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Tris(2,2′-bipyridyl)ruthenium(II) electrochemiluminescent determination of ethyl formate

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Abstract

Ethyl formate is extensively used as food flavor, fungicide, and larvicide. It naturally exists in coffee, fruits, honey, brandy, and rum as well as dust clouds in an interstellar space of the Milky Way galaxy. Herein, its electrochemiluminescence (ECL) property has been firstly investigated. It shows intense ECL in reaction with Ru(bpy)32+ as luminophore, and thus a rapid and sensitive detection method for ethyl formate is proposed. Effects of pH, working potential, scan rate, and concentration of Ru(bpy)32+ were studied. ECL spectrum analysis was used to reveal the reaction mechanism. At the optimized experimental conditions, a linear relationship between ECL intensities and concentrations of ethyl formate is observed from 3.0 μM to 1.0 mM (R2 = 0.997). The limit of detection for ethyl formate is 0.7 μM (S/N = 3). The relative standard deviation with 1.0 mM concentration of ethyl formate for nine analyses is 2.7%. A 101.20–102.10% recovery was obtained in a real samples analysis.

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Acknowledgements

This work was kindly sponsored by the National Natural Science Foundation of China [Nos.21505128 & 21675148], Ministry of Science and technology of the People’s Republic of China [No. 2016YFA0201300], the Chinese Academy of Sciences (CAS)-the Academy of Sciences for the Developing World (TWAS) President’s Fellowship Programme, and the Chinese Academy of Sciences (CAS) President’s International Fellowship Initiative (PIFI).

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Authors and Affiliations

  1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, Jilin, China

    Tadesse Haile Fereja, Shimeles Addisu Kitte, Dmytro Snizhko, Liming Qi, Anaclet Nsabimana, Zhongyuan Liu & Guobao Xu

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Tadesse Haile Fereja, Shimeles Addisu Kitte, Liming Qi, Anaclet Nsabimana, Zhongyuan Liu & Guobao Xu

  3. College of Medicine and Health Sciences, Department of Pharmacy, Ambo University, P.O. Box 19, Ambo, Ethiopia

    Tadesse Haile Fereja

  4. Laboratory of Analytical Optochemotronics, Kharkiv National University of Radio Electronics, 14 Nauki Ave, Kharkiv, 61166, Ukraine

    Dmytro Snizhko

  5. University of Science and Technology of China, No.96, JinZhai Road Baohe District, Hefei, 230026, Anhui, China

    Guobao Xu

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  1. Tadesse Haile Fereja
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Correspondence to Zhongyuan Liu or Guobao Xu.

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Published in the topical collection New Insights into Analytical Science in China with guest editors Lihua Zhang, Hua Cui, and Qiankun Zhuang.

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Fereja, T.H., Kitte, S.A., Snizhko, D. et al. Tris(2,2′-bipyridyl)ruthenium(II) electrochemiluminescent determination of ethyl formate. Anal Bioanal Chem 410, 6779–6785 (2018). https://doi.org/10.1007/s00216-018-1275-4

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