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UID:0-6793@eng.ufl.edu
DTSTART;TZID=America/New_York:20240911T160000
DTEND;TZID=America/New_York:20240911T170000
DTSTAMP:20240905T190543Z
URL:https://www.eng.ufl.edu/news-events/events/ees-air-pollution-seminar-n
 ovel-mass-spectral-tools-for-organic-gases-and-particles-in-indoor-and-out
 door-air/
SUMMARY:EES Air Pollution Seminar: Novel Mass Spectral Tools for Organic Ga
 ses and Particles in Indoor and Outdoor Air
DESCRIPTION:Dr. Sohyeon Jeon\, Postdoctoral Researcher\, Georgia Institute 
 of Technology\nAbstract: Particulate matter (PM) plays a critical role in 
 visibility\, hydrological cycles\, climate change\, and human health. Orga
 nic aerosols (OA)\, which make up 20-50% of PM\, have a complex chemical c
 omposition influenced by their sources and atmospheric processes. Semi-vol
 atile organic compounds (SVOCs)\, a major component of OA\, exist in both 
 gas and particle phases\, with their distribution influenced by environmen
 tal conditions\, adding to the complexity of OA. To enhance analysis of th
 ese complex chemical compounds of OA\, various mass spectrometry have been
  developed from bulk to molecular levels. Techniques such as Aerosol Mass 
 Spectrometry (AMS)\, Thermal Desorption Aerosol Gas Chromatography Mass Sp
 ectrometry (TAG)\, and multi-turn Time-Of-Flight mass spectrometry (InfiTO
 F) have been developed to investigate characteristics of OA in various env
 ironments. These advancements have highlighted the need for more efficient
  tools for data acquisition and data processing. In this talk\, I will int
 roduce several database and data processing tools developed to meet these 
 needs. First\, a mass spectral database and comparison tool for AMS and th
 e Aerosol Chemical Speciation Monitor (ACSM) enables users to visually and
  efficiently compare their data with existing studies. Second\, the 'AutoP
 MF' tool automates the quantification of chemical compounds in large GC-MS
  datasets from TAG using positive matrix factorization\, reducing data-pro
 cessing time and manual inspection. Additionally\, a guide tool for optimi
 zing resolution in InfiTOF mass spectrometer operations will be introduced
 . Finally\, I will present findings on the impact of particle type on the 
 phase partitioning of SVOCs in indoor environments through laboratory expe
 riments using one of these tools.\nBio: Sohyeon Jeon is a postdoctoral res
 earcher at the School of Chemical and Biomolecular Engineering at Georgia 
 Institute of Technology. She earned her Ph.D in Energy\, Environmental\, a
 nd Chemical Engineering at Washington University in St. Louis\, where her 
 research focused on the development of novel mass spectral data acquisitio
 n and data analysis tools for characterizing organic compounds in aerosols
 . Currently\, she is involved in Atmospheric Science and Chemistry mEasure
 ment NeTwork (ASCENT) where she works on operations and data analysis. Her
  work contributes to synthesizing and conducting integrated analysis of mu
 ltidimensional mass spectrometry datasets and complementary measurements t
 o investigate the diverse sources\, processing\, and properties of ambient
  aerosols across all the sites in the network.
CATEGORIES:Seminars
LOCATION:https://ufl.zoom.us/j/94401364787?pwd=MPcKN7NYoba5Dt2UacV4dzhXyEHK
 OB.1
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