A recently prepared nanoporous G(1)-dendrimer supported Santa Barbara Amorphous-15 (SBA-15) solid phase microextraction (SPME) fiber was successfully applied to the headspace solid-phase microextraction of solvent residues such as hexane, benzene, and toluene in edible vegetable oils followed by gas chromatography flame ionization detection (GC-FID). Experimental conditions such as extraction time and temperature and GC parameters were optimized. Under the optimized conditions, linear calibration curves were obtained in the ranges of 6–300 mg kg⁻¹ for hexane, and 8–250 mg kg⁻¹ for both benzene and toluene. The detection limit was the concentration of the analyte having a signal three times that of the noise and was in the range of 0.90–1.2 mg kg⁻¹ for the three mentioned solvents. The relative standard deviations (RSDs) for hexane, benzene, and toluene under optimum conditions were 9.50, 6.70, and 7.30% for a fiber (repeatability, n = 6) and 12.1, 9.30, and 14.90% between fibers (reproducibility, n = 6), respectively. The method was successfully applied to the extraction and determination of the three solvents in ten different vegetable oils collected from local markets. The results were in good agreement with those obtained using the commercial fibers.

中文翻译：

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树枝状聚合物接枝的纳米多孔二氧化硅纤维，用于顶空固相微萃取-气相色谱法测定食用油中的溶剂残留†

最近准备的纳米多孔G（1）-树状大分子支撑的Santa Barbara Amorphous-15（SBA-15）固相微萃取（SPME）纤维已成功应用于溶剂残留物（如己烷，苯和甲苯）的顶空固相微萃取。食用植物油，然后进行气相色谱火焰电离检测（GC-FID）。优化了实验条件，例如提取时间和温度以及GC参数。在优化条件下，是在6-300毫克公斤的范围内获得的线性校准曲线^-1为己烷，和8-250毫克千克^-1两个苯和甲苯。检出限是信号的分析物浓度，其浓度是噪声的三倍，范围为0.90–1.2 mg kg ^-1对于上述三种溶剂。在最佳条件下，己烷，苯和甲苯的相对标准偏差（RSD）对于纤维（可重复性，n = 6）为9.50％，6.70％和7.30％，纤维之间的相对标准偏差为12.1、9.30和14.90％（可再现性，n = 6）。该方法已成功应用于从当地市场收集的十种不同植物油中的三种溶剂的萃取和测定。结果与使用商业纤维获得的结果非常一致。