Aerobic Bioremediation of PAH Contaminated Soil Results in Increased Genotoxicity and Developmental Toxicity.
作者： Leah Chibwe , Mitra C. Geier , Jun Nakamura , Robert L. Tanguay , Michael D. Aitken
关键词: Environmental chemistry 、 Bioassay 、 Genotoxicity 、 Soil contamination 、 Bioremediation 、 Soil water 、 Chemistry 、 Polycyclic aromatic hydrocarbon 、 Biodegradation 、 Coal tar
摘要: The formation of more polar and toxic polycyclic aromatic hydrocarbon (PAH) transformation products is one the concerns associated with bioremediation PAH-contaminated soils. Soil contaminated coal tar (prebioremediation) from a former manufactured gas plant (MGP) site was treated in laboratory scale bioreactor (postbioremediation) extracted using pressurized liquid extraction. soil extracts were fractionated, based on polarity, analyzed for 88 PAHs (unsubstituted, oxygenated, nitrated, heterocyclic PAHs). PAH concentrations tested, postbioremediation, lower than their regulatory maximum allowable (MACs), exception higher molecular weight (BaA, BkF, BbF, BaP, IcdP), most which did not undergo significant biodegradation. extract fractions tested genotoxicity DT40 chicken lymphocyte bioassay developmental toxicity embryonic zebrafish (Danio rerio) bioassay. A statistical...
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