Journal article
Properties of nitrate, sulfate and ammonium in typical polluted atmospheric aerosols (PM10) in Beijing
Atmospheric Research, Vol.84(1), pp.67-77
2007
Abstract
To gain an understanding of the characteristics of nitrate, sulfate and ammonium in the urban atmosphere of Beijing, an experiment was conducted in October 2004, using a method involving the rapid collection of particles and analysis using an ion chromatography system. The study shows that the mean concentration of water soluble ions (WSI) increased during heavily polluted weather, and this change in the concentration of pollutants was related to the meteorological background. The concentration of nitrate, sulfate and ammonium increased 7.9, 4.1 and 5.4 times, respectively, during heavily polluted periods. The concentration of nitrate increased most among the WSI in PM 10. The diurnal variations of nitrate, sulfate and ammonium in more polluted periods were different from those in less polluted periods. The highest concentration of nitrate (NO 3 -), sulfate (SO 4 2-), and ammonium (NH 4 +) appeared at 19:00 during more polluted periods. In contrast, the highest concentrations of these compounds occurred at noon during less polluted periods. A correlation analysis showed that NO 3 -, SO 4 2-, NH 4 +, nitrogen oxides (NO x) and sulfur dioxide (SO 2) had significant positive correlations in more polluted periods. The transformation ratio from SO 2 and NO x to SO 4 2- and NO 3 - was higher in more polluted than that in less polluted periods.
Details
- Title
- Properties of nitrate, sulfate and ammonium in typical polluted atmospheric aerosols (PM10) in Beijing
- Authors/Creators
- Z. Kai (Author/Creator) - Institute of Atmospheric PhysicsW. Yuesi (Author/Creator) - Institute of Atmospheric PhysicsW. Tianxue (Author/Creator) - Institute of Atmospheric PhysicsM. Yousef (Author/Creator) - Atomic Energy Commission of SyriaF. Murray (Author/Creator)
- Publication Details
- Atmospheric Research, Vol.84(1), pp.67-77
- Publisher
- Elsevier B.V.
- Identifiers
- 991005544492707891
- Copyright
- © 2006 Elsevier B.V.
- Murdoch Affiliation
- School of Environmental Science
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 8 Earth Sciences
- 8.124 Environmental Sciences
- 8.124.10 Atmospheric Aerosols
- Web Of Science research areas
- Meteorology & Atmospheric Sciences
- ESI research areas
- Geosciences