||Round-robin testing of methods for collecting dislodgeable residues from carpets /
Fortune, C. R.
||ManTech Environmental Technology, Inc., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
|| U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory,
Pesticides--Environmental aspects. ;
Pesticide residues ;
Collecting methods ;
Piperonyl butoxide ;
Standard deviation ;
Statistical analysis ;
Quality assurance ;
Quality control ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||76 pages ; 28 cm
A round-robin test was conducted using six volunteer participants to evaluate three dislodgeable residue methods in sampling on new carpets treated with a commercial pesticide formulation. Seven separate tests were performed, each using a formulation containing three target pesticides (chlorpyrifos, pyrethrin I, and piperonyl butoxide). Strict QA/QC guidelines were followed as each participant performed replicate sampling with the Southwest Research Institute polyurethane foam (PUF) roller, the California roller, and the Dow drag sled methods. Sampling precision, as determined by the percent relative standard deviation (%RSD) for three replicate samples, was high for all three methods for measurements of this type. The transfer efficiency rates found in this study were substantially higher than those reported in earlier studies of this type.
"R.G. Lewis, work assignment manager." "April 1997." "Contract 68-D5-0049." Microfiche.