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Separation/Analysis Safranine T in Food Samples Using Surfactant/Ionic Liquid Aqueous Two-Phase Systems

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Abstract

Sodium dodecyl sulfate (SDS)/room temperature ionic liquids (RTILs) 1-hexyl-3-methylimidazolium bromide aqueous two-phase systems (ATPSs) are presented as separation/enrichment coupled with ultraviolet spectrometry for separation/analysis safranine T in food samples. The main factors affecting the ATPSs, such as amount of SDS, RTILs, pH, and time, have been investigated in detail. Under the optimal conditions, the linear calibration curves for safranine T was obtained over the concentration ranges of 0.05–4.0 μg mL−1 with the correlation coefficient (R) 0.9984 and the detection limits of safranine T was 3.8 ng mL−1. The mechanism of ATPS phase separation for safranine T has been discussed. The method was successfully applied to the determination of safranine T in food 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.

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Correspondence to Xiashi Zhu.

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The National Natural Science Foundation of China (21375117) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Prof. Xiashi Zhu has a financial relationship with the organizations that sponsored the research: She 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. Songqing Chen, PhD student, declares that he has no conflict of interest. Hao Fu, Master’s student, declares that he has no conflict of interest.

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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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Zhu, X., Chen, S. & Fu, H. Separation/Analysis Safranine T in Food Samples Using Surfactant/Ionic Liquid Aqueous Two-Phase Systems. Food Anal. Methods 10, 2764–2771 (2017). https://doi.org/10.1007/s12161-017-0844-z

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