Facile preparation of a high-capacity boronate-affinity adsorbent based on low-cost commercial supports for selective enrichment of cis-diol-containing biomolecules

Boronate-affinity adsorbents have been regarded as favorable extraction adsorbents for the pretreatment of cis -diol-containing biomolecules owning to their specific selectivity, but most of them have low adsorption capacity and a tedious synthesis methods. In this study, a new boronate-affinity material (PGMA@FPBA) with high adsorption capacity was synthesized via a “one-pot” method based on a low-cost commercial support. The PGMA@FPBA was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and nitrogen adsorption/desorption measurements. The as-prepared adsorbent showed good selectivity, high adsorption capacity (448 μmol/g for catechol), and fast adsorption equilibration (1 min) for cis -diol-containing biomolecules. Subsequently, as an example for application, the obtained PGMA@FPBA was used as a dispersive solid-phase extraction (d-SPE) adsorbent for enrichment of quercetin in red wine. The results indicated that the facile-prepared boronate-affinity adsorbent has great potential application for separation and enrichment of cis -diol-containing biomolecules in complex samples.