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UID:0-6949@eng.ufl.edu
DTSTART;TZID=America/New_York:20241016T160500
DTEND;TZID=America/New_York:20241016T170000
DTSTAMP:20241014T140722Z
URL:https://www.eng.ufl.edu/news-events/events/ees-air-pollution-seminar-p
 fas-in-the-atmosphere-with-air-quality-models/
SUMMARY:EES Air Pollution Seminar: PFAS in the atmosphere with air quality 
 models
DESCRIPTION:Emma D'Ambro\, Ph.D.\, Chemist\, US EPA\nAbstract: Per- and pol
 yfluoroalkyl substances (PFAS) are a large class of human-made compounds t
 hat have contaminated the environment both near and far from sources. To d
 ate\, much of the scientific and regulatory focus has been on PFAS in drin
 king and surface waters\, with a paucity of studies on air emissions\, tra
 nsport\, and deposition\, which is likely to contribute in part to water c
 ontamination. Air quality modeling techniques can be used to quantify air 
 concentrations and deposition fluxes to help parse the role of exposure pa
 thways such as direct inhalation and ingestion via contaminated water. We 
 apply the Community Multiscale Air Quality model (CMAQ) version 5.3.2 to a
  case study in Eastern North Carolina to model the PFAS emissions and tran
 sport at fine scale (1 km) from the Chemours Inc. Fayetteville-Works. 26 P
 FAS with the largest emissions by mass are identified and added explicitly
  to CMAQ\, along with an aggregate "other PFAS" species to represent the b
 alance of the emissions. The Fayetteville-Works site is unique as it is th
 e only fluorochemical manufacturer to our knowledge to provide a detailed 
 accounting of quantified speciated emissions. We evaluate the CMAQ predict
 ions for deposition against existing measurements and investigate the pred
 icted air concentration and deposition throughout the domain\, up to ~150 
 km from the facility.\nBio: Emma is a Research Chemist in the Office of Re
 search and Development at the US EPA. She earned her PhD in Atmospheric An
 alytical Chemistry from the University of Washington in Seattle and joined
  the EPA in 2019. Her work focuses on adding per- and polyfluoroalkyl subs
 tances (PFAS)\, a suite of anthropogenically produced compounds\, to CMAQ 
 to investigate their atmospheric fate.
CATEGORIES:Seminars
LOCATION:https://ufl.zoom.us/j/94401364787?pwd=MPcKN7NYoba5Dt2UacV4dzhXyEHK
 OB.1
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