Skip common site navigation and headers
United States Environmental Protection Agency
Exposure Research
Begin Hierarchical Links EPA Home > Research & Development > Exposure Research > Publications/Presentations > End Hierarchical Links

 

Data Collected in the EPA's National Exposure Research Laboratory's Field Measurement Studies to Evaluate Aggregate Exposure

spacer
spacer
Abstract: The Food Quality Protection Act of 1996 requires children's risk assessments to be conducted using high quality and high quantity data. Currently, data on children's exposures and exposure factors are limited and insufficient to address risk assessments that do not rely heavily on default assumptions. Researchers in the U.S. Environmental Protection Agency's National Exposure Research Laboratory (NERL) have been conducting human exposure measurement studies to collect environmental, biological, and activity pattern data that can be used in the risk assessment process to evaluate young children's potential exposures to pesticides in order to reduce the reliance on standard default assumptions. Inhalation, dermal, and ingestion algorithms for indoor and outdoor locations where young children may spend their time are evaluated using the field measurement and exposure factor data collected. In addition, pesticide inventories, time-activity diaries, household habits, and occupant characteristics are collected to aid in the exposure assessment. Our systematic approach to collecting measurement and exposure factor data has helped us to recognize where the biggest data gaps and uncertainties still exist. For example, indirect ingestion exposure factors are difficult to quantify in field studies. This presentation will focus on the various types of data collected in the NERL's field measurement studies to help better characterize the exposure factors needed by the U.S. EPA's Office of Pesticide Programs to understand and evaluate young children's potential exposures. We will also discuss ways to reduce the data gaps that still exist.

This work has been funded wholly or in part by the United States Environmental Protection Agency. It has been subjected to Agency review and approved for publication.
spacer
Citation:Tulve, N. S., R. C. Fortmann, E. A. Cohenhubal, and L. S. Sheldon. Data Collected in the EPA's National Exposure Research Laboratory's Field Measurement Studies to Evaluate Aggregate Exposure. Presented at Society of Risk Analysis Annual Meeting, Baltimore, MD, December 7-10, 2003.
spacer
spacer
Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
spacer
Division: Human Exposure & Atmospheric Sciences Division
spacer
Branch: Exposure Measurements & Analysis Branch
spacer
Product Type: Abstrct/Oral
spacer
Presented: 12/09/2003
spacer
spacer

 

ORD Home | Search EPA | Search NERL | Search EIMS | Contacts | Help

 
Begin Site Footer

EPA Home | Privacy and Security Notice | Contact Us

Last Updated on Monday, October 22, 2007
URL: http://cfpub.epa.gov