广州气溶胶质量谱与水溶性成分谱的年变化特征  

INTRA-ANNUAL VARIATION FEATURES OF MASS DISTRIBUTION AND WATER SOLUBLE COMPOSITION DISTRIBUTION OF ATMOSPHERIC AEROSOLS OVER GUANGZHOU

作　　者：吴兑[1] 陈位超[1] 

机构地区：[1]广州热带海洋气象研究所

出　　处：《气象学报》1994年第4期499-505,共7页Acta Meteorologica Sinica

基　　金：国家气象局气象科学基金

摘　　要：广州气溶胶质量谱与水溶性成分谱的年变化特征吴兑，陈位超（广州热带海洋气象研究所，广州，５１００８０）近年来，我们曾在粤、桂、琼三省华南广大地区采集并分析了大气气溶胶分级样品，从气溶胶参与雨水酸化过程，吸湿性气溶胶作为凝结核的作用，以及海岸地带吸湿性粒...Abstract An Andersen particle sampler (Model 20-709) was used for the collection and measurement of atmospheric total aerosol samples in Guangzhou during May 1988 to April 1989.The mass distribution of total aerosol and the distribution of fluorine, chlorine. nitric. sulphuric, sodium. ammonia. potassium. calcium. magnesium ions of water soluble were analyzed. The results show that the concentration of aerosol are lower in rainy seasons than those in dry seasons in Guangzhou. The concentration of sulphuric and calcium ions that are soluble in water are the largest in each month of the year. The mass distribution of total aerosol exhibits a triseak distribution. on the other hand. The distribution of water soluble composition is diversified. the magnesium. nitric. potassium and fluorine ions mostly exhibit triseak distribution. and the calcium ions are mainly bimodally distributed, and the chlorine and sodium ions are of quasi-unimodal distribution. the sulphuric ions are enriched greatly in Guangzhou, especially in rainy seasons. The m. m. d are larger in rainy seasons than in dryseasons, the same being true total aerosol and water soluble composition. The sulphuric is the most important canon in aerosols in Guangzhou. but concentration of nitric ions is very low, different from those observed in rain water. There are free acid in aerosols in Guangzhou in most of the year, especially in rainy season. causing aerosol to show neutral or weak acidity.It accounts for easy formation of acidrain in Guangzhou.

关 键 词：气溶胶 质量谱 水溶性 成分谱 年变化 

分 类 号：P513[天文地球—地质学]