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Simultaneous Extraction of PAHs and PCBs from Tissue and Soil Samples Using a New Accelerated Solvent Extraction (ASE) Procedure
Oral Presentation
Prepared by R. Jack, R. Carlson, B. Richter, B. Murphy
Thermo Fisher Scientific, 1214 Oakmead Parkway, Sunnyvale, CA, 94085
Contact Information: richard.jack@thermofisher.com; 408-481-4227
ABSTRACT
Laboratories that are involved in food safety or environmental analysis are often dealing with many types of matrices and broad ranges of compounds. In some cases, certain solvents are used for specific analyte types, and more than one extraction of the same sample may be required to obtain the levels of all of the contaminants present. For example, a dichloromethane/acetone mixture is often used for PAHs while hexane/acetone mixtures are often used for PCBs. In many cases, it would be advantageous to have a single extraction procedure for both of these compound classes.
ASE is accepted under USEPA Method 3545A for the extraction of a broad spectrum of compound classes. ASE uses elevated pressures and temperatures to effect rapid extractions with small solvent volumes. We will present the results of our work to develop a single extraction procedure for the determination of PAHs and PCBs in soil and animal tissue samples. Analysis of the PAHs was done by GC-MS, and GC with electron capture was used for the PCBs. In-cell clean-up procedures were used to provide interference free extracts of the animal tissue samples. We will demonstrate the impact of adsorbent and extraction temperature on analyte recovery and amount of coextractables present in the final extract.
Oral Presentation
Prepared by R. Jack, R. Carlson, B. Richter, B. Murphy
Thermo Fisher Scientific, 1214 Oakmead Parkway, Sunnyvale, CA, 94085
Contact Information: richard.jack@thermofisher.com; 408-481-4227
ABSTRACT
Laboratories that are involved in food safety or environmental analysis are often dealing with many types of matrices and broad ranges of compounds. In some cases, certain solvents are used for specific analyte types, and more than one extraction of the same sample may be required to obtain the levels of all of the contaminants present. For example, a dichloromethane/acetone mixture is often used for PAHs while hexane/acetone mixtures are often used for PCBs. In many cases, it would be advantageous to have a single extraction procedure for both of these compound classes.
ASE is accepted under USEPA Method 3545A for the extraction of a broad spectrum of compound classes. ASE uses elevated pressures and temperatures to effect rapid extractions with small solvent volumes. We will present the results of our work to develop a single extraction procedure for the determination of PAHs and PCBs in soil and animal tissue samples. Analysis of the PAHs was done by GC-MS, and GC with electron capture was used for the PCBs. In-cell clean-up procedures were used to provide interference free extracts of the animal tissue samples. We will demonstrate the impact of adsorbent and extraction temperature on analyte recovery and amount of coextractables present in the final extract.