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Conference papers

Is the toxicity of pesticide mixtures on river biofilm accounted for solely by the major compounds identified?

Abstract : Pesticides are present as a cocktail of compounds at low concentrations in water bodies. Nevertheless, studies assessing the toxic effects of pesticide mixtures at realistic environmental concentrations are still scarce. Polar Organic Chemical Integrative Sampler (POCIS) allows the concentration of several organic chemicals from large volumes of natural water [1]. This high pre-concentration of compounds makes POCIS a powerful tool to assess extract toxicity via biological testing and therefore to study the impact of realistic mixtures . PE can be used as a black box with the advantages of dealing with mixtures “as they came”; this approach gives an estimation of an integrative measure of the toxic potential of a group of compounds including unknown toxicants without using an a priori approach. With this protocol, the global toxicity of the extract is assessed although the compounds responsible for the observed toxicity are not identified. The present study aimed to characterize the effects of long-term and low-dose exposure to POCIS extracts in a context of contamination by cereal crops on a natural biofilm community and to evaluate whether the effects observed due to exposure to PE were explained by the major compounds identified in the extracts [2].
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Submitted on : Saturday, May 16, 2020 - 8:41:47 AM
Last modification on : Wednesday, November 17, 2021 - 12:32:12 PM


  • HAL Id : hal-02603451, version 1
  • IRSTEA : PUB00048220



S. Kim Tiam, Soizic Morin, B. Bonet, H. Guasch, A. Feurtet Mazel, et al.. Is the toxicity of pesticide mixtures on river biofilm accounted for solely by the major compounds identified?. 25th SETAC Europe Annual Meeting, May 2015, Barcelona, Spain. pp.2. ⟨hal-02603451⟩



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