On September 10-11, 2012, the Nanotechnology Panel co-sponsored a workshop with the George Washington University (GWU) on “Strategies for Setting Occupational Exposure Limits for Engineered Nanomaterials.” The workshop summary was recently published in the journal Regulatory Toxicology and Pharmacology and is available free of charge on the journal’s website.  » View the Full Report

The workshop agenda and presentations are available below.

Welcome and Opening Remark

George Gray, Ph.D., George Washington University, School of Public Health and Health Services

Session 1 – Engineered Nanomaterial OELs – Defining The Need and Desirable Workshop Outcomes

Moderator: George Gray

Session 2 – What Should Trigger the Need for Setting an OEL for an Engineered Nanomaterial (if one already exists for the bulk material)?

Moderator: Alison Elder, Ph.D., University of Rochester

Session 3 – Approaches Used and Proposed for Setting OELs for Engineered Nanomaterials

Moderator: Steve Gordon

Session 4 - Categorical OELs for Engineered Nanomaterials

Moderator: Philip Sayre, Ph.D., U.S. EPA

Session 5 – Comparing Methods Used and Proposed for Setting OELs for Engineered Nanomaterials – Advantages, Limitations, Data Requirements and Research Needs

Moderator: Ken Martinez, NIOSH

  • Traditional quantitative substance-by-substance methods
  • Categorical methods based on comparative toxicity and mode of action information
  • Correspondence between in vitro and short term in vivo response data based on target cell dosimetry
    • Brian Thrall, Ph.D., Pacific Northwest National Laboratory

Session 6 – Practical Workplace Issues Related to Setting and Using Engineered Nanomaterial OELs

Moderator: Candace Tsai, Ph.D., U. Mass Lowell

Session 7 – Workshop Overview and Next Steps – General Discussion

Moderators: Janet Carter and Terry Gordon

  • Key Issues Raised, Areas of Consensus, Remaining Questions
  • Plans for Preparing Workshop Proceedings/Report
  • Opportunities for International Collaboration
  • Future Meetings/Workshops

Concluding Remarks

George Gray


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