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Simultaneous Analysis of Sugars and Polyphenols in Tobacco by CZE with Amperometric Detection Based on a Cu2O/MWCNT-COOH Composite Electrode

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Abstract

A composite electrode was fabricated from Cu2O powder, carboxyl-functionalized multi-wall carbon nanotubes (MWCNT-COOH), and paraffin oil in the proportions 51:17:32 (w/w). This composite electrode was used for amperometric detection (CZE–AD) in simultaneous capillary zone electrophoretic analysis of chlorogenic acid, rutin, sucrose, glucose, mannose, and fructose in tobacco samples. Under the optimum conditions, the six analytes could be separated in 100 mmol L−1 NaOH buffer within 30 min. Good linearity was achieved in the range 1 × 10−7–1 × 10−4 mol L−1 for the two polyphenols and 5 × 10−6–1 × 10−3 mol L−1 for the four sugars. The detection limits (S/N = 3) for the polyphenols and sugars were as low as 10−8 mol L−1 and 10−6 mol L−1, respectively.

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Acknowledgements

This work was financially supported by Program for New Century Excellent Talents in Universities.

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Authors and Affiliations

  1. Department of Chemistry, East China Normal University, North Zhongshan Road, 200062, Shanghai, People’s Republic of China

    Zhiyong Yang, Linlin Zhang, Gang Li, Qingjiang Wang, Pingang He & Yuzhi Fang

  2. School of Pharmacy, Dali University, Dali, 671000, Yunnan, People’s Republic of China

    Zhiyong Yang

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  1. Zhiyong Yang
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  2. Linlin Zhang
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  3. Gang Li
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  4. Qingjiang Wang
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  5. Pingang He
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Correspondence to Pingang He or Yuzhi Fang.

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Yang, Z., Zhang, L., Li, G. et al. Simultaneous Analysis of Sugars and Polyphenols in Tobacco by CZE with Amperometric Detection Based on a Cu2O/MWCNT-COOH Composite Electrode. Chroma 71, 439–445 (2010). https://doi.org/10.1365/s10337-009-1459-3

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