Atmospheric Condensed-Phase Reactions of Glyoxal with Methylamine

  title={Atmospheric Condensed-Phase Reactions of Glyoxal with Methylamine},
  author={David O. De Haan and Margaret A. Tolbert and J. L. Jimenez},
1] Glyoxal reacts with methylamine in drying cloud droplet/aerosol surrogates to form high molecular mass oligomers along with smaller amounts of 1,3-dimethylimidazole and light-absorbing compounds. The patterns observed by high-resolution time-of-flight aerosol mass spectrometry indicate that oligomers form from repeated imine units. The reactions are 1st order in each reactant: rate-limiting imine formation is followed by rapid dimer and oligomer formation. While excess methylamine evaporates… CONTINUE READING
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