Studies of Atmospheric PM2.5 and its Inorganic Water Soluble Ions and Trace Elements around Southeast Asia

a Review

Nadhira Dahari, Khalida Muda, Mohd Talib Latif, Norelyza Hussein

Research output: Contribution to journalReview article

Abstract

Air pollution is a worldwide issue that is mainly caused from excessive inhalation of hazardous PM2.5 pollutant that is emitted into the air. The objective of this study is to assess the fundamental knowledge revolving PM2.5 (particles aerodynamic diameter of lower than or equal to 2.5 μm) and its inorganic composition in ambient air of urban areas, mainly in Malaysia in comparison to other Southeast Asia countries. This research also investigates the theory of particle number concentration (PNC) with PM2.5, also the health effects and origins of the emissions. The factors affecting the PM2.5 mass include the local emission, El Nino phenomenon, land, meteorological effects, monsoons, rainfall events, sea breeze, transboundary pollution and seasonal changes. 24 h mean PM2.5 mass concentration for metropolitan regions in the SEA is in the range of 11 μgm−3 and 72.3 μgm−3, while between 5.30 μgm−3 and 55.89 μgm−3 for semi-urban zones. For rural area, the 24 h mean PM2.5 value is about 30 μgm−3. The findings indicate that metals in PM2.5 emission are frequently Pb, Se, Zn, Cd, As, Bi, Ba, Cu, Rb, V, Ni, Fe, Ca, Mn, Cr, Al, Si and K, where Zn has the uppermost range of 133.50 to 419.30 ngm−3 while the major water-soluble ions exist are NH4+, K+, Ca2+, Na+, in which Na+, NH4+ and Cl- are present in aged sea salt and mixed industrial, Ca2+ and Mg2+ present in mineral dust, NH4+, K+ and SO42− present in mixture of SIA and biomass burning. There is a high correlation between the particle mass concentration and PNC level, especially the ones in accumulation mode (PNC0.1–1.0) which are mostly originated from the emission of heavy traffic streets.

Original languageEnglish
JournalAsia-Pacific Journal of Atmospheric Sciences
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

trace element
ion
transboundary pollution
water
sea breeze
sea salt
biomass burning
El Nino
ambient air
aerodynamics
rural area
monsoon
atmospheric pollution
urban area
dust
rainfall
particle
Southeast Asia
pollutant
metal

Keywords

  • Atmospheric
  • Particulate matter
  • PM
  • Southeast Asia, urban environment

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Studies of Atmospheric PM2.5 and its Inorganic Water Soluble Ions and Trace Elements around Southeast Asia : a Review. / Dahari, Nadhira; Muda, Khalida; Latif, Mohd Talib; Hussein, Norelyza.

In: Asia-Pacific Journal of Atmospheric Sciences, 01.01.2019.

Research output: Contribution to journalReview article

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