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Surface area of carbon-based nanoparticles prevails on dispersion for growth inhibition in amphibians

Lagier, Laura and Mouchet, Florence and Laplanche, Christophe and Mottier, Antoine and Cadarsi, Stéphanie and Evariste, Lauris and Sarrieu, Cyril and Lonchambon, Pierre and Pinelli, Eric and Flahaut, Emmanuel and Gauthier, Laury Surface area of carbon-based nanoparticles prevails on dispersion for growth inhibition in amphibians. (2017) Carbon, 119. 72-81. ISSN 0008-6223

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Official URL: http://dx.doi.org/10.1016/j.carbon.2017.04.016

Abstract

The attractive properties of carbon-based nanoparticles such as graphene and its derivatives or carbon nanotubes lead to their use in many application fields, whether they are raw or functionalized, such as oxidized. These particles may finally contaminate the aquatic compartment, which is a major receptacle of pollutants. The study of their impact on aquatic organisms is thus essential. At the nano scale, recent studies have highlighted that specific surface area should be used as the most relevant descriptor of toxicity instead of the conventional mass concentration. By using a dose-response model, this work compares the chronic toxicity observed on Xenopus laevis larvae after 12-day in vivo exposure to raw, oxidized carbon allotropes, or in the presence of chemical dispersant. We show that chemical dispersion does not influence the observed chronic toxicity, whether it is through surface chemistry (oxidation state) or through the addition of a dispersant. The biological hypothesis leading to growth inhibition are discussed. Finally, these results confirm that surface area is the more suited metric unit describing growth inhibition.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at http://www.sciencedirect.com/science/article/pii/S000862231730372X
HAL Id:hal-01578367
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:06 Jul 2017 14:13

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