A150-0018
PM2.5 Chemical Composition: Off-line AMS Analysis of Filter Samples from the SPARTAN Network
Monday, 14 December 2020
Poster
Claire E Robinson1,2, Hongmin Yu3,4, Randall Martin5, Christopher Ray Oxford6, Emmie Le Roy7, Brenna Walsh8,9, Crystal Lynn May Weagle8,9, Rachel E O'Brien10 and The SPARTAN Team, (1)College of William and Mary, Williamsburg, VA, United States, (2)NASA Langley Research Center, Hampton, VA, United States, (3)College of William and Mary, Williamsburg, United States, (4)California Institute of Technology, Pasadena, United States, (5)Washington University in St. Louis, Energy, Environmental & Chemical Engineering, St. Louis, MO, United States, (6)Washington University in St Louis, St. Louis, MO, United States, (7)Washington University in St Louis, St. Louis, United States, (8)Dalhousie University, Department of Physics and Atmospheric Science, Halifax, Canada, (9)Washington University in St Louis, Energy, Environmental & Chemical Engineering, St. Louis, United States, (10)College of William and Mary, Chemistry, Williamsburg, VA, United States
Abstract:
Fine particulate matter (PM
2.5)
contributes negatively to global air quality and is detrimental to public health. Determining the quantity and composition of particulate matter is essential for determining ways to limit emissions and locate point sources. Specifically, the composition of PM
2.5 is essential for giving insight into the source and the age of the organic material present in the particles. The Surface PARTicular mAtter Network (SPARTAN) is a ground-based measurement network collecting PM
2.5 mass, chemical composition, and optical characteristics to evaluate and improve remote sensing. This collaboration between ground-based monitors and satellite remote sensing will further enhance the understanding of air quality in different regions of the world.
Here, we present off-line high-resolution time-of-flight Aerosol Mass Spectrometer (HR-ToF-AMS) data analyzing the composition of collected PM2.5 at different ground-based sites in the SPARTAN Network. Filter samples were collected at multiple sites, extracted, and then nebulized into the HR-ToF-AMS. Elemental ratios and tracer compounds give insight into the particulates measured in the samples, allowing comparisons to be drawn between sources measured at different sites. In future developments, ground based data can be supplemented with aircraft flight campaign data in areas close to the ground site, giving a full characterization of the atmospheric vertical profile and the possibility of a richer data set to evaluate satellite remote sensing.
