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Updated: Aug 9, 2025

Analysis of Fatty Acid Content and Composition in Microalgae
Published on: October 1, 2013
Solid-phase microextraction with MIL-53(Al)-polymer monolithic column coupled to pressurized capillary
Tingfan Tang1, Xiaohui Li1, Jiaqing Zhu1
1Guangxi Key Laboratory of Green Processing of Sugar Resources, School of Medicine, College of Biological and Chemical Engineering, Guangxi Zhuang Autonomous Region, Guangxi University of Science and Technology, No.257 Liushi Road, Yufeng District, Liuzhou, 545006, Guangxi, People's Republic of China.
Abstract:
In this paper, a polymer monolithic column based on poly (Butyl methacrylate-co-ethylene glycol dimethacrylate) (poly (BMA-co-EDGMA)) doped with MIL-53(Al) metal-organic framework (MOF) was prepared using an in situ polymerization method. The characteristics of MIL-53(Al)-polymer monolithic column were studied through scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FT-IR), energy-dispersive spectroscopy (EDS), X-ray powder diffractometry (XRD), and nitrogen adsorption experiment. Due to its large surface area, the prepared MIL-53(Al)-polymer monolithic column has good permeability and high extraction efficiency. Using MIL-53(Al)-polymer monolithic column for solid-phase microextraction (SPME), coupled to pressurized capillary electrochromatography (pCEC), a method for the determination of trace chlorogenic acid and ferulic acid in sugarcane was established. Under optimized conditions, chlorogenic acid and ferulic acid have a good linear relationship (r ≥ 0.9965) within the concentration range of 50.0-500 µg/mL, the detection limit is 0.017 µg/mL, and the relative standard deviation (RSD) is less than 3.2%. The spike recoveries of chlorogenic acid and ferulic acid were 96.5% and 96.7%, respectively. The results indicate that the method is sensitive, practical, and convenient. It has been successfully applied to the separation and detection of trace organic phenolic compounds in sugarcane samples.
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