National inventory of sources and emissions of fluoride (1972) / Pollution Data Analysis Division, Air Pollution Programs Branch, Air Pollution Control Directorate. : En42-15/75-7E-PDF

"Atmospheric emissions of fluoride from various Canadian sources have been estimated for the year 1972. The data presented in this report are summarized in Table 1 and Figures 1 and 2. Total emissions of fluoride to the atmosphere are estimated at 15 644 tons. The largest contributor is the primary aluminum industry, which accounts for 57% of the total. Emissions from phosphate fertilizer and elemental phosphorus plants account for a further 17% and the primary iron and steel industry for 16%. On a geographic basis the Province of Quebec accounts for 48% of the Canadian total followed by Ontario with 18%. It is estimated that about 70% of nationwide fluoride emissions, close to 11 000 tons, are in the gaseous state"--Abstract.

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