METHODS
Comparison of PM10 Measurement Techniques
To compare the level of PM10 measured by the β-ray attenuation
method at the PCD monitoring station with that
obtained simultaneously by the personal sampler, a personal
air sampler was installed at the rooftop air inlet of
the Dindaeng roadside monitoring station. Six 12-hr aerosol
collections were performed and compared to the hourly
PCD data from the identical time period. The sampling
filters then were quantified by the gravimetric method.