Direct Determination of Benzo(a)pyrene and Pyrene in Solid Environmental Samples by Jet-Cooled Spectroscopy |
| |
| Authors: | John K Lai Stephen V Filseth Chester M Sadowski Fred J Morgan |
| |
| Institution: | 1. Department of Chemistry , York University , 4700, Keele Street, North York, Ontario, Canada , M3J 1P3;2. Department of Physics , York University , 4700 Keele Street, North York, Ontario, Canada , M3J 1P3 |
| |
| Abstract: | Abstract We report the direct determination of two polycyclic aromatic hydrocarbons (PAH), Benzo(a)Pyrene B(a)P] and Pyrene (Pyr), in solid environmental samples, i.e. a marine sediment and scrapings from the interior walls of a steel foundry, by the supersonic jet/laser induced fluorescence technique. We have found limits of detection (LOD) for these samples of 900ng (1.8ppm) for B(a)P and 200ng (0.4ppm) for Pyr. The LOD's for prepared solutions were 100 ng for B(a)P and 40 ng for Pyr. In validating the procedure we have also analyzed a standard mixture of PAH. The results of our analyses of the solid environmental samples agree well with those obtained by chromatography in other laboratories. We have found evidence of incomplete recovery of PAH from soil sediments by a prolonged low temperature Soxhlet extraction using methylene chloride. |
| |
| Keywords: | Benzo(a)pyrene pyrene direct determination jet-cooled spectroscopy |
|
|
