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Ionic-Liquid-Loaded β-Cyclodextrin-Cross-Linked Polymer Solid-Phase Extraction for the Separation/Analysis of Linuron in Fruit and Vegetable Samples

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Abstract

A novel method for the separation/analysis of linuron in fruit and vegetable samples is described. The work is based on the utilization of ionic liquid ([C6min][PF6])-loaded β-cyclodextrin cross-linked polymer (IL-β-CDCP) for the effective adsorption of linuron coupled with ultraviolet spectrophotometry. The inclusion interaction of IL-β-CDCP with linuron is studied with FTIR and inclusion constants. Under optimum conditions, the preconcentration factor achieved for this method is approximately 10. Linear range, limit of detection (LOD), limit of quantification (LOQ), and relative standard deviation are 0.08–15.00 μg/mL, 5.8 ng/mL, 17.5 ng/mL and 0.96 % (n = 3, c = 4.0 μg/mL), respectively. This technique is successfully applied for determination of linuron in real samples.

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Acknowledgments

The authors acknowledge the financial support from the National Natural Science Foundation of China (21375117, 21155001) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions and the Laboratory Open Fund of Environmental Engineering and environmental Materials Jiangsu Province.

Conflict of Interest

The authors have a financial relationship with the organizations that sponsored the research as follows: Prof. Xiashi Zhu has received research grants from the National Natural Foundation of China (21375117) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions; Gang Feng declares that he has no conflict of interest; and Wenhui Ping, Xingxiu Qin, and Jie Liu are currently master’s degree students in Yangzhou University. They declare that they have no conflict of interest. The research proposed in this article does not contain any studies with human or animals subjects. There are no ethical issues with human or animal subjects in our studies.

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Correspondence to Xiashi Zhu.

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Feng, G., Ping, W., Qin, X.X. et al. Ionic-Liquid-Loaded β-Cyclodextrin-Cross-Linked Polymer Solid-Phase Extraction for the Separation/Analysis of Linuron in Fruit and Vegetable Samples. Food Anal. Methods 8, 2315–2320 (2015). https://doi.org/10.1007/s12161-015-0118-6

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  • DOI: https://doi.org/10.1007/s12161-015-0118-6

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