An INTERNATIONAL State of the Science Workshop

Organic Speciation in Atmospheric Aerosols Research

April 5-7, 2004

Las Vegas, Nevada USA

Desert Research Institute at the University of Nevada

Bringing together air pollution researchers in complementary disciplines to evaluate the state of the science and identify information gaps in the characterization of organic aerosols.

Hosted by:
Desert Research Institute
(host and facilitator)
Community Services, Fort Lewis College (coordination & administration)

With funding from:
·          Western Regional Air Partnership/Western Governors' Association
·          National Science Foundation
·          EPA Office of Air Quality Planning & Standards (pending)
·          EPA Office of Research and Development, National Exposure Research Laboratory (pending funding, in-kind aid)
·          Department of Energy (pending)

Mon. April 5

11 a.m.

Organic Speciation Working Group meeting until 2:30 p.m. Open attendance to interested registrants. Check back for description to be posted soon. Agenda to be posted before the workshop.

3 p.m.

Topic Leader meeting for last-minute preparations, instructions and review presentations briefly. All invited speakers are welcome to join this meeting, including main presenters, as well as general audience oral presenters.

3-6 p.m.

Set up posters (In lobby and conference room)

6:30 pm

Registration, Poster Session, & Reception (Hors d’oeuvres provided)

7:45 pm

Welcome by Dr. Stephen Wells, President, Desert Research Institute

8:00 pm

Keynote Speaker: Dr. Richard Kamens, University of North Carolina

Tue. April 6

6:30 am

Continental Breakfast


Registration Continues


Review of workshop format and procedure, expected outcomes. 


Presentations and Floor Discussion


1— Sampling Issues Related to Organic Speciation of PM and SVOC

1a. How are SVOC and PM associated OC defined

i.  Theoretical Definitions

ii. Operational Definitions (sampling techniques; e.g. filter/sorbent; denuder/filter/sorbent; ESP/sorbent

1b. What are the potential bias or problems associated with different PM and SVOC sampling techniques?

1c. Advances in sampling and analysis of SVOC

1d. Advances in the identification of secondary organic aerosol formation events.

TOPIC LEADER:  Lara Gundel, Lawrence Berkeley National Laboratory

ContributorsDouglas Lane, Environment Canada; Jon Volckens, Environmental Protection Agency, Research Triangle Park.


Coffee Break


2— Analytical Challenges

2a. How do extraction approach and sample handling impact the accuracy of PM and SVOC speciation?

i.  What have we learned and what emerging techniques for sample handling are being developed?

2b. How does analytical approach (instrument/standards) affect accuracy?

2c. What do we know about analysis of different classes of compounds?

i. What emerging techniques are being used to improve analysis of challenging compounds?

TOPIC LEADER:  Monica Mazurek, Rutgers University

ContributorsBerndt Simoneit, Oregon State University; Michelle Schantz, National Institute of Standards and Technology; Stephen Wise, National Institute of Standards and Technology


Five-minute breather



3— Organic Speciation Related To The Source – Receptor Modeling

3a. What organic compounds (or compound classes) are useful for source apportionment?

i.  Do we need more compounds?  Do we need less?  What are the needs of the modeling community?

3b. What are primary versus secondary organics?

i. How can additional measurements help apportion secondary material?

3c. Implications of using multi-variant receptor models (e.g., larger data needs)

TOPIC LEADER:  Eric Fujita, Desert Research Institute

ContributorsTad Kleindienst, EPA Research Triangle Park, North Carolina; Tim Larson, University of Washington, Seattle.




4—Organic Speciation for The Needs of Health Studies

4a. Is there good evidence for the health importance of organic air contaminants?

4b. How is our current knowledge of the air quality-health relationship limited by the present lack of analytical data?

4c. How could health researchers utilize improved information?

4d. How can interactions between the analytical and health research communities be improved?

TOPIC LEADER:  Joe Mauderly, Lovelace National Respiratory Institute

ContributorsJoellen Lewtas, EPA Office of Research and Development; Ron Wyzga, Electric Power Research Institute


15-minute breather



5—Organic Speciation Effects on Regional and Global Scale Atmospheric Chemistry and Climate

5a. How does organic carbon, particularly its individual components, affect atmospheric chemistry, aerosol scattering and absorption, ultraviolet radiation, and climate?

5b. What organic species participate in heterogeneous chemical reactions and secondary organic aerosol formation?

5c. How do atmospheric models treat secondary organic aerosols formation, and what measurement are needed to improve the treatment?

TOPIC LEADER:  Mark Jacobson, Stanford University

ContributorsMartin Schnaiter, Forschungszentrum Karlsruhe, Germany; Song Gao, California Institute of Technology


Close for the day (Dinner on your own)
WED. april 7

6:30 am

Continental Breakfast

8:30 am

6—Unexplained & Unresolved Mass (Hans Puxbaum)

6a. How can organic speciation help define the reconciliation of organic carbon mass measured by thermal techniques?

6b. How do we move towards mass closure of speciated organic PM?

6c. Will measurements of organic macromolecules in bulk be a good next step?

TOPIC LEADER:  Hans Puxbaum, Vienna University of Technology

ContributorAndras Gelencser, Air Chemistry Group of the Hungarian Academy of Sciences.


7—What Types of Measurements are Needed for Exposure Assessment?     What do We Know About Indoor Organic Speciation?

7a. What do we know about indoor and personal organic speciation?

What role does OC play in contributing to personal and indoor PM2.5 vs. outdoor PM?

Current source apportionment findings on potential sources of personal and indoor exposures and the utilities of OC.

What type of measurements are needed for exposure assessment to distinguish classes of OC by gaseous and particle-bound organics and sources?

7b. What are major indoor organic sources?

Organic PM emissions from residential cooking.

7c. What is the extent of infiltrated outdoor sources to indoor and personal environments? These infiltrated sources may include traffic exhaust and woodsmoke.

TOPIC LEADER:  L.-J. Sally Liu, University of Washington

ContributorsWolfgang Rogge, Florida International University; Christopher Simpson, University of Washington






8—Advances in Organic Characterization and Quantification Applicable to Organic Aerosols

8a. Advances in analytical instruments & methods for aerosol speciation

i. Real-time aerosol methods

ii. Advanced methods for polar compounds

TOPIC LEADER:  Reinhard Niessner, Technical University of Munich

ContributorsMarkus Kalberer, ETH Zurich-Hoenggerberg; Paul Ziemann, university of California-Riverside; Kim Prather, University of California- San Diego; Thorsten Hoffmann, Johannes Gutenberg University of Mainz


Poster Session (hors d’oeuvres with wine & beer). Click Here to view posters abstracts.


Open Discussion: Bridging the Gap Between Science and Policy

Tentative Title: Uses of Integrated Assessments of Organic Aerosol Data

Discussion Leaders:  Tom Moore, Western Regional Air Partnership & Brooke Hemming, US EPA Nat'l Center for Environmental Assessment

READ the Abstract. Click Here


Brainstorming Session


Closing: Dinner on your own

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