Ryckman Lecture: "Secondary Organic Aerosol"

Apr 12
11:00 AM
12:00 PM
Brauer Hall, room 12

Annual Ryckman Lecture

The Department of Energy, Environmental and Chemical Engineering will host the 15th annual Ryckman Lecture featuring John H. Seinfeld.

John H. Seinfeld, the Louis E. Nohl Professor of Chemical Engineering at the California Institute of Technology, will present "Secondary Organic Aerosol." Seinfeld is one of the world’s leading authorities on atmospheric chemistry and airborne particles. He and his PhD students developed the first computational models of urban air pollution and worked out both the chemistry of ozone formation and the elaborate thermodynamic equilibria that govern atmospheric gas-particle distributions.

Abstract: Organic compounds comprise 50 percent or more of the mass of airborne particulate matter, worldwide. The principal route to formation of organic atmospheric particulate matter is the atmospheric oxidation of volatile organic compounds, generated by both anthropogenic and biogenic sources, to produce low-volatility compounds that condense into the aerosol phase. Oxidation products generated in this way are referred to as Secondary Organic Aerosol. Understanding the chemistry and physics of Secondary Organic Aerosol (SOA) is a dominant challenge in atmospheric chemistry. Laboratory studies of SOA formation are typically carried out in large chambers. We will review the current state of understanding of SOA formation and the challenges in studying SOA in laboratory chambers.

5 p.m. reception in Brauer Hall Lobby

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Organizer / Host: Pratim Biswas