TITLE
Standard Operating Procedure for Preparation of Method Evaluation
Materials for Lead in Dust

AUTHOR(S)
D. A. Binstock, E. D. Estes., E. Williams, J. D. Neefus, and
W. F. Gutknecht

PERFORMING ORGANIZATION NAME AND ADDRESS
Research Triangle Institute
P.O. Box 12194
Research Triangle Park, NC  277092194

SPONSORING AGENCY NAME AND ADDRESS
Atmospheric Research and Exposure Assessment Laboratory
Office of Research and Development
U.S. Environmental Protection Agency
Research Triangle Park, NC  27711

ABSTRACT
The procedure used to prepare lead (Pb) in dust method evaluation
materials from realworld dust is described.  Materials prepared
using this procedure have been found suitable for use as quality
control check samples as well as for evaluation of new methods. 
Procedures described include collection of materials, preliminary
cleanup, homogenization, verification, and packaging.