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Coiled carbon nanotubes combined with ionic liquid: a new soft material for SPE

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Abstract

For the first time a soft material formed from coiled carbon nanotubes and 1-hexyl-3-methylimidazolium hexafluorophosphate has been used as sorbent material. The soft material has high stability as well as a high capacity to adsorb analytes. In this work we propose using a natural cotton fiber impregnated with the soft material to miniaturize the system. The system was tested for the analysis of polycyclic aromatic hydrocarbons in spiked river water samples. The absolute recovery ranged between 97.5 and 105.5 %, demonstrating the usefulness of the soft material. The limit of detection ranged from 2.5 to 6.1 μg/L and the precision expressed as the relative standard deviation for the analysis of five consecutive analyses ranged between 2.5 and 5.8 %.

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Acknowledgments

The authors wish to thank Spain’s Ministry of Innovation and Science for funding project CTQ2007-60426 and the Junta de Andalucía for funding project FQM02300. M.L.P.-L. also wishes to thank the Ministry of Innovation and Science for the award of a Research Training Fellowship (grant BEST-2008-003535).

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Authors and Affiliations

  1. Department of Analytical Chemistry, University of Córdoba, Campus de Rabanales, 14071, Córdoba, Spain

    M. L. Polo-Luque, B. M. Simonet & M. Valcárcel

  2. Department of Analytical Chemistry, University of Cordoba, Marie Curie Building (Annex), Campus de Rabanales, 14014, Cordoba, Spain

    M. Valcárcel

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  1. M. L. Polo-Luque
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  2. B. M. Simonet
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  3. M. Valcárcel
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Correspondence to M. Valcárcel.

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Polo-Luque, M.L., Simonet, B.M. & Valcárcel, M. Coiled carbon nanotubes combined with ionic liquid: a new soft material for SPE. Anal Bioanal Chem 404, 903–907 (2012). https://doi.org/10.1007/s00216-012-6156-7

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  • DOI: https://doi.org/10.1007/s00216-012-6156-7

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