Extraction of parabens by melamine sponge with determination by high-performance liquid chromatography |
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| Authors: | Jingkang Li Yanxiao Jiang Ying Sun Xinghua Wang Pinyi Ma Daqian Song Qiang Fei |
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| Institution: | 1. Department of Analytical Chemistry, College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Changchun, P. R. China;2. School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, P. R. China |
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| Abstract: | In the present study, we propose a novel method for the extraction of parabens in personal care products. A new, simple adsorptive material was obtained by combining metal-organic frameworks and melamine sponges using the adhesive property of polyvinylidene fluoride. This new material, metal-organic frameworks/melamine sponges, was found to be particularly suitable for solid-phase extraction. The structural characteristics of metal-organic frameworks/melamine sponges were first analyzed by scanning electron microscopy. Subsequently, solid-phase extraction was performed on sample solutions, and the extracted substances were then analyzed by high-performance liquid chromatography. Following optimization of important experimental conditions, excellent recovery rates were obtained. Our novel method was then applied to the extraction of four parabens (methylparahydroxybenzoates, ethylparahydroxybenzoates, propylparahydroxybenzoates, and butylparahydroxybenzoates) from real samples. The results yielded limits of detection of 0.26–0.41 ng/mL. The inter- and intra-day recoveries were 104.0–109.7% and 91.2–98.1%, respectively (relative standard deviation, <13.8%). |
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| Keywords: | melamine sponges metal-organic frameworks parabens personal care products solid-phase extraction |
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