Bu Yanan, Feng Juanjuan, Tian Yu, Wang Xiuqin, Sun Min, Luo Chuannan
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
J Chromatogr A. 2017 Sep 29;1517:203-208. doi: 10.1016/j.chroma.2017.07.075. Epub 2017 Jul 24.
Aerogels have received considerable attentions because of its porous, high specific surface, unique properties and environmental friendliness. In this work, an organically modified silica aerogel was functionalized on the basalt fibers (BFs) and filled into a poly(ether ether ketone) (PEEK) tube, which was coupled with high performance liquid chromatography (HPLC) for in-tube solid-phase microextraction (IT-SPME). The aerogel was characterized by scanning electron microscopy (SEM) and fourier transform infrared spectrometry (FT-IR). The extraction efficiency of the tube was systematically investigated and shown enrichment factors from 2346 to 3132. An automated, sensitive and selective method was developed for the determination of five estrogens. The linear range was from 0.03 to 100μgL with correlation coefficients (r) higher than 0.9989, and low detection limits (LODs) were 0.01-0.05μgL. The relative standard deviations (RSDs) for intra-day and inter-day were less than 4.5% and 6.7% (n=6), respectively. Finally, the analysis method was successfully applied to detect estrogens in sewage and emollient water samples.
气凝胶因其多孔性、高比表面积、独特性能和环境友好性而受到广泛关注。在本工作中，一种有机改性的二氧化硅气凝胶在玄武岩纤维（BFs）上进行功能化处理，并填充到聚醚醚酮（PEEK）管中，该管与高效液相色谱（HPLC）联用用于管内固相微萃取（IT-SPME）。通过扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）对气凝胶进行了表征。系统研究了该管的萃取效率，富集因子为从2346到3132。开发了一种自动化、灵敏且选择性好的方法用于测定五种雌激素。线性范围为0.03至100μg/L，相关系数（r）高于0.9989，低检测限（LODs）为0.01 - 0.05μg/L。日内和日间的相对标准偏差（RSDs）分别小于4.5%和6.7%（n = 6）。最后，该分析方法成功应用于检测污水和润肤水样中的雌激素。
