Publication details

Variability of standard artificial soils: Physico-chemical properties and phenanthrene desorption measured by means of supercritical fluid extraction.

Authors

BIELSKÁ Lucie HOVORKOVÁ Ivana KOMPRDOVÁ Klára HOFMAN Jakub

Year of publication 2012
Type Article in Periodical
Magazine / Source Environmental Pollution
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.1016/j.envpol.2011.12.009
Field Soil contamination adn decontamination incl. pesticides
Keywords Phenanthrene; Polycyclic aromatic hydrocarbons (PAHs); Artificial soil; Sorption; Supercritical fluid extraction (SFE)
Description The study is focused on artificial soil which is supposed to be a standardized "soil like" medium. We compared physico-chemical properties and extractability of Phenanthrene from 25 artificial soils prepared according to OECD standardized procedures at different laboratories. A substantial range of soil properties was found, also for parameters which should be standardized because they have an important influence on the bioavailability of pollutants (e.g. total organic carbon ranged from 1.4 to 6.1%). The extractability of Phe was measured by supercritical fluid extraction (SFE) at harsh and mild conditions. Highly variable Phe extractability from different soils (3-89%) was observed. The extractability was strongly related (R-2 = 0.87) to total organic carbon content, 0.1-2 mm particle size, and humic/fulvic acid ratio in the following multiple regression model: SFE (%) = 1.35 * sand (%) - 0.77 * TOC (%)2 + 0.27 * HA/FA.
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