Air samples are taken in the vicinity of livestock production facilities and trapped for chromatographic and mass spectrographic analyses. From samples taken in swine buildings, thirty different compounds were identify and for eight of them the concentration was determined. A sampling box has also been developped for ammonia emission measurements from earth, building, and treatment surfaces. This sampling box allows also for total gaseous emission capture for a define area and a specific sampling period.
Details are given on the equipments and methodology used.