Development of phenanthrene catabolism in natural and artificial soils

The characteristics of natural soils often vary from those of artificial soil (e.g. OECD), which may lead to substantial differences in the bioavailability of test substances. The aim of this investigation was to characterise the development of phenanthrene catabolism in both natural and artificial...

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Bibliographic Details
Published in:Environmental pollution (1987) 2008-03, Vol.152 (2), p.424-430
Main Authors: Rhodes, Angela H., Hofman, Jakub, Semple, Kirk T.
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Artificial soil
biodegradation
Biodegradation, Environmental
Biological and medical sciences
Carbon Radioisotopes - analysis
Catabolism
Ecology - methods
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
General aspects
mineralization
Natural soil
PAHs
phenanthrene
Phenanthrenes - analysis
Soil
soil chemical properties
Soil Microbiology
soil organic carbon
soil physical properties
Soil Pollutants - analysis
soil pollution
Time
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Summary:The characteristics of natural soils often vary from those of artificial soil (e.g. OECD), which may lead to substantial differences in the bioavailability of test substances. The aim of this investigation was to characterise the development of phenanthrene catabolism in both natural and artificial soils with varying total organic carbon (TOC) content after 1, 14, 42 and 84 d soil–phenanthrene contact time. Indigenous catabolic activity was measured via the addition of 14C-phenanthrene using the respirometric soil slurry assay. Notably, the lag phases, fastest rates and total extents of 14C-phenanthrene degradation were relatively comparable in soils with similar TOC content after 1 d contact time. However, natural soils generally exhibited significantly shorter lag phases, faster rates and higher extents of mineralisation, than their artificial counterparts after 42 and 84 d contact time. Such findings suggest that the extrapolation of results from artificial soils to real/natural soils may not be straightforward. Natural and artificial soils display different phenanthrene mineralisation profiles suggesting that the extrapolation of results from artificial soils to real/natural soils may not be straightforward.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2007.06.072