The assessment of ambient air pollution trend in Klang valley, Malaysia
作者： Mohammad Firuz Ramli , Mohd Talib Latif , Sharifah Norkhadijah Syed Ismail , Emilia Zainal Abidin , Sarva Mangala Praveena
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摘要: This study aims to explore the trend of ambient air pollution (i.e. PM10, CO, NO2, O3) within eight selected Malaysian monitoring stations in Klang valley five years database (from 2007 2011). It integrated statistical analysis compare with recommended Ambient Air Quality Guidelines (MAAQG) standard and determine association between pollutants meteorological factors. The geographical information system (GIS) softwarewas used assess spatial across north-east south-west monsoons Principal Component Analysis (PCA) major sources pollution. showed hourly trends (1-hour averaging time) O3 NO2 Valley were below MAAQG standard. recorded highest concentration while Petaling Jaya concentrations CO Shah Alam O3. 24-hour data for PM10 was found exceed throughout five-year period. All positively correlated each other exception Meteorological factors, i.e. temperature, wind speed humidity alsosignificantly associated pollutants. distribution map indicated that levels remain highly concentrated during monsoon (hot dry season), (wet season). determined first inter-monsoon.
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