北京大气气溶胶小颗粒的测量与解析

Measurement and Analysis for Atmospheric Aerosol Particulates in Beijing

本项研究是对空气动力学直径小于２．５μｍ的气溶胶粒子进行测量分析。为此在北京设立２个采样点，分别从１９８９年４月３０日到１９８９年５月１６日和从１９８９年５月２０日到１９９０年５月１４日进行采样。样品用热光碳分析仪分析其中的有机碳（ＯＣ）和元素碳（ＥＣ），用Ｘ射线荧光光谱仪分析其中的２８种元素，用离子色谱分析其中的，表征了北京大气中小颗粒气溶胶的化学特征。对所得的数据用化学质量平衡模式（ＣＭＢ）法进行处理，得出了各种污染源对气溶胶小颗粒的贡献率。

To deterrnine and analyze the fine partioulate aerosol with aero-dynamic diametersmaller than 2.5μm, samples were collected at two sites in Beijing. At one site,sampling wasfrorn April 30 to May 16,1989;at the other site,from May 20,1989 to May 14,1990.thesam6les were analyzed by optical carbon analysis for organic carbon(OC)and elemental carbon(EC)and by X-ray fluoresecence analysis for 28 elements characteristic of the fine particulateaerosol in Beijing. All the data were calculated by chemical mass balance method(CMB)and the various contribution to fine particulate aerosol.