Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

A street deposit sampling method for metal and hydrocarbon contamination assessment

Abstract : Urban surface contamination, by atmospheric deposits as well as human activities, is a major concern for urban pollution management. Besides coarse street deposits which are clearly perceived and easily removed, suspended solid (SS) surface loads and contamination by heavy metals and hydrocarbons are rarely assessed although theycould be of major importance with regards to combined or separate server overflow (CSO and SSO) impacts. Both dry and wet vacuum sampling procedures have been first compared, in the laboratory, using dry and sieved clay or street deposits. Then the wet vacuum sampling procedure has been refined, coupling the injection of water and the hand-brushing of the surface prior to its vacuum cleaning, and evaluated on a car parking area close to the University. Finally this procedure has been assessed in Bearn Street within the 'Le Marais' district in Paris centre, and 34 samples have been analysed for metal and eight for aromatic hydrocarbon contamination. Heavy metal concentrations (0.1-1.7 dry wt. Cu, 0.9-6.1 dry wt. Pb and 1.5-4.6 dry wt. Zn) within street deposit samples collected in Paris centre, indicate a high contamination, especially for copper and zinc, as compared to reported data. Total polyaromatic hydrocarbons (PAHs) are in the 3-11 dry wt. range, thus approxiamtely 10 times less contaminated than dry atmospheric deposits. This paper presents data obtained ans discusses the difficulties encountered when sampling street deposits in busy areas of a city like Paris. The water jet street cleaning procedure used in Paris city workers was tested for its efficiency., by comparison of surface loads before and after the cleaning procedure. Although solids cleaning efficiency is highly variable (20-65%) and somewhat higher for particles larger than 100 µm, particulate metal cleaning efficiency is even more variable (0-75%) and particulate PAHs appear not to be significantly revoved.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [22 références]  Voir  Masquer  Télécharger
Contributeur : Daniel Thevenot Connectez-vous pour contacter le contributeur
Soumis le : mercredi 19 novembre 2014 - 18:01:24
Dernière modification le : vendredi 5 août 2022 - 14:38:11
Archivage à long terme le : : vendredi 20 février 2015 - 11:15:45


Fichiers produits par l'(les) auteur(s)


Distributed under a Creative Commons Paternité 4.0 International License



François-Jerome Bris, Stephane Garnaud, Nicole Apperry, Ana Gonzalez, Jean-Marie Mouchel, et al.. A street deposit sampling method for metal and hydrocarbon contamination assessment. Science of the Total Environment, Elsevier, 1999, 235, pp.211 - 220. ⟨10.1016/S0048-9697(99)00192-8⟩. ⟨hal-01084696⟩



Consultations de la notice


Téléchargements de fichiers