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Impact du prélèvement sur la qualité des données de la surveillance

Abstract : A collaborative sampling trial was performed by AQUAREF (French national reference laboratory for water and the aquatic environment) at Paladru Lake, Isere, France. This trial was the first national test aiming at improving knowledge of the effect, in lake water, of sampling on global variability. Ten sampling teams regularly involved in Water Framework Directive monitoring of lake water were asked to participate, in agreement with the Regional Water Agencies. All the samples were collected and analyzed by INERIS in order to minimize the analytical impact on global variability. Overall results for a few metals (cobalt and nickel) showed predominance (>90%) of sampling uncertainty compared to analytical variability. For other metals (zinc, lead and aluminium), the initial blank tests showed possible contamination of sampling systems, and really pointed to the importance of blank sampling. Finally, this trial highlighted the need for general guidelines for sampling that could minimize the risk of misclassification of lake-water status.
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  • HAL Id : ineris-01869461, version 1



Bénédicte Lepot, Fabrizio Botta. Impact du prélèvement sur la qualité des données de la surveillance. Rapport Scientifique INERIS, 2013, 2012-2013, pp.48-49. ⟨ineris-01869461⟩



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