Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 89-95 |
| Number of pages | 7 |
| Journal | Journal of Applied Spectroscopy |
| Volume | 86 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 15 Mar 2019 |
User-Defined Keywords
- enrichment and analysis
- Fe O /ZIF-8 magnetic nanocomposites
- matrix-assisted laser desorption/ionization time-of-flight mass spectrometry
- nitropolycyclic aromatic hydrocarbons
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