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.

Accelerated solvent extraction provides a more convenient, faster, and less solvent intensive method than previously available for the extraction of PAHs from solid wastes. This Application Note updates the work that was done in Thermo Scientific Application Note 313 (AN 313) for the extraction of PAHs from environmental samples. A Thermo Scientific™ Dionex™ ASE™ 350 Accelerated Solvent Extractor system was used for the extraction and Thermo Scientific™ ISQ™ Single Quadrupole GC-MS system to analyze 16 PAHs from soil.

To provide an application for the analysis of polycyclic aromatic hydrocarbons using the Thermo Scientific™ Hypersil GOLD VANQUISH™ 1.9 µm column and Thermo Scientific™ Vanquish H™ UHPLC system

The Thermo Scientific TRACE GC Ultra is applied for the analysis of polycyclic aromatic hydrocarbons (PAHs). The separation was performed on a Thermo Scientific TraceGOLD TG-17SilMS GC column, with MS detection. The unique selectivity of this stationary phase is shown to fully resolve benzo(j)fluoranthene from benzo(b)fluoranthene and benzo(k)fluoranthene.

Demonstration of the advantages of using the Thermo Scientific Accucore Vanquish C18+, 1.5 μm column and Thermo Scientific Vanquish UHPLC system for the fast analysis of polycyclic aromatic hydrocarbons (PAHs). The advanced capabilities of the Vanquish UHPLC system allow the Accucore Vanquish columns to be operated at high flow rates that enable development of rapid analytical methods while maintaining high performance