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采用分子烙印聚合物选择性固相萃取饲料、食用鸡肉和猪肉中的四种苯胂酸化合物。

Selective solid-phase extraction of four phenylarsonic compounds from feeds, edible chicken and pork with tailoring imprinted polymer.

机构信息

Henan Engineering Research Center of Food Material/National Demonstration Center for Experimental Food Processing and Safety Education, College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China.

Henan Engineering Research Center of Food Material/National Demonstration Center for Experimental Food Processing and Safety Education, College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China.

出版信息

Food Chem. 2021 Jun 15;347:129054. doi: 10.1016/j.foodchem.2021.129054. Epub 2021 Jan 12.

Abstract

The novel molecularly imprinted microspheres for four phenylarsonic compounds have been firstly prepared with the reversible addition-fragmentation chain transfer polymerization in a suspension system. The resulting polymeric microspheres were characterized by infrared spectrum, scanning electron microscope and differential scanning calorimetry. With serial adsorption experiments, the polymeric microspheres showed highly specific molecular recognition, fast mass transfer rate and robust adsorption of the substrates. Then, the imprinted polymer was used as the solid-phase extraction adsorbent to extract the phenylarsonic compounds from the feeds, edible chicken and pork. The cartridge was washed with 2 mL ethyl acetate and eluted with 3 mL of methanol- acetic acid (90:10, v/v). The recoveries of the molecularly imprinted solid-phase extraction (MISPE) column ranged from 83.4% to 95.1%. This work provided a versatile approach for the specific extraction of the organoarsenic compounds from complicated matrices and exhibited a bright future for the application of MISPE column.

摘要

新型四苯胂酸分子印迹微球首先通过可逆加成-断裂链转移聚合在悬浮体系中制备。所得聚合物微球通过红外光谱、扫描电子显微镜和差示扫描量热法进行了表征。通过一系列吸附实验,聚合物微球表现出对基质高度的特异性分子识别、快速的传质速率和强大的吸附能力。然后,将印迹聚合物用作固相萃取吸附剂,从饲料、食用鸡肉和猪肉中提取苯胂酸化合物。用 2mL 乙酸乙酯洗涤,用 3mL 甲醇-乙酸(90:10,v/v)洗脱。分子印迹固相萃取(MISPE)柱的回收率在 83.4%至 95.1%之间。这项工作为从复杂基质中特异性提取有机胂化合物提供了一种通用方法,并为 MISPE 柱的应用展示了广阔的前景。

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