黄曲霉毒素
分子印迹聚合物
化学
聚合物
固相萃取
分子印迹
介孔二氧化硅
色谱法
吸附
介孔材料
傅里叶变换红外光谱
检出限
核化学
分析化学(期刊)
化学工程
选择性
食品科学
有机化学
工程类
催化作用
作者
Chaofan Rui,Juan He,Yuanyuan Li,Yutao Liang,Liqin You,Lijun He,Kai Li,Shusheng Zhang
出处
期刊:Talanta
[Elsevier]
日期:2019-04-15
卷期号:201: 342-349
被引量:71
标识
DOI:10.1016/j.talanta.2019.04.019
摘要
In this work, a highly selective surface molecular imprinted polymers ([email protected]) were prepared using structural analogues of aflatoxins as the template molecule and mesoporous silica FDU-12 as the carrier. The resulting polymers were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and attenuated total reflection Fourier transform infrared spectrometer. A highly ordered mesoporous nanostructure was observed in the fabricated polymer. Results showed that the adsorption capacity of [email protected] for aflatoxins were higher than that of non-imprinted mesoporous silica polymer ([email protected]). [email protected] were successfully used as a solid-phase extraction sorbent coupled with HPLC for aflatoxin G2, G1, B2 and B1 determination in food samples. Under optimized conditions, recoveries from the spiked cereals were found to be 82.6%–116.7%, with relative standard deviations ranging from 2.73 to 4.21. The detection limits of aflatoxin G2, G1, B2 and B1 were estimated to be 0.05 μg kg−1, 0.06 μg kg−1, 0.06 μg kg−1 and 0.05 μg kg−1, respectively. Limits of quantifications were estimated to be 0.15 μg kg−1, 0.2 μg kg−1, 0.2 μg kg−1and 0.15 μg kg−1, respectively. The developed method exhibited a favorable linear response toward aflatoxin G2, G1, B2 and B1 in the range of 0.1 μg kg−1-50 μg kg−1, R2 is 0.9992–0.9996. These results indicated that [email protected] could be used as an efficient adsorbent of solid phase extraction for enrichment of aflatoxins in real samples.
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