XAD resins are used as solid phase extraction materials for applications in water and air sampling. When received, resins are wet and contain contaminants. The current methods for cleaning and eluting require large amounts of solvent and time. Here, an XAD-2 resin is cleaned using ASE, then spiked with organochlorine pesticides (OCP) and polyaromatic hydrocarbons (PAH) standards and eluted using ASE. The results show that ASE effectively and efficiently cleans and dries the resin without damaging the particles, and is able to elute OCP and PAH compounds from XAD resin with good results.

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.

Polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs) belong to a broad family of synthetic organic compounds known as halogenated hydrocarbons. Polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs) belong to a broad family of synthetic organic compounds known as halogenated hydrocarbons. The method reported here is applicable for the determination of 29 halogenated hydrocarbons (6 PCBs, 16 OCPs, and 7 PBDEs) in fish tissues.

The Thermo Scientific Trace 1310 ISQ system is applied for the direct injection of extracted organochlorine pesticide and pyrethroid samples. Separation is performed on a Thermo Scientific TraceGOLD TG-5SilMS column with MS SIM detection.

The Thermo Scientific Trace 1310 ISQ system is applied for the direct injection of extracted organochlorine pesticide samples. Separation is performed on a Thermo Scientific TraceGOLD TG-5SilMS column with MS SIM detection.