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Quantitative detection of carbon nanotubes in biological samples by an original method based on microwave permittivity measurements

Bourdiol, Floriane and Dubuc, David and Grenier, Katia and Mouchet, Florence and Gauthier, Laury and Flahaut, Emmanuel Quantitative detection of carbon nanotubes in biological samples by an original method based on microwave permittivity measurements. (2015) Carbon, 81. 535-545. ISSN 0008-6223

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Official URL: http://dx.doi.org/10.1016/j.carbon.2014.09.086

Abstract

Due to their nanoscale, morphology, and chemical composition, the tracking and the quantitative analysis of carbon nanotubes (CNTs) in biological samples still represent huge challenges. A new technique for the quantitative and accurate detection of CNTs in various biological samples at different scales (whole organisms to organs) was developed using amphibian larvae exposed to double-walled CNTs (DWCNTs). This technique is based on the dielectric relaxation of ultra-low volume suspensions under a microwave electromagnetic field. CNT concentrations were consequently extracted from complex permittivity measurements at 5 GHz, making possible to quantitatively assess the animal exposure to CNTs. Our results indicate a detection threshold of 0.02 lg of DWCNTs, which is the lowest achieved in the literature to date

Item Type:Article
Additional Information:hanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at http://www.sciencedirect.com/science/article/pii/S0008622314009518
HAL Id:hal-01448319
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:27 Jan 2017 16:27

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