Evaluation of the Use of Supercritical Fluids for the Extraction of Explosives and Their Degradation Products from Soil
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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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. Degradation products, Nitramines, Supercritical fluid extraction, Explosives, Nitroaromatics, Soil contamination.
- Organic Chemistry
- Physical Chemistry
- Soil Mechanics
- Ammunition and Explosives