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Comparative Evaluation of Gravimetric Measurement Samplers for Fine Particles by Sampling Flow Rates and Meteorological Conditions
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 Title & Authors
Comparative Evaluation of Gravimetric Measurement Samplers for Fine Particles by Sampling Flow Rates and Meteorological Conditions
Yang Won Ho; Kim Dae Won; Kim Jin Kuk; Yoon Chung Sik; Heo Yong; Lee Bu Yong;
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Several samplers using gravimetric methods such as high-volume air sampler, MiniVol portable sampler, personal environmental monitor(PEM) and cyclone were applied to determine the concentrations of fine particles in atmospheric condition. Comparative evaluation between high-volume air sampler and Minivol portable sampler for , and between Minivol portable sampler and PEM was undertaken from June, 2003 to January 2004. Simultaneously, meteorological conditions such as wind speed, wind direction, relative humidity and temperature was measured to check the factors affecting the concentrations of fine particles. In addition, particle concen­trations by cyclone with an aerodynamic diameter of were measured. Correlation coefficient between high­volume air sampler and portable air sampler for was 0.79 (p<0.001). However, the mean concentration for by high-volume air sampler was significantly higher than that by Minivol portable sampler (p=0.018). Correlation coefficient between Minivol portable sampler and PEM for as 0.74 (p<0.001), and the measured mean concentrations for did not show significant difference. Difference of the measured con­centrations of fine particle might be explained by wind speed and humidity among meteorological conditions. Particle concentration differences by measurement samplers were proportional to the wind speed, but inversely proportional to the relative humidity, though it was not a significant correlation.
Fine particles;Gravimetric sampling;Meteorological factors;
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