Characterization of PM from Animal Feeding Operations

STEVEN TRABUE (1), Kenwood Scoggin (1), Ronaldo Maghirang (2), Hongwei Xin (3), Hong Li (3), Laura McConnell (4)

(1) USDA ARS-Ames, IA, (2) Kansas State University, (3) Iowa State University, (4) USDA ARS-Beltsville, MD

     Abstract Number: 790
     Last modified: May 14, 2010

Abstract
Little is know about the emissions of PM from animal feeding operations, yet PM is thought to be a prime transport mechanism for both odors and biological material. In this study, TSP, PM10 and PM2.5 from several different animal feeding operations (AFOs) were analyzed for VOC profiles at control, source and downwind locations (50-400 m). The types of operations monitored included cattle feedlot, poultry and swine production facilities. Sample were analyzed by thermal desorption GC-MS (TD-GC/MS) technique. The VOC compounds assoicated with PM from AFO were oxgenated and dominated by n-alkanoic acids with C16 and C18 as the most abundant compounds. Other compound classes included alcohols, carbonyls, ketones, phenols, and several multi-functional group compounds. The VOC profile for each PM size fraction were similar for each production/animal facility. The types of production facility did influcence the VOC profile for PM. We will discuss differences between various AFO as well as the change in VOC profile of samples taken at source and downwind locations.