SEDL / STP / STP925-EB / STP18439S

Performance of USEPA Method for Analysis of 2,3,7,8-Tetrachloro-Dibenzo-p-Dioxin in Soils and Sediments by Contractor Laboratories

Garner, FC
Scientist Scientific Supervisor, Lockheed Engineering and Management Services Co., Las Vegas, NV

Homsher, M
Scientist Scientific Supervisor, Lockheed Engineering and Management Services Co., Las Vegas, NV

Pearson, JG
Scientist Scientific Supervisor, Lockheed Engineering and Management Services Co., Las Vegas, NV

Pages: 11    Published: Jan 1986

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Abstract

The United States Environmental Protection Agency's superfund contractor laboratories use the method found in USEPA IFB WA84-A002 to analyze soil and sediment samples for the specific isomer 2,3,7,8-tetrachloro-dibenzo-p-dioxin. This method uses isotope dilution gas chromatography and mass spectrometry (GC/MS). The precision, accuracy, detection limit, isomer specificity, recovery, and other performance parameters are important in evaluating performance of laboratories and methods. The observed performance of this method in the production-line analysis of thousands of samples by eleven contractor laboratories is presented in this paper.