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Gewählte Publikation:

Joner, EJ; Hirmann, D; Szolar, OH; Todorovic, D; Leyval, C; Loibner, AP.
(2004): Priming effects on PAH degradation and ecotoxicity during a phytoremediation experiment.
Environ Pollut. 2004; 128(3):429-435 FullText FullText_BOKU

Abstract:
An experiment was conducted to distinguish priming effects from the effects of phytoremediation of a creosote-polluted soil. The concentration of 13 polycyclic aromatic hydrocarbons (PAHs), and their combined soil toxicity (using four bioassays), was determined on recently excavated, homogenized soil and on such soil subjected to a time-course phytoremediation experiment with lucerne. The results showed a high priming effect, with minor positive and synergistic effects of planting and fertilization on PAH degradation rates. At the end of the experiment, PAH degradation reached 86% of the initial 519 mg PAHs kg(-1). Two of the four toxicity tests (bioluminescence inhibition and ostracod growth inhibition) corroborated the chemical data for residual PAHs, and indicated a significant reduction in soil toxicity. We conclude that priming effects can easily surpass treatment effects, and that an unintentional pre-incubation that ignores these effects can jeopardize the full quantitative assessment of in situ bioremediation of contaminated soil. (C) 2003 Elsevier Ltd. All rights reserved.
Autor/innen der BOKU Wien:
Loibner Andreas Paul
Todorovic Dragana
BOKU Gendermonitor:

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Find related publications in this database (Keywords)
bioremediation
creosote
ecotoxicity
ostracod test
polycyclic aromatic hydrocarbons


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