CALIBRATING CONCERN ABOUT PAHS IN URBAN AIR USING MONITORING AND MODELING:
A PROJECT PLAN SUMMARY
Funding: U.S. EPA Community Air Toxics Ambient Monitoring Grant # XA00E00976
Passive Monitors: donated by Oregon State University, Simonich Environmental Chemistry Laboratory
• Size Matters
• Ambient Temperature Matters
• Branching Matters
• Substitution Matters
• Cancer Potency Matters
• Kristie Ellickson, Greg Pratt, Cassie McMahon,
Mike Bauer, and (potentially a new planner from
the air policy unit)
• Carl Herbrandson
• Paul Swedenborg, Mike Krause, Christina
Rainaldo, Wyatt Hedine
• Charlie Lippert
Project Team
Calibration of Passive Samplers
Sampling Rate (m3 day-1) =
CPAS = mass of specific PAH on passive sampler media (ng)CAIR = concentration of specific PAH in air (ng m-3)
But, we may have to adjust for calculate an effective air volume
0%
5%
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35%
40%
45%Urban Air cPAH fractions: Mass (%) (active sampler-preliminary data)
% cPAH mass
0%
5%
10%
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45%
Urban Air cPAH fractions: Mass and Potency (BaP-PEQ)
% cPAH mass
% cPAH BaP-PEQ
MDH Priority cPAHs (21)
Preliminary Data – MN PCA/MDH – Ellickson et al.
MDH Priority cPAHs (21)
EU marker cPAHs (4)
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