NDLI: Fate of PAHs and Hetero-PAHs during Biodegradation in a Model Soil/Compost-System: Formation of Extractable Metabolites

Content Provider	Springer Nature Link
Author	Meyer, Susanne Steinhart, Hans
Copyright Year	2001
Abstract	The formation of extractable metabolites of PAHs andhetero-PAHs during biodegradation was investigated in three artificially contaminated AhA1-horizon/compost-mixtures spikedwith (a) a PAH-mixture consisting of nine compounds, (b) a hetero-PAH-mixture consisting of ten compounds, and (c) a mixture of these nine PAHs and ten hetero-PAHs. 30 PAH-metabolites and 4 hetero-PAHs metabolites were identified byHPLC-DAD and GC-MSD, predominantly aromatic ketones, quinones,hydroxylated and dihydroxylated compounds. Several of thesemetabolites such as 1-acenaphthenone, 4-hydroxy-9-fluorenone,9,10-phenanthrenedione, 1-hydroxyacenaphthene, dihydroxyacenaphthene or the hetero-PAH-metabolites 2-hydroxyquinoline, dibenzothiophenesulfoxide, dibenzothiophenesulfone, and hydroxydibenzofuran have not beenidentified in previous soil degradation studies. The vastmajority of extractable metabolites showed only short-timeaccumulation followed by either further degradation orformation of bound residues, respectively. In the PAH- andhetero-PAH-contaminated soil systems formation of metaboliteswas delayed due to the delay in degradation of most parentcompounds in these soil systems. As some of the PAH-metabolitesshowed considerable accumulation or persistence at the end ofthe investigation period, further studies including toxicitytesting of metabolites are required to finally assess therelevance of extractable metabolites during bioremediation ofcontaminated soil.
Starting Page	215
Ending Page	231
Page Count	17
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	132
Issue Number	3-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2001-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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