摘要
气溶胶样品采自中国广东上川岛的海洋大气中,采集时通过一个二级粒子撞击器把粒子分为2部分:粗大粒子(r>1.0μm)和微小粒子(1.0μm≥r>0.2μm),利用复合薄膜法和电子显微镜检测甲磺酸粒子.结果表明上川岛海洋大气中有甲磺酸粒子的存在,其数量浓度在0 nmol/m3和0.5 nmol/m3之间变化,并且甲磺酸粒子主要存在于粗大粒子中和较高湿度的条件下.
Aerosol samples were collected from coastal atmosphere of Shangchuan Island in Guangdong, China. Atmospheric particles were size-fractionated into two size ranges： coarse particles（r〉1. 0μm） and fine particles（1.0 μm≥r〉0. 2μm）. Presence of Methane Sulfonic Acid （MSA） in individual particles was determined with an electron microscope using multi- ple thin film method. It was found that there is MSA particle in the coastal atmosphere （the number concentration of MSA particles varied about from 0 nmol/m^3 to 0.5 nmol/m^3）, and that MSA-containing particles existed mainly in the coarse size range and under high humid conditions.
出处
《陕西科技大学学报（自然科学版）》
2007年第3期82-84,共3页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金(29777009)
国家自然科学基金(20077009)
广东省自然科学基金(04020023)
关键词
甲磺酸
单个粒子
复合薄膜法
上川岛
Methane Sulfonic Acid
individual particle
multiple thin film method
Shangchuan Island
