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Separation of metal ions via capillary electrophoresis using a pseudostationary phase microfunctionalized with carbon nanotubes

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Abstract

This study reports on the use of dispersed multi-walled carbon nanotubes (MWCNTs) as a novel pseudostationary phase in capillary electrophoresis for the separation and determination of mono- and divalent metal ions. The use of a background electrolyte containing 1 μg⋅mL−1 of dispersed MWCNTs results in good analytical linearity, in detection limits in the range from 18.5 to 124 ng⋅mL−1, and in limits of quantifications in the range from 61 to 409 ng⋅mL−1. The method was applied to the analysis of the ions K(I), Ba(II), Ca(II), Na(I), Mg(II), Co(II), Ni(II), Zn(II), Li(I) and Cd(II) in spiked honey, and mean recoveries were found to be between 80.0 and 106.7%.

Dispersed carbon nanotubes were used as pseudostationary phase in capillary electrophoresis for the separation and determination of metal ions in honey samples.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (81573552), the Zhejiang Provincial Natural Science Foundation of China (LY15H280016), the Hangzhou social development of scientific research projects (No. 20150533B05), and the New-shoot Talents Program of Zhejiang Province (2016R423072).

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Authors and Affiliations

  1. College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, China

    Li-Qing Peng, Jun Cao, Li-Jing Du, Jing-Jing Xu & Qi-Dong Zhang

  2. Department of Traditional Chinese Medicine, Hangzhou Red Cross Hospital, Hangzhou, 310003, China

    Li-Hong Ye

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  1. Li-Qing Peng
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Correspondence to Jun Cao.

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Peng, LQ., Ye, LH., Cao, J. et al. Separation of metal ions via capillary electrophoresis using a pseudostationary phase microfunctionalized with carbon nanotubes. Microchim Acta 184, 1747–1754 (2017). https://doi.org/10.1007/s00604-017-2172-9

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  • DOI: https://doi.org/10.1007/s00604-017-2172-9

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