极地研究

极地研究 ›› 2011, Vol. 22 ›› Issue (3-English): 165-174.DOI: 10.3724/SP.J.1085.2011.00165

• 研究论文 • 上一篇    下一篇

Chemical composition of marine aerosols of the 26th Chinese National Antarctic Research Expedition

XU GuoJie1,2,CHEN LiQi1,2,ZHANG YuanHui1,2,WANG JianJun1,2,LI Wei1,2,LIN Qi1,2   

  • 收稿日期:2011-07-22 修回日期:2011-08-10 出版日期:1961-09-30 发布日期:1961-09-30
  • 通讯作者: CHEN LiQi

Chemical composition of marine aerosols of the 26th Chinese National Antarctic Research Expedition

XU GuoJie1,2,CHEN LiQi1,2,ZHANG YuanHui1,2,WANG JianJun1,2,LI Wei1,2,LIN Qi1,2   

  1. 1 Key Laboratory of Global Change and Marine-Atmospheric Chemistry, SOA
    2 Third Institute of Oceanography, SOA
  • Received:2011-07-22 Revised:2011-08-10 Online:1961-09-30 Published:1961-09-30
  • Contact: CHEN LiQi

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摘要：

Aerosol samples collected during the 26th Chinese National Antarctic Research Expedition were analyzed for the concentration, composition and forms of selected ions. The sources for all ions were explored. The results showed that Cl-, Na+, SO42-, NO3-, and Mg2+ were the uppermost ion components. Sea salt particle is the primary component of aerosols, and sulfate aerosol is the second major aerosol component. Ammonium as a secondary aerosol existed in the forms of NH4NO3, NH4HSO4, and (NH4)2SO4. The sea salt concentrations showed the peak at 40oS，which may correlate with the wind speed. The concentrations of methane sulfonic acid (MSA) increased from the low latitudes to high latitudes, possibly caused by air temperature change and the oxidation process of DMS in Southern Ocean. Correlation analysis and factor analysis were used to investigate possible sources of these ions. The results showed that Cl-, Br-, Na+, K+, Mg2+, and Ca2+ came mostly from marine sources; F-, NO3-, and NH4+ mostly were from anthropogenic sources; MSA mostly was from marine biogenic sources; The concentrations of SO42- was influenced by both marine and anthropogenic sources.

关键词: 第26次南极科学考察

Abstract:

Aerosol samples collected during the 26th Chinese National Antarctic Research Expedition were analyzed for the concentration, composition and forms of selected ions. The sources for all ions were explored. The results showed that Cl-, Na+, SO42-, NO3-, and Mg2+ were the uppermost ion components. Sea salt particle is the primary component of aerosols, and sulfate aerosol is the second major aerosol component. Ammonium as a secondary aerosol existed in the forms of NH4NO3, NH4HSO4, and (NH4)2SO4. The sea salt concentrations showed the peak at 40oS，which may correlate with the wind speed. The concentrations of methane sulfonic acid (MSA) increased from the low latitudes to high latitudes, possibly caused by air temperature change and the oxidation process of DMS in Southern Ocean. Correlation analysis and factor analysis were used to investigate possible sources of these ions. The results showed that Cl-, Br-, Na+, K+, Mg2+, and Ca2+ came mostly from marine sources; F-, NO3-, and NH4+ mostly were from anthropogenic sources; MSA mostly was from marine biogenic sources; The concentrations of SO42- was influenced by both marine and anthropogenic sources.

Key words: Soluble ions, MSA, Southern Ocean, 26th Chinese National Antarctic Research Expedition