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Hong Kong Air Pollutant Emission Inventory - Carbon Monoxide

 Chart for 1997-2016 Carbon Monoxide (CO) Emissions

Legend for Carbon Monoxide (CO) Emissions Chart

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Relative Significance

Between 1997 and 2016, CO emissions decreased by 37% which was mainly caused by a decline in emissions from the road transport sector.  Road transport and navigation sectors were two major sources of CO emissions, accounting for 54% and 24% of the total CO emissions in 2016, respectively. 

During the same period, CO levels measured at the EPD's ambient and roadside air quality monitoring stations were very low and did not follow closely with the CO emission trend, indicating that CO could originate from both local and regional sources.

User review date: 
Tuesday, 16 June, 2015