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PERFORMANCE VERIFICATION TEST FOR FIELD-PORTABLE MEASUREMENTS OF LEAD IN DUST
Citation:
Dindal, A. B., R. A. Jenkins, C. K. Bayne, AND E N. Koglin. PERFORMANCE VERIFICATION TEST FOR FIELD-PORTABLE MEASUREMENTS OF LEAD IN DUST. Presented at 2002 American Industrial Hygiene Conference & Exposition, San Diego, CA, June 3-6, 2002.
Impact/Purpose:
The objective of this task is to increase the acceptance and use of site characterization and monitoring technologies by providing verified performance data and reports on the performance of environmental monitoring and site characterization technologies.
Description:
The US Environmental Protection Agency (EPA) Environmental Technology Verification (ETV) program (www.epa.jzov/etv) conducts performance verification tests of technologies used for the characterization and monitoring of contaminated media. The program exists to provide high-quality and credible performance data through third-party testing organizations, to those involved in the approval, selection, purchase, and use of environmental technologies. Under the ETV Program, Oak Ridge National Laboratory (ORNL) conducted a performance verification test of field-portable technologies for the measurement of lead in dust. A strong technical panel of the nation's experts, with representation from the U.S. Department of Housing and Urban Development, the National Institute for Occupational Safety and Health, the National Institute of Standards and Technology, Research Triangle Institute, the American Industrial Hygiene Association, the Massachusetts Childhood Lead Poisoning and Prevention Program, and several EPA offices, including the Office of Pollution Prevention and Toxics (OPPT), assisted with the design of the verification test and the reporting of results. no test consisted of vendors of commercially available technologies capable of measuring lead on dust wipe samples operating their equipment in a field setting. The types of technologies that participated included x-ray fluorescence (XRF) instruments and anodic stripping voltammetry (ASV) systems. The vendors blindly analyzed approximately 150 dust wipe samples containing known amounts of lead, ranging in concentration from 2 to 2000 pg/wipe, with multiple concentrations centered around the clearance levels of 40, 250, and 400. Archived samples from the Environmental Lead Proficiency Analytical Testing (ELPAT) program were utilized. A suite of samples was also sent for simultaneous analysis to a fixed-site laboratory that was recognized under the National Lead Laboratory Accreditation Program (NLLAP). Performance characteristics for each of the participating technologies were evaluated, including accuracy, precision, and comparability to the NLLAP-recognized laboratory performance.