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METHODS TO EVALUATE ARSENIC BIOAVAILABILITY ASSOCIATED WITH THE PRESENCE OF CCA-TREATED WOOD PRODUCTS
Citation:
BRADHAM, K. D., S. L. HARPER, E. A. COPPEDGE, R. KEYS, AND N. T. BASTA. METHODS TO EVALUATE ARSENIC BIOAVAILABILITY ASSOCIATED WITH THE PRESENCE OF CCA-TREATED WOOD PRODUCTS. Presented at 8th International Conference on the Biogeochemistry of Trace Elements, Adelaide, AUSTRALIA, April 03 - 07, 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:
This is an invited paper to be presented by Dr. Karen Bradham at the 8th International Conference on the Biogeochemistry of Trace Elements, Adelaide, Australia, April 3 - 7, 2005. The abstract describes methods to evaluate arsenic bioavailability associated with the presence of CCA-treated wood products. The abstract describes the study design of projects currently being performed in NERL/HEASD and the methods used to evaluate arsenic bioavailability associated with the presence of CCA-treated wood products.