Table 5.3
Top ten substances released to air according to the National Pollutant Release Inventory, 2009

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Top ten substances released to air according to the National Pollutant Release Inventory, 2009


Table summary
This table displays the results of top ten substances released to air according to the national pollutant release inventory releases to air  and share of total, calculated using tonnes and percent units of measure (appearing as column headers).
  Releases to air  Note 1 Share of total
  tonnes percent
Sulphur dioxide 1,308,230 38.6
Carbon monoxide 866,724 25.6
Nitrogen oxides (expressed as
NO2)		 698,015 20.6
Volatile organic compounds (VOCs) 243,923 7.2
Total particulate matter (TPM) 161,365 4.8
Ammonia (total)  Note 2 18,943 0.6
Total Reduced Sulphur (TRS) 16,256 0.5
Methanol 11,780 0.3
Carbonyl sulphide 6,977 0.2
Hydrochloric acid 6,390 0.2
1.
Includes stack or point, storage or handling, fugitive, spills and other non-point releases.
2.
Refers to the total of both ammonia (NH 3) and ammonium ion (NH4+) in solution.
Source(s):
Environment Canada, Pollutant Inventories and Reporting Division, 2011, National Pollutant Release Inventory (NPRI) Downloadable Datasets, www.ec.gc.ca/inrp-npri/default.asp?lang=en&n=0EC58C98- (accessed February 14, 2012).
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