TY - JOUR
T1 - Chemical characteristics of submicron particulates (PM1.0) in Wuhan, Central China
AU - Lyu, Xiao-Pu
AU - Wang, Zu-Wu
AU - Cheng, Hai-Rong
AU - Zhang, Fan
AU - Zhang, Gan
AU - Wang, Xin-Ming
AU - Ling, Zheng-Hao
AU - Wang, Nan
N1 - Funding Information:
This work was supported by the Natural Science Foundation of China (NSFC) (Grant No. 41103061 ), Open Foundation of Hubei Key Laboratory of Industrial Fume & Dust Pollution Control, Jianghan University (Grant No. HBIK2014-02 ), and the national 973 Program (Grant No. 2011CB707106 ). The authors are grateful for the National Oceanic and Atmospheric Administration's Air Resources Laboratory for providing the HYSPLIT transport model and the READY website ( http://www.arl.noaa.gov/ready.html ).
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/7
Y1 - 2015/7
N2 - Submicron particulate matter (PM1.0) samples were collected at a suburban site in Wuhan from Sept., 2012 to Aug., 2013. Concentration, composition, potential sources and acidity of the PM1.0 were investigated. The results indicated that the annual average concentration of PM1.0 was 81.7μg/m3, with the highest and lowest values occurring in winter and summer, respectively. Inorganic water soluble ions constituted 48.9% of the PM1.0, and dominated by secondary species in the form of NH4NO3 and NH4HSO4. The high concentration of Pb (128.4ng/m3) and greatly enriched Pb, Cd and Se in PM1.0 indicated contribution of coal combustion to PM1.0. Ratios of SO42-/NO3- (1.3) and Cl-/Na+ (2.7) revealed the dominant stationary emissions, further confirming the coal combustion source in Wuhan. According to the chemical and meteorological analyses, biomass burning and stagnant weather were proposed to be the main causes to the haze episodes in autumn and winter, respectively.
AB - Submicron particulate matter (PM1.0) samples were collected at a suburban site in Wuhan from Sept., 2012 to Aug., 2013. Concentration, composition, potential sources and acidity of the PM1.0 were investigated. The results indicated that the annual average concentration of PM1.0 was 81.7μg/m3, with the highest and lowest values occurring in winter and summer, respectively. Inorganic water soluble ions constituted 48.9% of the PM1.0, and dominated by secondary species in the form of NH4NO3 and NH4HSO4. The high concentration of Pb (128.4ng/m3) and greatly enriched Pb, Cd and Se in PM1.0 indicated contribution of coal combustion to PM1.0. Ratios of SO42-/NO3- (1.3) and Cl-/Na+ (2.7) revealed the dominant stationary emissions, further confirming the coal combustion source in Wuhan. According to the chemical and meteorological analyses, biomass burning and stagnant weather were proposed to be the main causes to the haze episodes in autumn and winter, respectively.
KW - Enrichment factor
KW - Haze
KW - PM1.0
KW - Secondary aerosol
KW - Source identification
KW - Water soluble inorganic ions
UR - http://www.scopus.com/inward/record.url?scp=84929164086&partnerID=8YFLogxK
U2 - 10.1016/j.atmosres.2015.04.009
DO - 10.1016/j.atmosres.2015.04.009
M3 - Journal article
AN - SCOPUS:84929164086
SN - 0169-8095
VL - 161-162
SP - 169
EP - 178
JO - Atmospheric Research
JF - Atmospheric Research
ER -