Paper
Boric-acid-modified Fe3O4@PDA@UiO-66 for enrichment and detection of glucose by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry
Published Sep 10, 2020 · Zhijian Li, Panpan Huo, Congcong Gong
Analytical and Bioanalytical Chemistry
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Abstract
Herein, boric-acid-modified multifunctional Zr-based metal-organic frameworks (denoted as Fe_3O_4@PDA@B-UiO-66) were synthesized by hydrothermal reaction and surface modification. Compared to traditional matrix, Fe_3O_4@PDA@B-UiO-66 has the advantages of high ionization efficiency, high surface area, low matrix background, porous structure, and numerous boric-acid-active sites. By combining matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), Fe_3O_4@PDA@B-UiO-66 was used as an adsorbent and matrix for enrichment and detection of glucose, based on a specific reaction between boric acid and glucose. The limit of detection was 58.5 nM. The proposed method provides a simple and efficient approach for the sensitive and quantitative detection of glucose in complex samples based on MALDI-TOF MS. Design and synthesis of boric-acid-modified multifunctional magnetic metal-organic frameworks (designated as Fe_3O_4@PDA@B-UiO-66) applied as adsorbent and matrix for the matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis of glucose in complex biosamples.
Boric-acid-modified Fe3O4@PDA@B-UiO-66 effectively detects glucose in complex samples using MALDI-TOF MS, providing a simple and efficient method for sensitive and quantitative analysis.
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