Chinese Journal of Polar Research

ADVANCES IN POLAR SCIENCE ›› 2005, Vol. 16 ›› Issue (1-English): 1-12.

• Contents •     Next Articles

Soluble species in aerosols collected on the route of the Second Chinese National Arctic Research Expedition

 Xu Jianzhong1, Sun Junying1,2, Ren Jiawen1 and Qin Dahe1   

  1. 1 Joint Key Laboratory of Cryosphere and Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2 Key Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing 100081, China

  • Online:1955-03-30 Published:1955-03-30
  • Contact: Xu Jianzhong

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Abstract:

Aerosol samples are collected on the route of the Second Chinese National Arctic Research Expedition from July 15 to September 28, 2003.The concentration of water soluble ions (Na+, NH4+, Ca2+, Cl-, MSA, SO42- and so on) are analyzed. By correlation analysis,the ions can be divided into three groups: (1) Na+, Mg2+, K+, Ca2+, Cl-, SO42-, mainly from sea salt; (2) NH4+, NO3-,markedly from coastal regions of the continents; (3)Acetate, MSA, C2O42-, from other sources.Marine aerosols are the dominant origin, Cl- and Na+ are the most dominant anion and cation, respectively and these two ions (Na++Cl- account for 55.6% of the total aerosol loading. The mean equivalence ratio of NH4+/SO42- is 0.45, we suggest that ammonium and sulfate exist mainly as NH4HSO4. The concentration of NO3- shows three different patterns on the route of expedition: Japan Sea with median value of 15.2 neq·m-3; Sea of Okhostk and Bering Sea of 1.8 neq·m-3 and Arctic Ocean of 0.4 neq·m-3. Bering Sea is a high MSA area. Through the comparison of the concentration of main water soluble ions between the First and Second Chinese National Arctic Research Expedition,the variation matches each other.

Key words: Marine acrosol, Arctic, Soluble species, MSA