Highly time-resolved characterization of water-soluble inorganic ions in PM2.5 in a humid and acidic mega city in Sichuan Basin, China

2017 ◽  
Vol 580 ◽  
pp. 224-234 ◽  
Author(s):  
Mi Tian ◽  
HuanBo Wang ◽  
Yang Chen ◽  
LeiMing Zhang ◽  
GuangMing Shi ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Inorganic Ions ◽  
Water Soluble ◽  
Time Resolved ◽  
Water Soluble Inorganic Ions

scholarly journals Characteristics and Sources of Water-Soluble Ions in PM2.5 in the Sichuan Basin, China

Atmosphere ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 78 ◽  
Author(s):  
Yuan Chen ◽  
Shao-dong Xie ◽  
Bin Luo ◽  
Chongzhi Zhai
Keyword(s):  
Sichuan Basin ◽  
Seasonal Pattern ◽  
Inorganic Ions ◽  
Principal Component ◽  
Water Soluble ◽  
Heterogeneous Reactions ◽  
Particulate Pollution ◽  
Soluble Ions ◽  
Water Soluble Inorganic Ions ◽  
Autumn And Winter

To track the particulate pollution in Sichuan Basin, sample filters were collected in three urban sites. Characteristics of water-soluble inorganic ions (WSIIs) were explored and their sources were analyzed by principal component analysis (PCA). During 2012–2013, the PM2.5 concentrations were 86.7 ± 49.7 μg m−3 in Chengdu (CD), 78.6 ± 36.8 μg m−3 in Neijiang (NJ), and 71.7 ± 36.9 μg m−3 in Chongqing (CQ), respectively. WSIIs contributed about 50% to PM2.5, and 90% of them were secondary inorganic ions. NH4+ and NO3− roughly followed the seasonal pattern of PM2.5 variations, whereas the highest levels of SO42− appeared in summer and autumn. PM2.5 samples were most acidic in autumn and winter, but were alkaline in spring. The aerosol acidity increased with the increasing level of anion equivalents. SO42− primarily existed in the form of (NH4)2SO4. Full neutralization of NH4+ to NO3− was only observed in low levels of SO42− + NO3−, and NO3− existed in various forms. SO42− and NO3− were formed mainly through homogeneous reactions, and there was the existence of heterogeneous reactions under high relative humidity. The main identified sources of WSIIs included coal combustion, biomass burning, and construction dust.

Characterization of water-soluble inorganic ions in size-segregated aerosols in coastal city, Xiamen

2011 ◽  
Vol 99 (3-4) ◽  
pp. 546-562 ◽  
Author(s):  
Jinping Zhao ◽  
Fuwang Zhang ◽  
Ya Xu ◽  
Jinsheng Chen
Keyword(s):  
Inorganic Ions ◽  
Water Soluble ◽  
Coastal City ◽  
Water Soluble Inorganic Ions

Characterization of major water-soluble inorganic ions in size-fractionated particulate matters in Shanghai campus ambient air

2004 ◽  
Vol 38 (2) ◽  
pp. 227-236 ◽  
Author(s):  
Guangli Xiu ◽  
Danian Zhang ◽  
Jizhang Chen ◽  
Xuejuan Huang ◽  
Zhixiang Chen ◽  
...  
Keyword(s):  
Inorganic Ions ◽  
Ambient Air ◽  
Water Soluble ◽  
Particulate Matters ◽  
Water Soluble Inorganic Ions

Highly size-resolved characterization of water-soluble inorganic ions in submicron atmospheric particles

2019 ◽  
Vol 12 (6) ◽  
pp. 683-692 ◽  
Author(s):  
Qinghua Zhou ◽  
Jie Wang ◽  
Wenwen Yan ◽  
Kaijie Tang ◽  
Xiaoyue Sun ◽  
...  
Keyword(s):  
Inorganic Ions ◽  
Atmospheric Particles ◽  
Water Soluble ◽  
Water Soluble Inorganic Ions

Long-term characterization of major water-soluble inorganic ions in PM10 in coastal site on the Japan Sea

2011 ◽  
Vol 68 (4) ◽  
pp. 299-316 ◽  
Author(s):  
Yong-tao Guo ◽  
Jing Zhang ◽  
Shi-gong Wang ◽  
Feng She ◽  
Xu Li
Keyword(s):  
Inorganic Ions ◽  
Japan Sea ◽  
Water Soluble ◽  
Coastal Site ◽  
The Japan Sea ◽  
Water Soluble Inorganic Ions
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