Hong Kong Air Pollutant Emission Inventory - Sulphur Dioxide

Chart for 1997-2015 Sulphur Dioxide (SO2) Emissions

Legend for Sulphur Dioxide (SO2) Emissions Chart

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Relative Significance

Between 1997 and 2015, SO2 emissions decreased by 76%, which was mainly caused by a decline in emissions from the public electricity generation sector.  Navigation and public electricity generation sectors were the top two sources of SO2 emissions, accounting for 59% and 37% of total SO2 emissions in 2015, respectively.

During the same period, SO2 levels measured at the EPD's general air quality monitoring stations followed closely with the SO2 emission trend, indicating that the ambient SO2 mainly originates from local emission sources, in addition to other factors such as meteorological conditions.


User review date: 
Tuesday, 16 June, 2015