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Communication Dans Un Congrès Année : 2012

Development and in situ application of stir bar sorptive extraction as a passive sampling technique for the monitoring of agricultural pesticides in natural waters

Développement et application de l'extraction sur barreau en tant que technique d'échantillonnage passif pour le suivi des concentrations de pesticides agricoles dans les eaux

Résumé

Passive sampling has been developed recently and is a useful sampling technique for the monitoring of aquatic environment. Several passive samplers have shown good performances for the determination of reliable estimates of different classes of micropollutants, with different physicochemical properties. In this study, we used the Stir Bar Sorptive Extraction (SBSE), a lab preparation technique for hydrophobic compounds, directly in river waters for the passive sampling of 16 pesticides (herein named “Passive SBSE”). In this study, we applied the Passive SBSE in two rivers of a small French vineyard watershed for periods of 7 days during two one-month field campaigns, and we determined the average concentrations of the target pesticides during the exposition periods. Results showed that the performances of the Passive SBSE were similar to those of active sampling techniques (grab and average automated samplings). Then ,we assessed the uncertainty of the passive sampling technique and the influence of experimental conditions on the accumulation of the target pesticides.

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Dates et versions

hal-02598179 , version 1 (15-05-2020)

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Citer

A. Assoumani, C. Margoum, C. Guillemain, S. Chataing, Marina Coquery. Development and in situ application of stir bar sorptive extraction as a passive sampling technique for the monitoring of agricultural pesticides in natural waters. 7th European Conference on Pesticides and Related Organic Micropollutants in the Environment - 13th Symposium on Chemistry and Fate of Modern Pesticides, Oct 2012, Porto, Portugal. pp.2. ⟨hal-02598179⟩

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