Articles | Volume 17, issue 22
Atmos. Chem. Phys., 17, 13819–13831, 2017
https://doi.org/10.5194/acp-17-13819-2017
Atmos. Chem. Phys., 17, 13819–13831, 2017
https://doi.org/10.5194/acp-17-13819-2017

Research article 20 Nov 2017

Research article | 20 Nov 2017

The role of highly oxygenated molecules (HOMs) in determining the composition of ambient ions in the boreal forest

Federico Bianchi et al.

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Latest update: 23 Sep 2021
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Short summary
Naturally charged highly oxidised molecules (HOMs) were characterized using advanced mass spectrometers. Two different classes of compounds, clustered with the nitrate and bisulfate ions, were identified: HOMs containing only carbon, hydrogen and oxygen and nitrogen-containing HOMs or organonitrates (ONs). They exhibit strong diurnal variations where HOMs peak during night and ONs during day. Finally, large clusters containing up to 40 carbon atoms (four oxidized α-pinene units) were observed.
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