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3. Metrology
Various techniques can be used to quantify nitrous oxide flows. The measurement strategy will vary according to whether the sources under study are large or small, diffuse or localized.
3.1 Emissions from stationary sources
For stationary sources, please refer to the following standard: Afnor XP X 43-305.
This method samples a gas flowing through a pipe (chimney type) to determine the nitrous oxide flows passing through it. Two types of container can be used to store these gas samples.
The first, generally made of Pyrex, is fitted with two valves that allow the gas to circulate, flushing the container before closing it. This type of container will trap a given volume at a pressure slightly higher than atmospheric...
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Bibliography
Standards and norms
- Air quality - Stationary source emissions – Determination of nitrous oxide (N2O) concentration at emission using a non-dispersive infrared method. – Automatic method, 34 p. - AFNOR, XP X43-305 - 2005
- Méthode d'analyse de gaz par absorption d'un faisceau de radiations infrarouges non dispersé, 4 p. - AFNOR, NF X20-301 - 1978
Websites
http://encyclopedia.airliquide.com
Air emissions in mainland France, substances involved in the greenhouse effect (April 2006). (
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