Extraction of PAHs from Urban Dust Using Supercritical Fluids

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 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 502 Method The Extraction of PCBs from River Sediment Place 0.5g of soil/sediment into a 1mL extraction vessel and add 100µL of methanol. Extract sample at specified conditions. Extraction Conditions Extraction vessel: Sample: Pressure: Temperature: CO2 Flow Rate: Collection:…

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…