AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Detection of a Variety of Amines with Ambient Pressure Proton Transfer Mass Spectrometry
Kimberly Carlson, NATHAN FRESHOUR, Walker Glasoe, Baradan Panta, David Hanson, Augsburg College
Abstract Number: 463 Working Group: Aerosol Chemistry
Abstract Ammonia and amines are base molecules in the atmosphere that can have strong interactions with acid species. Among other roles, these nitrogenous base molecules are implicated in new particle formation along with sulfuric acid vapor. Described here are laboratory experiments where these species were monitored with an atmospheric pressure proton transfer mass spectrometer. Detection capabilities and sensitivities were evaluated for a variety of amines: alkyl, aromatic, aminoethanol, etc. Calibration procedures were developed to quantify the permeation rate of home-made permeation tubes. The results of computational fluid dynamics show the typical losses in a cylindrical flow reactor compare well with measurements in the effluent of a flow reactor used for laboratory nucleation studies. Measurements of amines in urban air that show a variety of amino species will be presented.