TY - JOUR
T1 - Airborne fine particulate pollution in Jinan, China: Concentrations, chemical compositions and influence on visibility impairment
AU - Yang, Lingxiao
AU - Zhou, Xuehua
AU - Wang, Zhe
AU - Zhou, Yang
AU - Cheng, Shuhui
AU - Xu, Pengju
AU - Gao, Xiaomei
AU - Nie, Wei
AU - Wang, Xinfeng
AU - Wang, Wenxing
PY - 2012/8/1
Y1 - 2012/8/1
N2 - Daily PM2.5samples were collected simultaneously at an urban site (SD) and a rural site (MP) in Jinan, China from March 2006 to February 2007. The samples were analyzed for major inorganic and organic water-soluble ions, 24 elements and carbonaceous species to determine the spatial and temporal variations of PM2.5mass concentrations and chemical compositions and evaluate their contributions to visibility impairment. The annual average concentrations of PM2.5were 148.71μgm-3and 97.59μgm-3at SD and MP, respectively. The predominant component of PM2.5was (NH4)2SO4at SD and organic mass at MP, which accounted for 28.71% and 37.25% of the total mass, respectively. The higher SOR (sulfur oxidation ratio) and ratios of OC/EC at SD indicated that the formation of secondary inorganic ions and secondary organic aerosols (SOA) could be accelerated in the urban area. Large size (NH4)2SO4and large size organic mass were the most important contributors to visibility impairment at SD and MP, accounting for 43.80% and 41.02% of the light extinction coefficient, respectively.
AB - Daily PM2.5samples were collected simultaneously at an urban site (SD) and a rural site (MP) in Jinan, China from March 2006 to February 2007. The samples were analyzed for major inorganic and organic water-soluble ions, 24 elements and carbonaceous species to determine the spatial and temporal variations of PM2.5mass concentrations and chemical compositions and evaluate their contributions to visibility impairment. The annual average concentrations of PM2.5were 148.71μgm-3and 97.59μgm-3at SD and MP, respectively. The predominant component of PM2.5was (NH4)2SO4at SD and organic mass at MP, which accounted for 28.71% and 37.25% of the total mass, respectively. The higher SOR (sulfur oxidation ratio) and ratios of OC/EC at SD indicated that the formation of secondary inorganic ions and secondary organic aerosols (SOA) could be accelerated in the urban area. Large size (NH4)2SO4and large size organic mass were the most important contributors to visibility impairment at SD and MP, accounting for 43.80% and 41.02% of the light extinction coefficient, respectively.
KW - Chemical composition
KW - Mass closure
KW - PM 2.5
KW - Visibility impairment
UR - http://www.scopus.com/inward/record.url?scp=84860220392&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2012.02.029
DO - 10.1016/j.atmosenv.2012.02.029
M3 - Journal article
SN - 1352-2310
VL - 55
SP - 506
EP - 514
JO - Atmospheric Environment
JF - Atmospheric Environment
ER -