Title: Experimental Investigation of Motor Vehicle Particulate Matter Emissions: Resuspended Dust from Public Paved Roads
1St.Louis SupersiteProject Update
Meg N.S. Yu Professor Jay R. Turner Environmenta
l Engineering Program Washington University in
St. Louis Sustainable Air Quality Monday
Presentation April 9, 2001
2Fine Particulate Matter Monitoring Strategy
Supersites Program
PM2.5 Speciation Network
PM2.5 Compliance Network (mass concentration)
3USEPA Fine Particulate Matter Supersites Program
4(No Transcript)
5Supersite Monitoring Locations
6Supersite Locations and Mass/Speciation Sites
7East St. Louis Core Site
8N. St. Louis City (Margaretta) Site
- Urban Residential
- St. Louis Supersite Satellite Location Will
monitor 4 wks of each quarter year - Location of previous March-Midwest Study
9St. Louis - Midwest Supersite Collaborators
- Georgia Institute of Technology
- U.S. EPA Region VII
- Missouri Department of Natural Resources
- Illinois Environmental Protection Agency
- St. Louis City Air Pollution Control Program
- St. Louis County Department of Health
- Siting Cooperation
- Illinois Department of Transportation
- City of St. Louis
- Mineral Area College
10St. Louis Supersite Project Objectives
- USEPA identified three overarching objectives
which each Supersite must address. The following
summarizes the St. Louis Supersite
approach to these objectives - (1) improved understanding of source-receptor
relationships to support control strategy
development - St. Louis is an urban island, broadly
representative of the urban Midwest - (2) support health effects and exposure studies
- integration with three large health effects
programs (nine separate studies) - (3) evaluation of emerging sampling methods
- battery of advanced measurements for aerosol
physical properties and chemical composition - emphasis on methods with demonstrated or
potential ability to operate reliably for
extended periods with limited attendance
11Aerosol Physical Properties (examples)
- Near-Real Time Automated Measurements
- aerosol size distributions (5-min) core
- aerosol integral moments (1-sec) core and
satellite - Number
- Scattering
- Electrical Charge
OPC optical particle counter SMPS scanning
mobility particle spectrometer
other aerosol properties (e.g., surface area)
Assume PSD shape (e.g., lognormal)
12Aerosol Chemical Properties (examples)
- Semi-continuous Automated Measurements (hourly or
better)
Circles denote measured species also PM2.5 mass,
and 15 elements retrospectively
13Example - Continuous Bulk Nitrate Aerosol Data
from PILS-IC
Atlanta Supersite - August 1999
14Aerosol Physical/Chemical Properties (examples)
- Time-Integrated Substrate Methods24-hour
- PM1, PM2.5, PM10 mass
- PM2.5 speciation (ions, elements, EC/OC)
- PM2.5 organics speciation
- Coarse PM elements, EC/OC
- Toxicological sampler (trichot)
- Also
- Precursor gases (e.g., NH3, H2SO4, HNO3) 24-hour
- Volatile Organic Compounds 24-hour
- Criteria gases5-min (IEPA)
- Meteorology (WS, WD, RH, T, P, Solar Rad, Precip)
15Integration with Exposure Health Effects Studies
16Integration with Exposure Health Effects
Studies
- measurement of personal and indoor exposures
- H. Suh P. Koutrakis (EPRI Exposure Studies)
- cardiac vulnerability in potentially susceptible
subjects - F. Speizer (NIEHS Program Project)
- implantable defribrillators detected arrhythmias
- D. Dockery (NIEHS Program Project)
- conditions in elderly which predispose towards
acute adverse effect of particulate exposure - J. Schwartz (EPA PM Center)
- chronic effects of particulate exposure
- D. Dockery (EPA PM Center)
- in vitro toxicity of St. Louis particulate matter
- L. Kobzik P. Koutrakis (EPA PM Center)
17Core Site Status as of March 18, 2001
Equipment installation starts next week 3-4 week
shakedown period
18Air Quality Laboratory
INTERNET SITES St. Louis - Midwest
Supersite http//capita.wustl.edu/StLSuperSite/ Wa
shington University Air Quality Laboratory follow
link at http//www.seas.wustl.edu/user/jrturner/
For More Information Jay R. Turner Department
of Chemical Engineering Campus Box
1198 Washington University tel
314-935-5480 One Brookings Drive fax
314-935-5464 St. Louis, MO 63130 email
JRTURNER_at_SEAS.WUSTL.EDU