Characteristics Of The Particulate Matter In
Riyadh City, Saudi Arabia
Author(s)
A. S. Modaihsh and M. O. Mahjoub
Abstract
Increased concern about the impact of the so-called particulate matter on air
quality and public health has occurred in recent years. This concern is based on
the increased knowledge on the impact the smallest particles have on human
health. The primary goal of this study is to carry out a comprehensive
characterization of Riyadh bio-aerosol and aerosol samples of PM1, and PM2.5
and provide the scientific background for the further control of air pollution at
Riyadh and to develop effective strategies to reduce the ambient concentrations
of PM and reduce the deposition of this pollutant to the city. Real time ambient
air quality was monitored at Riyadh airport. Mass concentrations of PM2.5 and
PM10 (particulate matter smaller than 2.5 and 10 μm in diameter, respectively)
for January–April were measured. The concentrations of coarse (PM10), and fine
(PM2.5) particulate matter were measured using a Grimm model EDM 365
aerosol spectrometer. Measurement of particulate matter concentrations were
obtained at time intervals ranging from 1 s to 60 min. Measurement of
particulates was done via laser-light scattering. The counts from each size
classification are then converted to mass by a well-established equation. Results
indicated that temporal variation observed either for PM10 or PM2.5. was
associated mainly with the dust events. There is no significant temporal variation
of influential metrological parameters. The ratio between PM10 and PM2.5 were
found to be 0.25. Statistical analysis has shown a strong positive correlation
between them.
Keywords: PM10, PM2.5, dust storms, meteorological data, Saudi Arabia,
Riyadh.
Keywords
Keywords: PM10, PM2.5, dust storms, meteorological data, Saudi Arabia,
Riyadh.
Related Book
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