A high-resolution time-of-flight aerosol mass spectrometer (HR-TOF-AMS) yields quantitative information on particle size and elementary chemical composition. The AMS combines size resolved particle measurements with mass spectrometry in a single real-time instrument. The AMS is used for analysis of the elementary chemical composition of the particles, which are inside the AURA chamber. The AMS is also applicable for ambient measurements. The AMS measures how much organic material the particle phase consists of and also how much sulfate, nitrate, ammonia and chloride is present in the particle phase.

Relevant publications

DeCarlo et al. (2006). A Field-Deployable High-Resolution Time-of-Flight Aerosol Mass Spectrometer, Anal. Chem., 78, 8281-8289.

Jensen et al. (2021), Temperature and volatile organic compound concentrations as controlling factors for chemical composition of α-pinene-derived secondary organic aerosol. Atmos. Chem. Phys., 21, 11545–11562