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Auteur (up) Lors, C; Ponge, JF; Damidot, D url  doi
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  Titre Microscopy in addition to chemical analyses and ecotoxicological assays for the environmental hazard assessment of coal tar-polluted soils Type Article scientifique
  Année 2018 Publication Environmental Science and Pollution Research Revue Abrégée Environ. Sci. Pollut. Res.  
  Volume 25 Numéro 3 Pages 2594-2602  
  Mots-Clés coal tar; ecotoxicity; environmental hazard assessment; microscopy; PAHs; pore network  
  Résumé Chemical analysis of soils contaminated with coal tar indicated that most organic compounds, and particularly PAHs, were contained in coarser particles (> 200 µm). Microscopic observations of this fraction, carried out on polished sections, reported the presence of organic particles in addition to mineral particles. Some organic particles had a very low porosity, and their microstructure did not evolve during biotreatment. Alternatively, other organic particles had a large porosity composed of an interconnected pore network that was open to coal tar surface and thus in contact with soil water. Interconnected porosity seemed to increase during biotreatment in relation to a decrease in the amount of organic compounds. The amount of open porosity in contact with soil water was expected to increase the desorption rate of PAHs. Consequently, the environmental hazard could depend on the amount of open porosity in addition to chemical properties of organic particles, such as their concentration in PAHs. Thus, microscopy can be complementary to chemical analysis and ecotoxicological assays to assess the best strategy for remediation but also to follow the advancement of a biotreatment.  
  Adresse Muséum National d'Histoire Naturelle, CNRS UMR 7179, 4 avenue du Petit Château, 91800 Brunoy, France  
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  Langue English Langue du Résumé English Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0944-1344 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000422970600056 Approuvé pas de  
  Numéro d'Appel MNHN @ ponge @ collection 1667  
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