Concentration of atmospheric particulates during a dust storm period in central Taiwan, Taichung.
In this study we monitored concentrations of particles in central Taiwan using PS-1 (GPS1 PUF Sampler) and Model 310 Universal Air Sampler (UAS) from 02/23/2001 to 03/12/2001 at two sampling sites. During this period, an Asian dust storm moved across central Taiwan from 3/3 to 3/6. The total ambient air particle concentrations during the dust storm period were than compared with previous data from this region. In general, the average total suspended particulate (TSP) concentration order was during dust storm period > after dust storm period > non-dust storm period at both HKITT (traffic) and THUC (rural) sampling sites. The ratio of PM2.5/PM10 was 60% before and after the dust storm period. However, this ratio was decreased to less than 50% during the dust storm. This demonstrates that the coarse particulate concentrations (PM2.5-10) increased during the dust storm period. In contrast the increase of ambient air particles concentrations after the Taiwan Chi-Chi Earthquake were mainly due to fine particles (PM2.5). And, the increased of ambient air particles concentrations after dust storm period were mainly coarse particle (PM2.5-10) concentrations in central Taiwan.
Fan
Guor-Cheng
GC
Air Toxic and Environmental Analysis Laboratory, Hungkuang Institute of Technology, Sha-Lu, Taichung, Taiwan, ROC. gcfang@sunrise.hkc.edu.tw
Chang
Cheng-Nan
CN
Wu
Yuh-Shen
YS
Lu
Shin-Chung
SC
Fu
Peter Pi-Cheng
PP
Chang
Shyh-Chyi
SC
Cheng
Chii-Dong
CD
Yuen
Win-Hsiao
WH