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Sensitive electrochemical sensor for the determination of pentachlorophenol in fish meat based on ZnSe quantum dots decorated multiwall carbon nanotubes nanocomposite

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Abstract

In this work, a very sensitive electrochemical sensor for the determination of pentachlorophenol (PCP) was constructed based on the electrocatalytic activity of the composite of ZnSe quantum dots (ZnSe QDs) decorated multiwall carbon nanotubes (MWCNTs) (ZnSe QDs-MWCNTs). The behaviors of PCP on the surface of ZnSe QDs-MWCNT modified electrode showed that the composite of ZnSe QDs-MWCNTs introduced a favorable access for the electron transfer and make an obvious electrocatalytic activity toward the oxidation of PCP. Differential pulse voltammetry (DPV) was used for the quantitative determination of PCP. Under the optimum conditions, the peak current of PCP was proportional to its concentration at the range of 8.0 × 10−8 to 4.0 × 10−6 mol L−1 with a detection limit 2.0 × 10−9 mol L−1 (S/N = 3). Compared with the reported papers, the proposed method was more sensitive and simple. The developed method was successfully applied for the determination of PCP in fish meat with satisfactory recoveries.

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Acknowledgments

We acknowledge the financial support of the National Natural Science Funds national (U1404214) and Foundation of Henan Educational Committee (14A150014).

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Authors and Affiliations

  1. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, People’s Republic of China

    Suxiang Feng, Ran Yang, Xiaojie Ding, Jianjun Li, Cheng Guo & Lingbo Qu

  2. College of pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou, 450008, People’s Republic of China

    Suxiang Feng

  3. College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, People’s Republic of China

    Lingbo Qu

Authors
  1. Suxiang Feng
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  2. Ran Yang
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  3. Xiaojie Ding
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  4. Jianjun Li
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  5. Cheng Guo
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  6. Lingbo Qu
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Correspondence to Ran Yang or Lingbo Qu.

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Feng, S., Yang, R., Ding, X. et al. Sensitive electrochemical sensor for the determination of pentachlorophenol in fish meat based on ZnSe quantum dots decorated multiwall carbon nanotubes nanocomposite. Ionics 21, 3257–3266 (2015). https://doi.org/10.1007/s11581-015-1512-1

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  • DOI: https://doi.org/10.1007/s11581-015-1512-1

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