Magnetic graphene composites as both an adsorbent for sample enrichment and a MALDI-TOF MS matrix for the detection of nitropolycyclic aromatic hydrocarbons in PM2.5

Analyst. 2015 Mar 7;140(5):1711-6. doi: 10.1039/c4an02225d. Epub 2015 Jan 28.

Abstract

A simple and rapid method that uses synthesized magnetic graphene composites as both an adsorbent for enrichment and as a matrix in MALDI-TOF MS analysis was developed for the detection of nitropolycyclic hydrocarbons (nitro-PAHs) in PM2.5 samples. Three nitro-PAHs were detected down to sub pg μL(-1) levels based on calculations from an instrumental signal-to-noise better than 3, which shows the feasibility of using the new materials in MALDI-TOF MS as a potential powerful analytical approach for the analysis of nitro-PAHs in PM2.5 samples.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Air Pollutants / analysis
  • Environmental Monitoring / methods*
  • Graphite / chemistry*
  • Magnetics*
  • Nanocomposites / chemistry*
  • Nitrogen Compounds / analysis*
  • Particulate Matter / analysis*
  • Polycyclic Aromatic Hydrocarbons / analysis*
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

Substances

  • Air Pollutants
  • Nitrogen Compounds
  • Particulate Matter
  • Polycyclic Aromatic Hydrocarbons
  • Graphite