Faculty of Life Science and Technology, Kunming University of Science and Technology, Yunnan Province 650500, China.
Technology Centre, China Tobacco Guangxi Industrial Co., Ltd, Nanning, China.
Food Chem. 2017 Dec 15;237:870-876. doi: 10.1016/j.foodchem.2017.06.063. Epub 2017 Jun 9.
A magnesium-aluminum layered double hydroxides coated on magnetic nanoparticles (FeO@MgAl-LDHs NPs) combined with the supramolecular solvents (SUPRASs) as the magnetic supramolecular fluids were successfully applied to the extraction and determination of four phenolic compounds (Bisphenol-A (BPA), bisphenol-AF (BPAF), tetrabromobisphenol-A (TBBPA) and 4-tert-octylphenol (4-TOP)). Magnetic supramolecular fluids (ferrofluids) composites were prepared through adding the mixture of n-octanol and tetrahydrofuran in distilled water as the supramolecular solvents into the solution containing magnetic FeO@MgAl-LDHs NPs. Under the optimized conditions, the calibration curve was obtained in range of 5-1000μgL. The limits of detection (S/N=3) for BPA, BPAF, TBBPA and 4-TOP, were obtained for 0.54, 0.48, 0.37 and 0.63μgL, respectively. The intra-day and inter-day precision (RSDs %) for bisphenols (BPs) and 4-TOP at 100 and 300μgL were in the range of 4.0-7.8. The enrichment factors were between 16 and 24.
一种镁铝层状双氢氧化物包覆在磁性纳米粒子（FeO@MgAl-LDHs NPs）上，并与超分子溶剂（SUPRASs）结合形成磁性超分子流体，成功应用于四种酚类化合物（双酚 A（BPA）、双酚 AF（BPAF）、四溴双酚 A（TBBPA）和 4-叔辛基苯酚（4-TOP））的萃取和测定。磁性超分子流体（磁流体）复合材料是通过将正辛醇和四氢呋喃的混合物加入到含有磁性 FeO@MgAl-LDHs NPs 的溶液中，在蒸馏水中作为超分子溶剂来制备的。在优化条件下，在 5-1000μgL 范围内得到了校准曲线。BPA、BPAF、TBBPA 和 4-TOP 的检测限（S/N=3）分别为 0.54、0.48、0.37 和 0.63μgL。在 100 和 300μgL 时，双酚类化合物（BPs）和 4-TOP 的日内和日间精密度（RSDs%）分别在 4.0-7.8 之间。富集因子在 16 到 24 之间。
