Protective role of fine silts for PAH in a former industrial soil

Responses of functional and taxonomic collembolan community structure to site management in Mediterranean urban and surrounding areas

“…Total metal concentrations were measured following the US EPA method [39]: an aliquot of 0.5 g of pulverized (250 mm) and dried soil sample was digested with 10 ml of HNO 3 (65%, Sigma-Aldrich, Germany), 5. added to the soil to remove, respectively, the molecular sulfur and the remaining water, and then an aliquot of 1 g of soil was placed in the ASE corers of the automated extractor Dionex ® ASE 350 [40]. The extractions were performed using dichloromethane at 100 C and at 130 bars.…”

Selection of oxidant doses for in situ chemical oxidation of soils contaminated by polycyclic aromatic hydrocarbons (PAHs): A review

“…Amellal et al [212] studied PAH bioavailability in a contaminated soil and showed that PAHs were highly concentrated in the fine silt (particle size: 2 -20 µm) and clay (less than 2 µm) fractions. Similarly, Pernot et al [98] investigated PAH repartition in a former coking plant soil and observed that PAHs were much more concentrated in fine silts than in the other fractions.…”

“…ligand exchange, polyvalent cation bridges, van der Waals forces or complexation of metal ions [98,202]. Secondly, reduced minerals (e.g.…”

“…Sequestration is due mainly to sorption to fresh natural and fossil organic matter, adsorption onto mineral surfaces, diffusion into soil micropores and encapsulation [46,[84][85][86][87]. Its extent depends on the chemical properties of individual PAHs [39,88,89] and on the physical and chemical characteristics of the soil [39,74,[90][91][92][93][94][95][96][97][98][99][100]. In particular, sorption of hydrophobic organic compounds to fossil or anthropogenic organic matter is much slower but much stronger than sorption to other materials [101][102][103][104][105][106][107].…”

A Technosol as archives of organic matter related to past industrial activities

“…Under some conditions (e.g. sorption and mineral-bound protection, low microbial degradation), anthropogenic OM was preserved, and can be used as archives of the past human activities (Coulon et al, 2013;Pernot et al, 2013). In order to better understand the formation, functioning and evolution of Technosols, a former settling pond of iron and steel industry, colonized by vegetation, was thoroughly characterized.…”