TY - JOUR
T1 - The PM2.5 and PM10 particles in urban areas of Taiwan
AU - Chen, Mei Lien
AU - Mao, I. Fang
AU - Lin, I. Kai
N1 - Funding Information:
The authors would like to thank the Environmental Protection Agency of the Republic of China for financially supporting this research.
PY - 1999/2/9
Y1 - 1999/2/9
N2 - This study conducted an atmospheric aerosol sampling to measure the PM10 (particles <10 μm in aerodynamic diameter) and PM2.5 (particles <2.5 μm in aerodynamic diameter) mass concentrations from October 1996 to June 1997 in northern (Taipei), central (Taichung) and southern (Kaohsiung), the three largest cities of Taiwan. Seventy-eight samples were obtained to measure the mass concentrations of PM10 and PM2.5 from nine sampling sites. According to those results, the PM10 mass concentrations in Taipei, Taichung and Kaohsiung were 42.19, 60.99 and 77.10 μg/m3, respectively. The corresponding PM2.5 mass concentrations were 23.09, 39.97 and 48.47 μg/m3, respectively. The PM2.5 fraction accounted for 61-67% of the PM10 mass in central and southern Taiwan, but was lower (54-59%) in northern Taiwan. Some samples in which the PM2.5 fraction was overwhelmingly dominant could reach as high as 80-95% of the PM10 mass. In addition, the PM2.5, PM10 levels and PM2.5/ PM10-2.5 (particles with aerodynamic diameters ranging from 2.5 to 10 μm) ratios in metropolitan Taiwan significantly fluctuated from site-to-site and over time. Moreover, ambient daily PM2.5 and PM10-2.5 mass concentrations did not correlate well with each other at most of the sampling sites, indicated that they originated from different kinds of sources and emitted variedly over time. Copyright (C) 1999 Published by Elsevier Science B.V. All rights reserved.
AB - This study conducted an atmospheric aerosol sampling to measure the PM10 (particles <10 μm in aerodynamic diameter) and PM2.5 (particles <2.5 μm in aerodynamic diameter) mass concentrations from October 1996 to June 1997 in northern (Taipei), central (Taichung) and southern (Kaohsiung), the three largest cities of Taiwan. Seventy-eight samples were obtained to measure the mass concentrations of PM10 and PM2.5 from nine sampling sites. According to those results, the PM10 mass concentrations in Taipei, Taichung and Kaohsiung were 42.19, 60.99 and 77.10 μg/m3, respectively. The corresponding PM2.5 mass concentrations were 23.09, 39.97 and 48.47 μg/m3, respectively. The PM2.5 fraction accounted for 61-67% of the PM10 mass in central and southern Taiwan, but was lower (54-59%) in northern Taiwan. Some samples in which the PM2.5 fraction was overwhelmingly dominant could reach as high as 80-95% of the PM10 mass. In addition, the PM2.5, PM10 levels and PM2.5/ PM10-2.5 (particles with aerodynamic diameters ranging from 2.5 to 10 μm) ratios in metropolitan Taiwan significantly fluctuated from site-to-site and over time. Moreover, ambient daily PM2.5 and PM10-2.5 mass concentrations did not correlate well with each other at most of the sampling sites, indicated that they originated from different kinds of sources and emitted variedly over time. Copyright (C) 1999 Published by Elsevier Science B.V. All rights reserved.
KW - Atmospheric aerosol
KW - Metropolitan Taiwan
KW - PM
KW - PM
UR - http://www.scopus.com/inward/record.url?scp=0032588318&partnerID=8YFLogxK
U2 - 10.1016/S0048-9697(98)00407-0
DO - 10.1016/S0048-9697(98)00407-0
M3 - Article
C2 - 10085569
AN - SCOPUS:0032588318
SN - 0048-9697
VL - 226
SP - 227
EP - 235
JO - Science of the Total Environment
JF - Science of the Total Environment
IS - 2-3
ER -
