Measuring trace element contamination in surface waters using chemical and biological monitoring tools - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Poster De Conférence Année : 2014

Measuring trace element contamination in surface waters using chemical and biological monitoring tools

Évaluation de la contamination des eaux de surface par les éléments traces métalliques par les outils de monitoring chimiques et biologiques

Résumé

The measurement of bioavailable trace element fraction is important for environmental assessment. Passive sampling has been suggested as a chemical alternative to biomonitoring. Diffusive Gradient in Thin films (DGT) samplers allow the determination of the ‘labile’ trace element fraction considered to be more representative of the potentially bioavailable fraction than the dissolved fraction. In this study, DGT passive samplers and transplanted organisms (Gammarus fossarum) were deployed in situ to evaluate the trace element contamination of surface waters in 6 watersheds impacted by different anthropogenic activities (agriculture, mixed urban and industrial, mining). Both techniques led to similar conclusion: the maximum pressure of metal contamination occurred in the mining area. In case of intermediate levels of contamination, results were more complex to interpret due to some limitations of the tools: e.g. mechanisms of Cu internal regulation for tested organisms, labile Cd not representing truly bioavailable Cd. Nevertheless, interpretation of the results for elements such as Zn, Co and Ni led to the same classification in term of environmental pressure of contamination: mining > urban-industrial > vineyard > agricultural. Consequently, this study showed that the tested combination of chemical and biological tools is efficient to assess the pressure of bioavailable trace element contamination at watershed scale.
Fichier non déposé

Dates et versions

hal-02600719 , version 1 (16-05-2020)

Identifiants

Citer

A. Larrose, A. Dabrin, R. Recoura Massaquant, A. Francois, J. Gahou, et al.. Measuring trace element contamination in surface waters using chemical and biological monitoring tools. The 38th International Symposium on Environmental Analytical Chemistry – ISEAC38, Jun 2014, Lausanne, Switzerland. pp.2, 2014. ⟨hal-02600719⟩

Collections

IRSTEA INRAE
7 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More