Title: Adaptation of an Ambient Ion Monitor for Detection of Amines in Airborne Particles Authors
Submitted to: Proceedings of Pittcon Meeting
Publication Type: Abstract Only
Publication Acceptance Date: October 6, 2010
Publication Date: March 17, 2011
Citation: Silva, P.J., Lovanh, N.C. 2011. Adaptation of an Ambient Ion Monitor for Detection of Amines in Airborne Particles. Proceedings of Pittcon Meeting. Abstract only. Technical Abstract: Agricultural facilities are the source of particles and gases that can exhibit an influence on air quality. Particle mass concentration influences from agricultural sources can include both primary emissions and secondary particle formation through emission of gaseous precursors. An ambient ion monitor is composed of a parallel plate denuder, aerosol steam generator, and two ion chromatographs equipped with conductivity detectors to provide semi-continuous air quality monitoring capability. The ambient ion monitor has been used for detection of common particulate ions (ammonium, chloride, nitrate, nitrite, and sulfate) and their precursor gases in a number of studies of urban air quality. In this project we pursue adapting the cation method to other organic ions believed important in the field of agricultural emissions, specifically targeting small alkyl amines. Target analytes for the amine detection scheme include primary, secondary, and tertiary alkyl amines (C1-C4) and alky primary diamines (C3-C5). Suppressed conductivity detection using with a gradient separation using methanesulfonic acid was used to separate and quantify the amines. Data discussed will include experiments to determine the appropriate denuder composition to optimize collection and detection of the relevant gas-phase precursor amines.