Author: Antonio Da Roza

Date: 5/8/10

80% - 95% of the total tonnage of air pollution in the Pearl River Delta comes from mainland China sources. [1] In tonnes, Hong Kong only accounts for 1% - 15% of total emissions in the Pearl River Delta. [2]

This total emission method of calculating air pollution emissions is useful on a regional scale to depict the volumes in terms of tonnage from different sources. Based on 1997 data, analysis results showed that the Pearl River Delta Economic Zone (PRDEZ) contributed 88% of VOC, 95% of Respirable Suspended Particulates (RSP or PM10), 80% of Nitrogen Oxides (NOx), and 87% of Sulphur Dioxide (SO2) to HKSAR in the base year of 1997. [1]

See Also

  1. Cross-border pollution
  2. Source-based calculation
  3. Time-based analysis


  1. 1.0 1.1 ‘Relative Significance of Local Vs Regional Sources’, Civic Exchange and Hong Kong University of Science and Technology, March 2007 - last accessed 7/8/10
  2. ‘Air Quality Objectives Review Public Consultation’, Environmental Protection Department Hong Kong, July 2009 - last accessed 5/8/10