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AN341: Extraction of Base/Neutrals and Acids (BNAs) from Large-Volume Samples Using Accelerated Solvent Extraction (ASE)

Instrument Type: Automated Sample Prep

The procedures described in this application note meet the requirements for sample extraction as determined by U. S. EPA Method 3545(A). This method is applicable to the extraction of water-insoluble or slightly water-soluble volatile and semivolatile compounds in preparation for GC/MS measurement. This method is applicable to soils, clays, wastes, and sediments containing from 250–12500 µg/kg of BNA compounds.

AN323: Extraction of Polychlorinated Dibenzo-p-dioxins and Polychlorinated Dibenzofurans from Environmental Samples Using Accelerated Solvent Extraction (ASE)

Instrument Type: Automated Sample Prep

Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are toxic at low concentrations and therefore highly regulated. Additionally, these contaminants are difficult to extract. Accelerated Solvent Extraction (ASE) is an equivalent extraction method for U.S. EPA Methods 3545. ASE uses solvents at elevated temperatures and pressures, thereby increasing the extraction efficiency while consuming small amounts of solvent at significantly less time. Here ASE has been used to extract PCDDs and PCDFs from ground chimney brick, urban dust, fly ash, and sediment samples.

AN317: Extraction of BNAs (Bases, Neutrals, and Acids) Using Accelerated Solvent Extraction (ASE)

Instrument Type: Automated Sample Prep

The procedures described in this application note meet the requirements for sample extraction as determined by U.S. EPA Method 3545. This method is applicable to the extraction of water-insoluble or slightly water-soluble volatile and semivolatile compounds in preparation for gas chromatographic or GC/MS measurement. This method is applicable to soils, clays, wastes, and sediments containing 250–12,500 μg/kg of BNA compounds.