Canada’s Air Pollutant Emissions Inventory Report 2020: chapter 2.7

2.7 Lead (Pb)

In 2018, approximately 191 tonnes (t) of Pb were emitted in Canada (Table 2–9). Ore and mineral industries were the largest contributor at 84% (160 t) of emissions, with the non-ferrous refining and smelting industry accounting for the largest share at 58% (110 t) of total Pb emissions. Transportation and mobile equipment was the second largest contributor at 10% (19 t) of total emissions (almost all of which was from air transportation).

Overall, lead emissions decreased by 82% (842 t) from 1990 to 2018 (Figure 2–7). This decreasing trend is partly attributable to the closure of outdated smelters and partly to the implementation, since 2006, of regulated pollution prevention plans (ECCC, 2017). However, since 2013 lead emissions attributed to the non-ferrous refining and smelting industry have slowly increased. Reductions in emissions in air transportation across the time series has also influenced the trend.

The most significant changes in Pb emissions from 1990 to 2018 include:

Figure 2–7: Major contributors to national Pb trends

Figure 2-7 (See long description below)
Long description for Figure 2–7

Figure 2–7 is a stacked area graph displaying the five major contributors to national Pb trends. The five contributors are the following: Non-Ferrous Refining and Smelting Industry, Air Transportation, Iron and Steel Industry, Mining and Rock Quarrying, and Other. The following table displays the contributions (t) for the years 1990 to 2018.

Figure 2–7: Major contributors to national Pb trends (t)
Sector 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Sector 1 - Non-Ferrous Refining and Smelting Industry 886 847 899 474 1 009 623 697 533 454 438 443 374 331 229 176 132 169 171 161 158 131 96 88 75 85 112 111 131 110
Sector 2 - Mining and Rock Quarrying 0.00 0.00 0.00 5.0 6.2 12 14 69 79 32 42 47 53 68 68 65 66 57 44 31 20 10 7.1 3.1 0.90 1.0 1.1 1.2 39
Sector 3 - Air Transportation 24 18 16 17 15 17 17 16 16 15 15 16 16 15 13 15 14 16 15 18 18 15 20 18 17 19 20 20 18
Sector 4 - Iron and Steel Industry 54 54 54 80 82 71 74 60 54 16 8.0 18 17 27 25 5.7 5.9 6.6 6.0 4.5 6.3 6.1 6.7 5.2 6.1 5.5 5.2 5.1 6.2
Sector 5 - Other 69 69 68 96 110 58 47 44 42 46 46 95 43 45 36 29 29 28 29 24 25 24 18 16 18 17 18 16 17

Table 2–9: National summary of annual Pb emissions

Ore and mineral industries (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 940 000 500 000 210 000 87 000 97 000 120 000 120 000 140 000 160 000
Aluminium industry 84 84 -* - - - - - -
Asphalt paving industry 1 400 1 200 1 200 980 1 100 1 000 1 000 980 980
Cement and concrete industry 550 610 960 530 600 870 700 570 400
Foundries 2 000 6 600 1 600 210 190 210 200 170 210
Iron and steel industry 54 000 8 000 5 700 5 200 6 100 5 500 5 200 5 100 6 200
Iron ore industry - - - 2 100 2 700 2 600 3 300 3 800 2 900
Mineral products industry - - 0.19 - - - 15 - -
Mining and rock quarrying - 42 000 65 000 3 100 900 980 1 100 1 200 39 0001
Non-ferrous mining and smelting industry 890 000 440 000 130 000 75 000 85 000 110 000 110 000 130 000 110 000
Oil and gas industry (kg)
Sector 1990 2000 2005 2012 2013 2014 2015 2016 2017
Sub-total 340 300 720 1 100 670 510 580 520 570
Downstream oil and gas industry 200 81 450 380 300 320 380 350 400
Upstream oil and gas industry 140 220 260 700 370 190 200 160 170
Electric power generation (utilities) (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 11 000 15 000 1 900 1 400 1 800 1 500 1 400 1 700 1 300
Coal 8 300 11 000 1 300 860 1 200 820 770 1 100 810
Diesel -* - - - - - - - -
Natural gas 430 530 72 85 93 97 86 91 83
Waste materials - - - - - 0.44 0.37 0.35 0.36
Other (electric power generation) 2 600 3 200 590 430 490 530 560 540 380
Manufacturing (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 48 000 16 000 17 000 4 700 6 500 5 900 6 500 3 700 6 800
Abrasives manufacture -* - - - - - - - -
Bakeries - - - - - - - - -
Biofuel production - - - - - - - - -
Chemicals industry 12 000 300 1 800 85 82 120 45 59 30
Electronics 2 000 710 96 20 18 17 19 22 23
Food preparation - - - - - - - - -
Glass manufacturing 21 6.0 25 0.30 0.00 0.00 0.00 - -
Grain industry - - - - - - - - -
Metal fabrication 28 000 9 200 10 000 2 200 3 600 1 900 3 200 1 800 3 300
Plastics manufacturing 76 46 21 0.01 4.7 4.8 4.8 1.3 1.3
Pulp and paper industry 2 100 840 2 400 1 400 2 200 3 400 2 800 1 300 1 500
Textiles - - 0.01 - - - - - -
Vehicle manufacture (engines, parts, assembly, painting) 950 2 400 770 65 68 68 66 69 64
Wood products 3 500 2 500 1 400 830 530 330 330 390 1 900
Other (manufacturing) - 220 150 32 32 25 39 9.0 6.7
Transportation and mobile equipment (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 24 000 16 000 16 000 19 000 18 000 20 000 21 000 21 000 19 000
Air transportation 24 000 15 000 15 000 18 000 17 000 19 000 20 000 20 000 18 000
Heavy-duty diesel vehicles -* - - - - - - - -
Heavy-duty gasoline vehicles - - - - - - - - -
Heavy-duty LPG/NG vehicles - - - - - - - - -
Light-duty diesel trucks - - - - - - - - -
Light-duty diesel vehicles - - - - - - - - -
Light-duty gasoline trucks - - - - - - - - -
Light-duty gasoline vehicles - - - - - - - - -
Light-duty LPG/NG trucks - - - - - - - - -
Light-duty LPG/NG vehicles - - - - - - - - -
Marine transportation 600 740 830 1 100 1 200 550 570 580 600
Motorcycles - - - - - - - - -
Off-road diesel vehicles and equipment - - - - - - - - -
Off-road gasoline/LPG/NG vehicles and equipment - - - - - - - - -
Rail transportation 310 290 290 210 200 170 150 170 180
Tire wear and brake lining - - - - - - - - -
Agriculture (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 30 30 26 76 84 70 68 67 62
Animal production -* - - - - - - - -
Crop production - - - - - - - - -
Fuel use 30 30 26 76 84 70 68 67 62
Commercial / residential / institutional (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 4 300 4 800 4 600 3 500 3 200 3 200 3 200 3 200 3 100
Cigarette smoking2 2.3 1.9 1.5 1.1 1.2 1.0 1.0 1.0 1.1
Commercial and institutional fuel combustion 250 290 420 510 230 250 240 240 220
Commercial cooking -* - - - - - - - -
Construction fuel combustion 10 4.9 11 7.5 7.3 7.7 6.7 7.1 7.2
Home firewood burning 3 500 3 200 2 600 2 700 2 600 2 600 2 600 2 600 2 600
Human2 - - - - - - - - -
Marine cargo handling - 970 1 200 59 20 10 41 51 50
Residential fuel combustion 490 410 390 290 300 280 250 240 260
Service stations - - - - - - - - -
Other (Miscellaneous) - - - - - - - - -
Incineration and waste (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total 210 150 340 200 210 190 250 240 250
Crematoriums 2.0 2.8 3.6 4.7 5.2 5.3 5.5 5.7 5.8
Waste incineration 200 150 300 170 180 170 160 160 160
Waste treatment and disposal -* - 38 24 22 12 80 69 88
Paints and solvents (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total -* - - 0.06 0.00 - - - -
Dry cleaning - - - - - - - - -
General solvent use - - - - - - - - -
Printing - - - - - - - - -
Surface coatings - - - 0.06 0.00 - - - -
Dust (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total -* - - - - - - - -
Coal transportation - - - - - - - - -
Construction operations - - - - - - - - -
Mine tailings - - - - - - - - -
Paved roads - - - - - - - - -
Unpaved roads - - - - - - - - -
Fires (kg)
Sector 1990 2000 2005 2013 2014 2015 2016 2017 2018
Sub-total -* - - - - - - - -
Prescribed Burning - - - - - - - - -
Structural fires - - - - - - - - -
Totals (kg)
Source 1990 2000 2005 2013 2014 2015 2016 2017 2018
Ore and mineral industries 940 000 500 000 210 000 87 000 97 000 120 000 120 000 140 000 160 000
Oil and gas industry 340 300 720 1 100 670 510 580 520 570
Electric power generation (utilities) 11 000 15 000 1 900 1 400 1 800 1 500 1 400 1 700 1 300
Manufacturing 48 000 16 000 17 000 4 700 6 500 5 900 6 500 3 700 6 800
Transportation and mobile equipment 24 000 16 000 16 000 19 000 18 000 20 000 21 000 21 000 19 000
Agriculture 30 30 26 76 84 70 68 67 62
Commercial / residential / institutional 4 300 4 800 4 600 3 500 3 200 3 200 3 200 3 200 3 100
Incineration and waste 210 150 340 200 210 190 250 240 250
Paints and solvents -* - - 0.06 0.00 - - - -
Dust - - - - - - - - -
Fires - - - - - - - - -
Grand total 1 000 000 550 000 250 000 120 000 130 000 150 000 160 000 170 000 190 000

Notes:

Totals may not add up due to rounding.

1. Estimate under review.

2. Cigarette Smoking as well as Infant Diapered Waste (which is included within the Human sector) are being considered for removal from future inventories. If you have any questions, please contact us at ec.iepa-apei.ec@canada.ca or 1-877-877-8375.

* - = no emission

0.00 Indicates emissions truncated due to rounding

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