The Extraction of PCBs from River Sediment

SCF 511 Extraction of PAHs from Soil Using Supercritical Fluids Introduction Supercritical CO2 alone easily dissolves polyaromatic hydrocarbons (PAHs) from spiked matrices, but not from weathered, aged samples. The addition of a small amount of co-solvent is necessary to displace…

SCF 509 Method Extraction of PAHs from Urban Dust Using Supercritical Fluids Place 1.0g of soil/sediment into a 5mL extraction vessel and add 1mL of tri-sil. Extract sample at specified conditions. Extraction Conditions Extraction vessel: Sample: Pressure: Temperature: CO2 Flow…

SCF 510 Extraction of PAHs from Urban Air Particulates Using Supercritical Fluids Introduction Supercritical CO2 alone easily dissolves polyaromatic hydrocarbons (PAHs) from spiked matrices, but not from weathered, aged samples. An extraction at high temperatures is necessary to increase the…

SCF 508 Extraction of Total Petroleum Hydrocarbons (TPH) from Soil Using Supercritical Fluids Introduction The United States Environmental Protection Agency (EPA) estimates that there are presently 5 – 7 million underground storage tanks in the United States. Approximately 1.6 million…