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United States Department of Agriculture

Agricultural Research Service

Research Project: Efficient Management and Use of Animal Manure to Protect Human Health and Environmental Quality

Location: Food Animal Environmental Systems Research

Title: Reaction mechanisms of secondary and tertiary amines with OH and NO3 radicals

item Price, Derek
item Tang, Xiaochen
item Silva, Philip - Phil
item Purvis-roberts, Kathleen
item Cocker, David

Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 1/3/2012
Publication Date: 3/28/2012
Citation: Price, D.J., Tang, X., Silva, P.J., Purvis-Roberts, K.L., Cocker, D.R. 2012. Reaction mechanisms of secondary and tertiary amines with OH and NO3 radicals. American Chemical Society National Meeting. Abstract Only.

Interpretive Summary:

Technical Abstract: Emissions of aliphatic amines are common near agricultural facilities such as animal feed lots. Determining the reactions of these amines with common atmospheric radicals is important to understanding both daytime and nighttime atmospheric chemistry. Several smog chamber experiments were conducted in which aliphatic tertiary and secondary amines were reacted with either hydroxyl radical (OH) or nitrate radical (NO3) in both dry and humid conditions. Chemical composition of the aerosol products was obtained with a High Resolution Time of Flight Aerosol Mass Spectrometer (HR-ToF-AMS). A number of mass spectra showed highly oxidized fragments at much higher mass than the amine precursor. These larger compounds were formed through peroxy radical reactions or hydrogen rearrangement pathways. Another major reaction pathway observed was the formation of amine salts. In the humid NO3 experiments, there was an increase in salt production along with the addition of acid catalyzed aqueous reactions.

Last Modified: 09/19/2017
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