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Introduction

In the case of animal housings, masses of solid and liquid inputs canbe certified (weight of animals, food, water, litter), mass balance can provide realistic and inexpensive physical constraints to check emission measurements. Consequently it can be employed in a process of quality assurance.

Initially it is necessary to carry out a matter balance on the volatile and non volatile coumpounds. It will compare the opening and final inventories. In the second time, the house atmosphere is either sampled, or analyzed directly to know volatile in cash nitrogen, water and carbon contents.

Equipment

Sampling the gases

• Gas Analyzer (for example infra-red photoacoustics analyzer INNOVA® 1312 with filters CO₂, CO, CH₄, NH₃, N₂O, H₂O)
• 1 TEDLAR® bag for the sampling of outside air
• 1 TEDLAR® bag for the sampling of inside air
• Thermo Hygromètre to characterize the temperature and hygrometry inside and outside the house
• Air pump (for example aerator of aquarium)
• Filters (Milipore Millex- HV Hydrophile PVDF 0,45 μm) placed at entry of the sampling system, one for outside and one for the inside air
• PTFE tubes to connect filters, bags, pumps and analyzer gas

Sampling the stock

• See procedure “mass balance of storage”

Other equipment

• Clothing for animal farm (disposable coat and boots or specific clothing of the animal farm)
• Material for taking notes
• Material of cleaning and disinfection of equipment after the measurements
• Water flowmeter

Guideline details

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