Core-shell magnetic metal organic nanocrystals were synthesized and used as matrix for matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Four nitropolycyclic aromatic hydrocarbons (nitro-PAHs) were successfully detected by using negative-ion MALDI-TOF MS without background interference. Furthermore, the magnetic nanocomposites (MNCs) coated with zeolitic imidazolate framework-8 (ZIF-8) showed excellent adsorption and enrichment capacity, and can be isolated with a magnet and directly spotted on the stainless steel plate for MALDI measurement. It was also analyzed nitro-PAHs in PM2.5 samples using the ZIF-8-coated magnetic nanocomposite as adsorbent and matrix.
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Published in Zhurnal Prikladnoi Spektroskopii, Vol. 86, No. 1, pp. 103–109, January–February, 2019.
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Wang, H., Wang, X., Bian, W. et al. Analysis of Nitropolycyclic Aromatic Hydrocarbons in Fine Particulate Matter by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Using Fe3O4/ZIF-8 Magnetic Nanocomposites as Matrix. J Appl Spectrosc 86, 89–95 (2019). https://doi.org/10.1007/s10812-019-00786-5
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DOI: https://doi.org/10.1007/s10812-019-00786-5