Integrative Medicine Cluster, Advanced Medical & Dental Institute, Universiti Sains Malaysia, Pulau Pinang 13200, Malaysia.
Integrative Medicine Cluster, Advanced Medical & Dental Institute, Universiti Sains Malaysia, Pulau Pinang 13200, Malaysia.
Food Chem. 2019 Apr 25;278:322-332. doi: 10.1016/j.foodchem.2018.10.145. Epub 2018 Nov 3.
Poly(β-cyclodextrin functionalized ionic liquid) immobilized magnetic nanoparticles (FeOβCD-Vinyl-TDI) as sorbent in magnetic µ-SPE was developed for the determination of selected polycyclic aromatic hydrocarbons (PAHs) in rice samples coupled with gas chromatographic-flame ionization detector (GC-FID). The nanocomposite was characterized by various tools and significant parameters that affected the extraction efficiency of PAHs were investigated. The calibration curves were linear for the concentration ranging between 0.1 and 500 μg kg with correlation determinations (R) from 0.9970 to 0.9982 for all analytes. Detection limits ranged at 0.01-0.18 μg kg in real matrix. The RSD values ranged at 2.95%-5.34% (intra-day) and 4.37%-7.05% (inter-day) precision for six varied days. The sorbents showed satisfactory reproducibility in 2.9% to 9.9% range and acceptable recovery values at 80.4%-112.4% were obtained for the real sample analysis. The optimized method was successfully applied to access content safety of selected PAHs for 24 kinds of commercial rice available in Malaysia.
聚（β-环糊精功能化离子液体）固载磁性纳米粒子（FeOβCD-Vinyl-TDI）作为吸附剂在磁固相萃取（µ-SPE）中，与气相色谱-火焰离子化检测器（GC-FID）联用，用于测定大米样品中选定的多环芳烃（PAHs）。采用多种工具对纳米复合材料进行了表征，并研究了影响 PAHs 萃取效率的重要参数。对于所有分析物，校准曲线在 0.1 至 500μgkg 浓度范围内呈线性，相关系数（R）为 0.9970 至 0.9982。在实际基质中，检测限范围为 0.01-0.18μgkg。对于六天的不同时间，精密度的 RSD 值在 2.95%-5.34%（日内）和 4.37%-7.05%（日间）之间。该吸附剂在 2.9%-9.9%的范围内具有良好的重现性，对于实际样品分析，回收率在 80.4%-112.4%之间，结果令人满意。该优化方法成功应用于测定马来西亚 24 种市售大米中选定 PAHs 的含量安全性。
