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Fe3O4@ionic liquid-β-cyclodextrin polymer magnetic solid phase extraction coupled with HPLC for the separation/analysis of congo red

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Abstract

Fe3O4@ionic liquids β-cyclodextrin polymer(Fe3O4@mono-6-deoxy-6-(1-ethyl-imidazolium)-β-cyclodextrin iodide polymer, Fe3O4@ILs-β-CDCP) was prepared. Magnetic solid phase extraction coupled with high-performance liquid chromatography for the separation/analysis of congo red (CR) in water and drysaltery was established. Fe3O4@ILs-β-CDCP showed a higher adsorption capacity toward CR. CR was adsorbed rapidly by Fe3O4@ILs-β-CDCP (adsorption efficiency: 95%) and eluted by ethanol (elution efficiency: 96%) at room temperature. Under the optimal conditions, preconcentration factor of the proposed method was 20-fold. The linear range, correlation coefficient (R 2), detection limit (DL) and relative standard deviation were found to be 0.005–100.00 µg mL−1, 0.9910, 1.8 g L−1 and 0.61% (n = 3, c = 5.00 µg mL−1), respectively. The adsorption mechanism of CR on Fe3O4@ILs-β-CDCP was studied through the FTIR analysis. The accuracy of the developed method was confirmed by spiking city water, lake water, pond water and drysaltery. Fe3O4@ILs-β-CDCP can be used repeatedly for 10 times. This proposed method had been successfully applied to the determination of CR in real samples.

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Acknowledgements

The authors acknowledge the financial support from the National Natural Science Foundation of China (21375117) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, and the Foundation of the Excellence Science and Technology Invention Team in Yangzhou University.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, Jiangsu, People’s Republic of China

    Xingxiu Qin, Almojtaba AbdAlkhalig Ahmed Bakheet & Xiashi Zhu

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  1. Xingxiu Qin
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  2. Almojtaba AbdAlkhalig Ahmed Bakheet
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  3. Xiashi Zhu
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Correspondence to Xiashi Zhu.

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Qin, X., Bakheet, A.A.A. & Zhu, X. Fe3O4@ionic liquid-β-cyclodextrin polymer magnetic solid phase extraction coupled with HPLC for the separation/analysis of congo red. J IRAN CHEM SOC 14, 2017–2022 (2017). https://doi.org/10.1007/s13738-017-1139-4

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  • DOI: https://doi.org/10.1007/s13738-017-1139-4

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