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Vol. 26 No. 15 (2014): Vol 26 Issue 15

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Optimization of Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Drop of Endocrine Disrupting Compounds in Liquid Food Samples Using Response Surface Plot Method

https://doi.org/10.14233/ajchem.2014.16259
Yu Li
Resources and Environmental Research Academy, North China Electric Power University, Beijing, P.R. China;MOE Key Laboratory of Regional Energy Systems Optimization, North China Electric Power University, P.O. Box 58, Beijing 102206, P.R. China
Chen Zhang
Resources and Environmental Research Academy, North China Electric Power University, Beijing, P.R. China;MOE Key Laboratory of Regional Energy Systems Optimization, North China Electric Power University, P.O. Box 58, Beijing 102206, P.R. China

Corresponding Author(s) : Yu Li

liyuxx8@hotmail.com

Asian Journal of Chemistry, Vol. 26 No. 15 (2014): Vol 26 Issue 15

Abstract

A dispersive liquid-liquid microextraction-solidification of floating organic drop (DLLME-SFO) method was developed for the endocrine disrupting compounds (estrone, estradiol, estriol, bisphenol A, diethylstilbestrol and 4-nonylphenol) extraction in food samples. The samples were analyzed by high-performance liquid chromatography with UV detection. Meanwhile, the conditions of endocrine disrupting compounds extraction were optimized by a response surface plot method. The result indicated that the optimum conditions for endocrine disrupting compounds extraction were: 100 μL dodecanol, 0.6 mL acetonitrile, 5 mL sample and 0.5 g NaCl. The linear range of the method was 0.01-3 mg/L and the limits of detection were 0.41-7.50 μg/L. In addition, spiking experiments were performed in soy milk, cow's milk and drinking water and the relative recoveries of the endocrine disrupting compounds ranged from 71.34-112.97 % with RSDs in the range of 0.11-11.18 %. The experimental results indicated that the method was suitable to apply in food samples.

Keywords

Central composite design Endocrine disrupting compounds Dispersive liquid-liquid extraction Food samples
Li, Y., & Zhang, C. (2014). Optimization of Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Drop of Endocrine Disrupting Compounds in Liquid Food Samples Using Response Surface Plot Method. Asian Journal of Chemistry, 26(15), 4849–4854. https://doi.org/10.14233/ajchem.2014.16259
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