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FY06 ORD PILOT STUDY: DETERMINE BIOAVAILABILITY AND BIOACCESSIBILITY OF ARSENIC IN SOIL AND DEVELOP ARSENIC SPECIATION METHODS
Citation:
BRADHAM, K. D., S. L. HARPER, D. J. THOMAS, AND J. T. CREED. FY06 ORD PILOT STUDY: DETERMINE BIOAVAILABILITY AND BIOACCESSIBILITY OF ARSENIC IN SOIL AND DEVELOP ARSENIC SPECIATION METHODS. Presented at 2005 US EPA Technical Review Meeting, Safety Harbor, FL, November 14 - 18, 2005.
Impact/Purpose:
The objective of this task is to develop state-of-the-science methods for evaluating toxic elements. These methods will include measuring bioavailable concentrations of toxic elements as well as enhanced traditional methods. Once established, the performance of these methods will be demonstrated on a small set of samples. Procedures will be documented such that they are readily transferable to EPA and non-EPA researchers.
Specific objectives of this task include:
1) Development of more sensitive and rapid quantitative procedures for evaluating exposure to toxic elements.
2) Assessment of the bioavailability of toxic elements in environmental media using bioavailability tools.
3) Application of this data to improve the scientific basis of site and source specific risk assessments.
4) Application of these methods to fill critical data gaps identified in the aggregate/cumulative exposure and risk research area of the Human Health Risk Assessment research plan.
Description:
The product is a presentation requested by the organizers of the 2005 US EPA Bioavailability Technical Review Workgroup. It presents an overview, approaches (in-vivo & in-vitro), and logistics of the ORD pilot study on bioavailability of arsenic in soil. The overall project was drafted as a response for OSWER's call for proposals. The research is a collaboration between two NERL divisions, HEASD and MCEARD, and OSWER.