登录 | 注册 | 中文  | English  | 用时: 0.58s
元数据
高级检索
首页 > 中国极地考察知识库 > 成果信息库 > 已审查 Chemical composition of marine aerosols of the 26th Chinese National Antarctic Research Expedition

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

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

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

【DOI】10.3724/SP.J.1085.2011.00165

【作者】 徐国杰; 陈立奇; 张远辉; 王建军; 李伟

【Author】 Xu Guojie ; Chen Liqi ; Zhang Yuanhui ; Wang Jianjun ; Li Wei

【期刊】极地研究

【Journal】

【期刊年份】2011

【卷】22

【期】3

【关键词】

【Keywords】 Soluble ions; MSA; Southern Ocean; 26th Chinese National Antarctic Research Expedition

【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.

【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.

【基金/项目】 石羊河流域绿洲城市化的生态环境效应与调控对策研究-以武威市凉州区为例 ; 中美合作南大洋大气铁输入海洋通量研究

【下载】 PDF(811.7 KB)