Abstract
Graphene aerogel monolith was synthesized directly in the solid-phase extraction cartridge through template-free “sol-cryo” method and used for the separation of pyrethroids insecticides from water samples, followed by gas chromatography–mass spectrometry analysis. Graphene sheets, the basic components of graphene aerogel, extracted the analytes from water samples through π–π stacking interaction and hydrophobic interaction. Then the targets were desorbed in ethyl acetate for subsequent analysis. Several parameters such as adsorption property, the type of the elution solvent and elution volume, the loading volume and its pH were investigated to achieve the best solid-phase extraction performance. Low limits of detection in the range of 0.83–9.31 ng L−1 and acceptable precision (RSDs 3.8–11.7%) were achieved under the optimized conditions. The developed method was applied to extract pyrethroids from real water samples with satisfactory recoveries between 76.2 and 106.0%. The present work extends the application of graphene related materials in separation science.
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This work was supported by the Natural Science Foundation of China (Nos. 21575076 and 21621003), the National Key Research and Development Program of China (2016YFA0203101), the Beijing Municipality Science and Technology Program (D161100002116001) and the State Key Laboratory of NBC Protection for Civilian (SKLNBC2012-08).
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Yang, L., Han, Q., Sun, S. et al. Evaluation of Graphene Aerogel Monolith-Based Solid-Phase Extraction for the Separation of Pyrethroids from Water Samples. Chromatographia 80, 1781–1787 (2017). https://doi.org/10.1007/s10337-017-3415-y
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DOI: https://doi.org/10.1007/s10337-017-3415-y