Accession Number : ADA292695
Title : Collaborative Study of Soils Spiked with Volatile Organic Compounds,
Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Personal Author(s) : Hewitt, Alan D. ; Grant, Clarence L.
PDF Url : ADA292695
Report Date : JAN 1995
Pagination or Media Count : 16
Abstract : Vapor fortification is a method of spiking soils with volatile organic compounds (VOCs) that was recently developed for producing materials suitable for performance evaluation and quality assurance/quality control (QA/QC). Using this treatment method, soil subsamples enclosed in heat-sealed glass ampoules were distributed to 16 laboratories for a collaborative round-robin study. The sample sets consisted of duplicates of three different soils. Each soil subsample had been vapor-fortified with the following VOCs: trans-1,2-dichloroethylene (TDCE), trichloroethylene (TCE), benzene (Ben) and toluene (Tol). The laboratories were requested to report analyte concentration estimates for these four analytes and any other detected organic compounds after performing a methanol extraction, purge-and-trap gas chromatography, mass spectrometry analysis. The results from the 12 laboratories that met all of the design criteria produced a range of relative standard deviations from 8.5 to 28.2%, with a pooled standard deviation of less than 13%. The smallest range of consensus values was for Ben (pooled RSD = 9.0%), while the determination of TDCE showed the greatest overall uncertainty (pooled RSD = 20.3%). This round-robin effort confirmed that the use of vapor-fortified soils sealed in glass ampoules is a precise way of preparing and storing VOC-spiked soil subsamples. (AN)
Descriptors : *BENZENE, *VOLATILITY, *SOIL POLLUTION, *HAZARDOUS WASTES, UNCERTAINTY, EXPERIMENTAL DATA, LABORATORY TESTS, VAPORS, METHANOLS, QUALITY CONTROL, CONCENTRATION(COMPOSITION), EXTRACTION, QUALITY ASSURANCE, SOIL CHEMISTRY, QUALITATIVE ANALYSIS, STANDARD DEVIATION, SOIL TESTS, FORTIFICATIONS, GAS CHROMATOGRAPHY, TRICHLOROETHYLENE, MASS SPECTROMETRY, TOLUENES.
Subject Categories : Organic Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE