Magnetic fiber headspace solid-phase microextraction of Ferulago angulata volatile components using Preyssler-type polyoxometalate/metal-organic framework/silica aerogel sorbent

A new hybrid of silica aerogel with a Preyssler-type polyoxometalate and MIL-101(Cr) metal-organic framework was prepared and used as a highly porous fiber coating for headspace solid-phase microextraction of Ferulago angulata volatile components. Applying a permanent magnetic field to the sorbent increased the extraction efficiency for most of the plant's components, up to 5.53 times. Optimization of the extraction parameters was carried out using a GC-MS instrument and by a simplex method. The extraction efficiency of the P5W30/MIL101(Cr)/silica aerogel fiber exceeded 3.5 times of a mesoporous SBA-15 fiber. The prepared fiber was stable in multiple injections with relative standard deviations of 5.3 to 10.9% for 5 replicates. The proposed method was successfully applied to the extraction and identification of volatile components of some F. angulata samples. According to the results obtained by GC-FID, beta-bourbonene, beta-gurjunene, beta-elemene and cedrenol were the main components of the plant.

Automated summary

A new hybrid fiber coating was prepared for the extraction of volatile components of Ferulago angulata, showing significantly higher extraction efficiency compared to other fibers and good stability. The main volatile components of F. angulata were successfully extracted and identified in the experiment.