Quantitative detection of carbon nanotubes in biological samples by an original method based on microwave permittivity measurements - Archive ouverte HAL
Article Dans Une Revue Carbon Année : 2015

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

Résumé

Due to their nanoscale, morphology, and chemical composition, the tracking and thequantitative analysis of carbon nanotubes (CNTs) in biological samples still represent hugechallenges. A new technique for the quantitative and accurate detection of CNTs in variousbiological samples at different scales (whole organisms to organs) was developed usingamphibian larvae exposed to double-walled CNTs (DWCNTs). This technique is based onthe dielectric relaxation of ultra-low volume suspensions under a microwave electromagneticfield. CNT concentrations were consequently extracted from complex permittivitymeasurements at 5 GHz, making possible to quantitatively assess the animal exposure toCNTs. Our results indicate a detection threshold of 0.02 lg of DWCNTs, which is the lowestachieved in the literature to date

Domaines

Matériaux
Fichier principal
Vignette du fichier
bourdiol_16583.pdf (1002.64 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01448319 , version 1 (27-01-2017)

Identifiants

Citer

Floriane Bourdiol, David Dubuc, Katia Grenier, Florence Mouchet, Laury Gauthier, et al.. Quantitative detection of carbon nanotubes in biological samples by an original method based on microwave permittivity measurements. Carbon, 2015, 81, pp. 535-545. ⟨10.1016/j.carbon.2014.09.086⟩. ⟨hal-01448319⟩
177 Consultations
296 Téléchargements

Altmetric

Partager

More