Abstract
Abstract Chemical characterization of PM emanating from animal confinement buildings can provide essential information for receptor modeling-based PM source apportionment as well as health effects assessment. In this study, PM10 and PM2.5 samples were collected from twelve swine (farrowing, gestation, weaning, and finishing) and six poultry (layer hen and tom turkey) confinement buildings in the U.S. Midwest and their inorganic composition, in terms of trace elements and ions, was investigated. A total of 23 species were identified and quantified, including Al, B, Ba, Ca, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, S, Si, Sr, Ti, Zn, Cl−, NO3−, SO42− and NH4+. The total mass fraction of identified species was typically less than 16%. NH4+ was detected in low contents (
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