Abstract
The ionic liquid-immobilized expanded perlite (IL-EP) as a novel solid phase extraction adsorbent coupled with fluorescence spectroscopy for the separation/analysis of bisphenol A (BPA) was established. The results showed that BPA was rapidly adsorbed on IL-EP and separated/recycled from aqueous solution without centrifugation. It was worth mentioning that methanol as eluent could give a significant enhancement to the fluorescence of BPA. Moreover, the pseudo-second-order model fitted the adsorption kinetics data well, which indicated that chemisorption controlled the adsorption of BPA on IL-EP. The linear calibration curve for BPA was obtained over the concentration ranges of 0.01–10.0 μg mL−1 with the detection limits (LOD) of 0.3 ng mL−1. This method was applied to determinate BPA in food packaging material with reasonable results.
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Conflict of Interest
The authors have a financial relationship with the organizations that sponsored the research. 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. Jie Liu is currently a Masters student and declares that she has no conflict of interest.
Ethical Standards—Animal Rights and Informed Consent
The research proposed in this article does not contain any studies with human or animal subjects. There are no ethical issues with human or animal subjects in our studies.
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Liu, J., Zhu, X. Ionic Liquid-Immobilized Expanded Perlite Solid-Phase Extraction for Separation/Analysis of Bisphenol A in Food Packaging Material. Food Anal. Methods 9, 605–613 (2016). https://doi.org/10.1007/s12161-015-0222-7
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DOI: https://doi.org/10.1007/s12161-015-0222-7