Abstract
Ozonation of polycyclic aromatic hydrocarbons (PAHs) in soil is a process that can be used for in-situ soil remediation or in combination with bioremediation techniques. First steps to a comprehensive ecotoxicological evaluation of this method is done by ozonation of radioactively labeled (14C) pyrene and benzo[a]pyrene in a silty soil (LUFA 2.2) under mass-balancing conditions and GC-MS analysis of aromatic ozonation products. 14C-Mass-balances for pyrene and benzo[a]pyrene (b[a]p) in soil showed that, apart from 14CO2 formation, considerable percentages of both PAHs are oxidized to water soluble substances (20–30%) or to non-extractable or bound residues (10% for pyrene, 30% for b[a]p). TLC and GC-MS analysis of ozonation products extractable from artificially contaminated silica and soil by organic solvents revealed a large number of aromatic substances. PAH-quinones and ten ring fission products with formyl- and carboxy-groups of both pyrene and b[a]p could be identified.
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Received: 11 March 1997 / Accepted: 25 April 1997
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Eberius, M., Berns, A. & Schuphan, I. Ozonation of pyrene and benzo[a]pyrene in silica and soil –14C-mass balances and chemical analysis of oxidation products as a first step to ecotoxicological evaluation. Fresenius J Anal Chem 359, 274–279 (1997). https://doi.org/10.1007/s002160050572
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DOI: https://doi.org/10.1007/s002160050572