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Titre du document / Document title

Origin and evolution of Pb in sediments of Lake Geneva (Switzerland-France). Establishing a stable Pb record

Auteur(s) / Author(s)

MONNA F. (1) ; DOMINIK J. (1 2) ; LOIZEAU J.-L. (1 2) ; PARDOS M. (1) ; ARPAGAUS P. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Institut FA FOREL, 10 route de Suisse, 1290 Versoix, SUISSE
(2) Centre d'Etudes en Sciences Naturelles de l'Environnment, 10 route de Suisse, 1290 Versoix, SUISSE

Résumé / Abstract

Pb isotopes and Pb concentrations were measured in two sediment cores sampled in Lake Geneva (i) at the center of the basin (central plain) and (ii) in an area which receives the effluents of the wastewater treatment plant of Lausanne as well as runoff inputs. The presence of an anthropogenic contribution is observed over all the sampled period (∼150 years), even at the center of the lake. At both sites, the maximum contamination of Pb occurred in the late 1970s, and has declined to present. The site close to Lausanne received much more Pb than the one at the center of the lake. Surprisingly, the Pb isotopes show that gasoline-derived Pb has had a minor influence, at least over the last 20 years. Instead, deposition of Pb from industrial (and domestic) activities predominates. This study demonstrates that one of the major limitations of the isotopic method is the poor (or partial) knowledge of how the isotopic compositions of potential sources have evolved through the past. A simple method of sample dissolution, based on HNO3 leaching assisted by microwave, is also presented. We believe that this sample preparation can be extensively used because it provides a reliable estimate of Pb having an anthropogenic origin.

Revue / Journal Title

Environmental science & technology    ISSN  0013-936X   CODEN ESTHAG 

Source / Source

1999, vol. 33, no17, pp. 2850-2857 (46 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Chemical Society, Washington, DC, ETATS-UNIS  (1967) (Revue)

Mots-clés anglais / English Keywords

Switzerland

;

Water pollution

;

Lakes

;

Lake sediments

;

Heavy metal

;

Lead

;

Chemical analysis

;

Content

;

Isotopic analysis

;

Pollution source inventory

;

Anthropogenic factor

;

Waste water discharge

;

Fresh water discharge

;

Runoff water

;

Urban area

;

Industrial area

;

Time variation

;

Case history

;

Isotope dating

;

Europe

;

Mots-clés français / French Keywords

Suisse

;

Pollution eau

;

Lac

;

Sédiment lacustre

;

Métal lourd

;

Plomb

;

Analyse chimique

;

Teneur

;

Analyse isotopique

;

Inventaire source pollution

;

Facteur anthropique

;

Rejet eau usée

;

Rejet en eau douce

;

Eau ruissellement

;

Zone urbaine

;

Zone industrielle

;

Variation temporelle

;

Historique

;

Datation isotope

;

Lac Léman

;

Europe

;

Mots-clés espagnols / Spanish Keywords

Suiza

;

Contaminación agua

;

Lago

;

Sedimento lacustre

;

Metal pesado

;

Plomo

;

Análisis químico

;

Proporción

;

Análisis isotópico

;

Inventario fuente polución

;

Factor antrópico

;

Desagüe agua residual

;

Desagüe en agua dulce

;

Escorrentía

;

Zona urbana

;

Zona industrial

;

Variación temporal

;

Histórica

;

Datación isotópica

;

Europa

;

Localisation / Location

INIST-CNRS, Cote INIST : 13615, 35400008997398.0050

Nº notice refdoc (ud4) : 1943833



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