Volume 25, Issue 4 (July 1997)
Development and Precision Testing of a Standard Test Method for Screening Fuels in Soils
The ASTM Standard Test Method for Screening Fuels in Soils (D-5831-95), uses low-toxicity chemicals and can be used to screen organic-rich soils. It is also fast, easy, and inexpessive to perform. This screening method calls for extracting a sample of soil with isopropyl alcohol following treatment with calcium oxide. The resulting extract is filtered, and the ultraviolet absorbance of the extract is measured at 254 nm.
A collaborative study was conducted to determine the reproducibility (between participants) and repeatability (within participant) precision of the method when it is applied to a sand and an organic soil spiked with various concentrations of diesel fuel. The data generated in this study are specific to the test materials used. However, these data provide information on the variability that can be expected when the screening method is used by one or more users. Information obtained from the collaborative study will help potential users assess the usefulness of the screening method for their proposed applications.