Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Fate and bioavailability of C-14-pyrene and C-14-lindane in sterile natural and artificial soils and the influence of aging
AU - Smidova, Klara
AU - Hofman, Jakub
AU - Ite, Aniefiok E.
AU - Semple, Kirk T.
PY - 2012/12
Y1 - 2012/12
N2 - Soil organic matter is used to extrapolate the toxicity and bioavailability of organic pollutants between different soils. However, it has been shown that other factors such as microbial activity are crucial. The aim of this study was to investigate if sterilization can reduce differences in the fate and bioavailability of organic pollutants between different soils. Three natural soils with increasing total organic carbon (TOC) content were collected and three artificial soils were prepared to obtain similar TOCs. Soils were sterilized and spiked with C-14-pyrene and C-14-lindane. Total C-14 radioactivity, HPCD extractability, and bioaccumulation in Eisenia fetida were measured over 56 days. When compared to non-sterile soils, differences between the natural and artificial soils and the influence of soil-contaminant contact time were generally reduced in the sterile soils (especially with middle TOC). The results indicate the possibility of using sterile soils as "the worst case scenario" in soil ecotoxicity studies. (C) 2012 Elsevier Ltd. All rights reserved.
AB - Soil organic matter is used to extrapolate the toxicity and bioavailability of organic pollutants between different soils. However, it has been shown that other factors such as microbial activity are crucial. The aim of this study was to investigate if sterilization can reduce differences in the fate and bioavailability of organic pollutants between different soils. Three natural soils with increasing total organic carbon (TOC) content were collected and three artificial soils were prepared to obtain similar TOCs. Soils were sterilized and spiked with C-14-pyrene and C-14-lindane. Total C-14 radioactivity, HPCD extractability, and bioaccumulation in Eisenia fetida were measured over 56 days. When compared to non-sterile soils, differences between the natural and artificial soils and the influence of soil-contaminant contact time were generally reduced in the sterile soils (especially with middle TOC). The results indicate the possibility of using sterile soils as "the worst case scenario" in soil ecotoxicity studies. (C) 2012 Elsevier Ltd. All rights reserved.
KW - POLYCYCLIC AROMATIC-HYDROCARBONS
KW - ORGANIC-MATTER
KW - HYDROXYPROPYL-BETA-CYCLODEXTRIN
KW - BLACK CARBON
KW - PHENANTHRENE
KW - Aging
KW - HPCD extraction
KW - EISENIA-FOETIDA
KW - CONTAMINATED SOILS
KW - POPs bioavailability
KW - Artificial soil
KW - Bioaccumulation
KW - ENCHYTRAEUS-ALBIDUS
KW - EXTRACTION TECHNIQUE
KW - SORPTION
U2 - 10.1016/j.envpol.2012.07.031
DO - 10.1016/j.envpol.2012.07.031
M3 - Journal article
VL - 171
SP - 93
EP - 98
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
ER -