Aerosol and Gas Phase Concentrations from an Adapted Annular Denuder System in a Broiler Housing Facility

摘要

Fine particulate matter (pm2.5) is present in animal housing facilities from both primary and secondary sources. Measuring secondary aerosols in harsh environments with high gas and particulate concentrations, such as poultry housing facilities, is anongoing challenge. This study presents the results from the implementation of an adapted annular denuder system (ADS) used to measure secondary PM2.5 from inside a broiler facility in Ontario, Canada. Results from this work show that secondary aerosolsformed the majority of total PM25 during the early portion of the growth cycle. It was further determined that the ion balance between ammonium and anions was not consistent, leading to the conclusion that a significant portion of the aerosol species areassociated with a previously unidentified source that is not necessarily due to secondary reactions.