Interaction patterns of major air pollutants in Hong Kong territory

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)247-259
Journal / PublicationScience of the Total Environment
Issue number1-3
Publication statusPublished - 25 May 2004


Air pollution ina metropolitan city like Hong Kong is a major obstacle to improve air quality and living environment due to the high population density and the vehicle emission increases. The high air pollutant levels impose harm to the human health and impair the city image. The characteristic analysis of air pollutants is very important and necessary to pollutant monitoring, forecasting and controlling. In this study, the interaction patterns of principle air pollutants, e.g. nitrogen dioxide (NO2), nitric oxide (NO), nitric oxides (NOx) and ozone (O3), a secondary pollutant, are investigated based on the measured database in four selected areas, which covers two urban types (i.e. residential area, mixed residential/commercial/industrial area) in Hong Kong, during the period of 1999-2001. The study involves analyzing the chemical and physical properties, the characteristics of air pollutants and the factors affecting such interactions using statistical method. The results reveal several routines in urban air pollutants' variations, interaction and trends from macro aspect. © 2003 Elsevier B.V. All rights reserved.

Research Area(s)

  • Characteristic analysis, Correlation, Interaction pattern, Mixing ratio, Pollutant level