Estimated total NH₃ emissions in Canada in year 2000 were 583,752 tonnes (with open sources e.g. forest fires, prescribed burning). The primary emitting sources are:

• Agricultural animals
• Pesticide and fertilizer application
• Chemicals industry
• Other industrial sources (e.g. petroleum refineries, pulp and paper mills)
• Transportation (mainly gasoline fuelled cars and trucks)

NH₃ Emissions - Year 2000
(Including Open Sources - % of Total)