Characteristics of water-soluble inorganic ions in atmospheric aerosols in Shenyang

被引：2
|
作者：
Miao H.-Y. [1 ,2 ]
Wen T.-X. [1 ]
Wang L. [1 ]
Xu H. [3 ]
机构：
[1] State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing
[2] China Meteorological Administration Training Center Liaoning Branch, Shenyang
[3] Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang
来源：
Wen, Tian-Xue (wtx@dq.cern.ac.cn) | 2017年 / Science Press卷 / 37期
关键词：
Backward trajectory; Clean days; Pollution days; Seasonal variation; Shenyang; Water-soluble inorganic ions;
D O I：
10.13227/j.hjkx.2016.06.003
中图分类号：
学科分类号：
摘要：
To investigate the levels and seasonal variation of water soluble inorganic components in ambient aerosol in Shenyang, 25 samples were collected with Andersen cascade sampler from Jun. 2012 to May. 2013 and nine water-soluble ions in samples were analyzed by IC. The different characteristics of aerosols between clean and pollution days in winter were discussed based on these samples. The results showed that the annual concentrations of total water soluble inorganic ions were 22.30 μg·m-3 and 14.29 μg·m-3 in fine and coarse particles, and SO42- and Ca2+ were the most abundant ions, respectively. The ratio of mass concentration between SO42- and NO3- was 2.28 and the NH4+ existed in the form of (NH4)2SO4 and NH4NO3 in fine particles. The concentrations of total water soluble ions in fine particles were higher in winter and spring compared with those in summer and autumn, and they varied significantly between different seasons. The fossil fuel consumption led to the maximum values of secondary inorganic ions in fine particles during winter. The concentrations of total water soluble ions in coarse particles varied slightly though they were higher in autumn and lower in winter, and the wind-drifting sand was responsible for the higher concentration of Ca2+ in autumn in coarse particles. The concentration of SO42-, NO3-, NH4+ accounted for 80% of total water soluble inorganic ions during clean days and rose to 94% during pollution days. The ions were mostly concentrated in the size ranges of 0.43-0.65 μm and 0.43-2.1 μm respectively during clean and pollution days in fine mode. The peaks of SO42-, NO3-, NH4+ in fine mode shifted from 0.43-0.65 μm to 1.1-2.1 μm, which meant these ions were transformed from condensing mode to droplets mode during pollution days. The air mass produced at Lake Baikal and transported through high altitude to the sampling point caused clean days, however the air mass transported through industrial areas might bring pollutions to the sampling point then caused pollution days. © 2016, Science Press. All right reserved.
引用
收藏
页码：2017 / 2024
页数：7
相关论文
共 15 条
  • [1] Calvo A.I., Alves C., Castro A., Et al., Research on aerosol sources and chemical composition: Past, current and emerging issues, Atmospheric Research, 120-121, pp. 1-28, (2013)
  • [2] Charlson R.J., Schwartz S.E., Hales J.M., Et al., Climate forcing by anthropogenic aerosols, Science, 255, 5043, pp. 423-430, (1992)
  • [3] Wilson R., Spengler J.D., Particles in Our Air: Concentrations and Health Effects, (1996)
  • [4] Xin J.Y., Wang Y.S., Pan Y.P., Et al., The campaign on atmospheric aerosol research network of China: CARE-China, Bulletin of the American Meteorological Society, 96, 7, pp. 1137-1155, (2015)
  • [5] Lin C.C., Fang G.C., Liu S.L., Et al., Review of atmospheric particulate mass and soluble ions concentrations from Korea, China, Spain, Italy, and Japan During 2000-2010, Environmental Forensics, 12, 2, pp. 124-133, (2011)
  • [6] Che H.Z., Zhang X.Y., Li Y., Et al., Haze trends over the capital cities of 31 provinces in China, 1981-2005, Theoretical and Applied Climatology, 97, 3-4, pp. 235-242, (2009)
  • [7] Chan C.K., Yao X.H., Air pollution in mega cities in China, Atmospheric Environment, 42, 1, pp. 1-42, (2008)
  • [8] Quan J., Liu Q., Li X., Et al., Effect of heterogeneous aqueous reactions on the secondary formation of inorganic aerosols during haze events, Atmospheric Environment, 122, pp. 306-312, (2015)
  • [9] Tao J., Zhang L.M., Engling G., Et al., Chemical composition of PM<sub>2.5</sub> in an urban environment in Chengdu, China: Importance of springtime dust storms and biomass burning, Atmospheric Research, 122, pp. 270-283, (2013)
  • [10] Wang Y., Zhuang G.S., Sun Y.L., Et al., The variation of characteristics and formation mechanisms of aerosols in dust, haze, and clear days in Beijing, Atmospheric Environment, 40, 34, pp. 6579-6591, (2006)
12