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SUMMARY:Assessment of Major Air Pollutants in the Tropical Urban Environme
 nt of Kuala Lumpur - Prof. Mohd Talib Latif (University Kebangsaan Malaysi
 a)
DTSTART:20221121T140000Z
DTEND:20221121T150000Z
UID:TALK192944@talks.cam.ac.uk
CONTACT:104065
DESCRIPTION:Air quality in Kuala Lumpur\, Malaysia has been associated wit
 h various natural and anthropogenic sources and meteorological conditions.
  Air pollutants that show seasonal variations and frequently exceed the Ma
 laysia Ambient Air Quality Standard (MAAQS) are particulate matter (PM) an
 d surface ozone (O3)\, predominantly related to the monsoon seasons. Other
  air pollutants are usually associated with daily activities particularly 
 related to the number of motor vehicles on roads\, industrial activities a
 nd combustion processes. Haze episode due to biomass burning has been reco
 gnised as a major source of particulate matter in Kuala Lumpur. Potassium 
 (K+)\, sulphate (SO42-)\, ammonium (NH4+)\, zinc (Zn)\, and iron (Fe) domi
 nated the composition of inorganic substances in PM. Combustion from bioma
 ss burning during haze episodes also increased the concentration of carcin
 ogenic substances such as polycyclic aromatic hydrocarbons (PAHs). Several
  organic molecules such as levoglucosan (1\,6-anhidro-β-D-glucopyranose) 
 have been identified as an indicator for biomass burning.\n\nHigh surface 
 O3 concentration is influenced by the chemistry of oxides of nitrogen (NOx
 ) and volatile organic compounds (VOCs). VOCs namely benzene\, toluene\, e
 thylene and xylene (BTEX) were found recorded at the highest concentration
  near roadsides. The concentrations of major air pollutants were reduced d
 uring the COVID-19 lockdown except for O3.
LOCATION:https://us02web.zoom.us/j/88446733633?pwd=UVZDWjZJaVg1UHZwS2tlRFp
 yTm5IZz09
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