An organically modified silica aerogel for online in-tube solid-phase microextraction.

An organically modified silica aerogel for online in-tube solid-phase microextraction.

Journal of chromatography. A (2017-08-28)

Yanan Bu, Juanjuan Feng, Yu Tian, Xiuqin Wang, Min Sun, Chuannan Luo

摘要

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

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