Quantification of hydroxyacetone and glycolaldehyde using chemical ionization mass spectrometry 1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA
30 Apr 2014
2Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
3Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, USA
*now at: National Exposure Research Laboratory, Environmental Protection Agency, Research Triangle Park, NC, USA
**now at: Geophysical Fluid Dynamics Laboratory/National Oceanic and Atmospheric Administration, and Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, USA
Received: 26 Jul 2011 – Published in Atmos. Chem. Phys. Discuss.: 22 Aug 2011Abstract. Chemical ionization mass spectrometry (CIMS) enables online, rapid, in situ
detection and quantification of hydroxyacetone and glycolaldehyde. Two
different CIMS approaches are demonstrated employing the strengths of single
quadrupole mass spectrometry and triple quadrupole (tandem) mass
spectrometry. Both methods are generally capable of the measurement of
hydroxyacetone, an analyte with known but minimal isobaric interferences.
Tandem mass spectrometry provides direct separation of the isobaric compounds
glycolaldehyde and acetic acid using distinct, collision-induced dissociation
daughter ions. The single quadrupole CIMS measurement of glycolaldehyde was
demonstrated during the ARCTAS-CARB (Arctic Research of the Composition of the Troposphere from Aircraft
and Satellites - California Air Resources Board) 2008 campaign, while triple quadrupole
CIMS measurements of glycolaldehyde and hydroxyacetone were demonstrated
during the BEARPEX (Biosphere Effects on
Aerosols and Photochemistry Experiment) 2009 campaign. Enhancement ratios of glycolaldehyde in
ambient biomass-burning plumes are reported for the ARCTAS-CARB campaign.
BEARPEX observations are compared to simple photochemical box model
predictions of biogenic volatile organic compound oxidation at the site.
Revised: 10 Mar 2014 – Accepted: 11 Mar 2014 – Published: 30 Apr 2014
Citation: St. Clair, J. M., Spencer, K. M., Beaver, M. R., Crounse, J. D., Paulot, F., and Wennberg, P. O.: Quantification of hydroxyacetone and glycolaldehyde using chemical ionization mass spectrometry, Atmos. Chem. Phys., 14, 4251-4262, doi:10.5194/acp-14-4251-2014, 2014.