerosol mass (PAM) oxidation flow reactors, etc.