Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9749192 | Journal of Chromatography A | 2005 | 8 Pages |
Abstract
An optimized method using stir bar sorptive extraction (SBSE) for the determination of 25 polychlorinated biphenyls (PCBs) from water samples among them three of the most toxic coplanar PCBs (PCB 77, PCB 126 and PCB 169) was developed. Since the investigated PCBs comprise all steps of chlorination (from PCB 1 as monochlorobiphenyl to PCB 209 as decachlorobiphenyl) the results should be representative for the total class of the 209 PCB congeners. For 8Â ml spiked water samples with 2Â ml methanol addition and 2Â h exposure time of stir bars recoveries between 28% (PCB 209) and 93% (PCB 1, PCB 52, PCB 77) were found. Detection limits between 0.05Â ng/l and 0.15Â ng/l were calculated for the combination of SBSE and thermodesorption-GC/MS. The procedure was applied to the investigation of groundwater and river water samples from the industrial region of Bitterfeld northern Leipzig, Germany.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
P. Popp, P. Keil, L. Montero, M. Rückert,