Application of off-line supercritical fluid extraction for the routine analysis of PCBs in environmental matrices
PCBs are used as model molecules in supercritical fluid extraction (SFE) and, as a result, a variety of environmental matrices have been investigated. The majority of these studies have been carried out with samples contaminated at high levels (in the micro-g/g range or higher). The aim of this work is to investigate the use of SFE with solid phase trapping for the routine interference-free analysis of PCBs in real environmental matrices contaminated at levels down to a few ng/g. Methods have been developed for the analysis of sewage sludge, sulphur contaminated sediments, lyophilised fish tissue and soil. Results obtained show that by choosing the right extraction conditions, trap material, trap temperature and eluent it is possible on a routine basis to perform interference free congener specific analysis of PCBs in a range of environmental samples by off-line SFE and GC-ECD.
Bibliographic Reference: Paper presented: 5th International Symposium on Supercritical Fluid Chromatography and Extraction, Baltimore (US), January 11-14, 1994
Availability: Available from (1) as Paper EN 38047 ORA
Record Number: 199410086 / Last updated on: 1994-11-28
Original language: en
Available languages: en