A simple method for the quantitative microextraction of polychlorinated biphenyls from soils and sediments.
We demonstrate the quantitative extraction of polychlorinated biphenyls (PCBs) from environmental solids by using a microscale adaptation of pressurized fluid extraction ({mu}PFE). The stainless steel extraction cells are filled with a solid sample and solvent and are heated at elevated temperature. After cooling the cell to room temperature, we determined PCBs in the extract by direct injection to a gas chromatograph with an electron capture detection system. This extraction method was tested on a set of PCB-spiked solid matrices and on a PCB-contaminated river sediment (KIST SRM 1939). Recoveries were measured for eight PCB congeners spiked into two soil types with hexane extraction at 100{sup o}C (>81.9 {+-} 5.4% to 112.5 {+-} 10.1 %). The extraction process for SRM 1939 with hexane at 300{sup o}C provided significantly higher recoveries for several representative PCB congeners than reported for a duplicate 16-hour Soy-Wet extraction with a mixture of organic solvents (acetone/hexane).
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- EM
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942610
- Report Number(s):
- ANL/ER/JA-32953
- Journal Information:
- Chemosphere, Journal Name: Chemosphere Journal Issue: 13 ; 1999 Vol. 38; ISSN CMSHAF; ISSN 0045-6535
- Country of Publication:
- United States
- Language:
- ENGLISH
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