Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Fate and behaviour of phenanthrene in the natural and artificial soils.
AU - Hofman, Jakub
AU - Rhodes, Angela
AU - Semple, Kirk T.
PY - 2008/3
Y1 - 2008/3
N2 - OECD artificial soil has been used routinely as a standardized substrate for soil toxicity tests. However, can be the fate, behaviour and effects of contaminants in artificial soil extrapolated to natural soils? The aim of our study was to verify this hypothesis by comparing the loss, extraction, and bioavailability of phenanthrene in three artificial and three natural soils of comparable organic carbon content. Soils were spiked with C-14-phenanthrene and total C-14-activity change, the fractions extracted by dichloromethane, 70% ethanol, and hydroxypropyl-beta-cyclodextrin, the fraction mineralized by Pseudomonas sp., and taken up by Enchytraeus albidus were measured after 1, 14, 42, and 84 d aging. The loss, extraction, biodegradation and uptake were several times lower in the artificial than natural soils and these differences increased with increasing soil-phenanthrene contact time. These results imply that artificial soil should be used cautiously for the prediction of fate and behaviour in natural soils. (C) 2007 Elsevier Ltd. All rights reserved.
AB - OECD artificial soil has been used routinely as a standardized substrate for soil toxicity tests. However, can be the fate, behaviour and effects of contaminants in artificial soil extrapolated to natural soils? The aim of our study was to verify this hypothesis by comparing the loss, extraction, and bioavailability of phenanthrene in three artificial and three natural soils of comparable organic carbon content. Soils were spiked with C-14-phenanthrene and total C-14-activity change, the fractions extracted by dichloromethane, 70% ethanol, and hydroxypropyl-beta-cyclodextrin, the fraction mineralized by Pseudomonas sp., and taken up by Enchytraeus albidus were measured after 1, 14, 42, and 84 d aging. The loss, extraction, biodegradation and uptake were several times lower in the artificial than natural soils and these differences increased with increasing soil-phenanthrene contact time. These results imply that artificial soil should be used cautiously for the prediction of fate and behaviour in natural soils. (C) 2007 Elsevier Ltd. All rights reserved.
KW - organic contaminants
KW - artificial soil
KW - extractability
KW - bioavailability
U2 - 10.1016/j.envpol.2007.05.034
DO - 10.1016/j.envpol.2007.05.034
M3 - Journal article
VL - 152
SP - 468
EP - 475
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
IS - 2
ER -