BEGIN:VCALENDAR VERSION:2.0 PRODID:-//ZContent.net//ZapCalLib 1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VEVENT SUMMARY:Dropping Acid in the Atmosphere: Is It Just a Phase? LOCATION:Chemistry A101 TZID:America/Denver DTSTART:20194101T000000 UID:2026-04-22-02-16-44@natsci.colostate.edu DTSTAMP:20260422T021644 Description:About the Seminar\n\nAtmospheric aerosols are incredibly comple x chemical systems with thousands of species present in yoctoliter to atto liter volumes\, which makes measuring their chemical and physical properti es an analytical challenge. Despite these instrumental demands\, measuring aerosol properties is essential\, as air pollution leads to 10% of global deaths annually\, primarily due to the effects of atmospheric particles. These aerosols are also the most uncertain aspect of radiative balance lea ding to climate change. The Ault Laboratory is focused on understanding th e complex heterogeneous and multiphase chemistry occurring within aerosols through systematic physical chemistry studies\, the development of new an alytical methods and sensors\, and measurements of complex systems in that atmosphere. We conduct these studies this through a combination of spectr oscopy\, microscopy\, and mass spectrometry techniques. This seminar will focus on the acidity\, phase\, and morphology of mixed organic-inorganic a tmospheric particles. Specifically\, we will focus on the acid-catalyzed r ing opening reaction of isoprene epoxydiols (IEPOX)\, formation of organos ulfates and polyols\, and subsequent changes to diffusion in viscous mater ials. From this we can predict future properties and amounts of secondary organic aerosol (SOA). With our novel analytical methodologies and physica l chemistry studies\, the Ault Laboratory is providing fundamental molecul ar insights into the chemistry occurring within atmospheric aerosols that have significant consequences for human health and global climate.\n\n&nbs p\;\n\nAbout the Speaker\n\nAndrew Ault is an assistant professor in the D epartment of Environmental Health Sciences and Department of Chemistry at the University of Michigan.  He received his B.A. in Chemistry from Carle ton College in 2005\, working with Prof. Deborah Gross.  He earned his Ph .D. in Chemistry from University of California\, San Diego\, in 2010\, wor king with Prof. Kim Prather.  Dr. Ault has been at the University of Mich igan since 2013\, and has establisted an externally funded and highly prod uctive research laboratory.  He was recently awarded the 2018 Sloan Resea rch Fellowship in Chemistry\, being only the 2nd environmental chemist to earn this award in the past decade.\n\n \; 4:00 pm END:VEVENT END:VCALENDAR