Please use this identifier to cite or link to this item:
|Title:||Evaluation of the use of supercritical fluids for the extraction of explosives and their degradation products from soil|
|Authors:||U.S. Army Engineer Waterways Experiment Station.|
Thorne, Philip G.
Supercritical fluid extraction
|Publisher:||Cold Regions Research and Engineering Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 94-9.|
Abstract: The use of supercritical fluids to extract explosives and degradation products from soil was compared to SW846 Method 8330, which uses a sonic bath with acetonitrile as a solvent. Pure CO2 and CO2 with additional organic solvents were tried under various conditions of time, temperature and pressure. No conditions were found that extracted all of the analytes tested—TNT, TNB, RDX and HMX—with efficiency equal to the standard method. Since the time and solvent usage was greater using supercritical fluids than with solvent extraction, these fluids cannot be recommended as an alternative to acetonitrile.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Special Report|
Files in This Item:
|SR-94-9.pdf||984.58 kB||Adobe PDF|