Title: Measurement of gas and particulate amines at a dairy operation Author
Submitted to: Air and Waste Management Annual Conference Proceedings
Publication Type: Proceedings
Publication Acceptance Date: May 29, 2013
Publication Date: August 5, 2013
Citation: Silva, P.J. 2013. Measurement of gas and particulate amines at a dairy operation. Air and Waste Management Annual Conference Proceedings. Article #13506:1-5. Technical Abstract: Agricultural facilities are a source of particles and gases that can exhibit influences on air quality. Particle mass concentration influences from agricultural sources can include both primary emissions and secondary particle formation through the emission of gaseous precursors. Reports showing amines as particle forming precursors has lead to a need for new measurements of amines from these types of operations. The ambient ion monitor (AIM) 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 AIM acquires data on amines (and other compounds) with one hour time response. Here we will discuss a recent field deployment of the AIM instrument to detect alkyl amines at a dairy facility. We show that the AIM instrument can detect a number of amines at concentrations relevant to agricultural emissions. Trimethylamine is the amine detected in highest concentration and it is present in both the gas and particle phase. Other amines detected include dimethylamine, and butylamine. Not all amines are observed in the particle phase. Trimethylamine is enriched in the particle phase relative to other amines.