Desorption kinetics of PAHs from aged industrial soils for availability assessment
| Autor: | Stéphanie Ouvrard, Christophe Robin, Christophe Barnier, Jean Louis Morel |
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| Přispěvatelé: | Laboratoire Sols et Environnement (LSE), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), Laboratoire Agronomie et Environnement (LAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Pollution
Desorption kinetics Environmental Engineering media_common.quotation_subject Tenax [SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy Soil Bioremediation PAHs Industrial soils Soil Pollutants Environmental Chemistry Solid phase extraction Polycyclic Aromatic Hydrocarbons Waste Management and Disposal media_common Pollutant Tenax (R) extraction Extraction (chemistry) Modeling Availability Soil contamination 6. Clean water Kinetics Biodegradation Environmental 13. Climate action Environmental chemistry Soil water Environmental science Adsorption |
| Zdroj: | Science of the Total Environment Science of the Total Environment, Elsevier, 2014, 470, pp.639-645. ⟨10.1016/j.scitotenv.2013.10.032⟩ |
| ISSN: | 0048-9697 1879-1026 |
| Popis: | International audience; Persistent organic pollutants (POPs), such as polycyclic aromatic hydrocarbons (PAHs), may be found in high concentrations in soils of former industrial sites including manufactured gas plants or coking plants. Techniques using moderate solvent extraction, biological tests or solid phase extraction have proved useful for pollution availability estimation. However, more accurate and reliable measurement tools specifically adapted to low concentrations are still needed. Based on a solid-liquid extraction using a Tenax (R) resin, we suggest a protocol to assess the bioavailability of PAHs, dedicated to aged industrial wasteland soils. Desorption kinetics were measured on three representative contaminated industrial soils. Results were modeled using a first order two-compartment model that provided an estimate of the rapidly desorbing fraction, which was considered to be available, over a 30 h extraction period. In conclusion, this method, allowing the measurement of the available fraction, might prove more relevant than the total concentration value when assessing soil contamination related risks. It may also predict achievable bioremediation performances. |
| Databáze: | OpenAIRE |
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