中国台北大气气溶胶中可溶性阴离子观测个例研究  

Case Study of Water-Soluble Anionic Component of Aerosol in Taipei,China

作　　者：温天雪[1] 王跃思[1] 何新星[1] 

机构地区：[1]中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京100029

出　　处：《中国科学院研究生院学报》2006年第1期105-110,共6页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：国家自然科学基金项目(40222202);中国科学院全国优秀博士学位论文专项资金资助

摘　　要：选择2003年1月21日、2月18日和2月20日三个晚上为研究个例,观测了中国台北大气气溶胶中的可溶性阴离子的浓度变化,并利用后推气流轨迹模型结合离子质量分数和离子间相关性分析,研究了不同长距离输送过程对中国台北大气污染的影响.研究结果表明中国台北大气气溶胶中可溶性阴离子主要由Cl-、NO2-、NO3-和SO42-组成,其中SO24-占可溶性阴离子质量浓度的60%～90%,NO3-次之,占9%～22%,两者具有较强同源性;Cl-和NO2-所占比例较小,NO2-浓度不容忽视;海盐源气溶胶的长距离输送可以降低台北大气污染,沿海大陆地区气溶胶的长距离输送可能增加台北大气污染,沙尘气溶胶的输送不一定加重台北大气污染.Three days were selected to study the effect of different long-distance transportation on atmospheric pollution in Taipei, China. Concentration of water-soluble anion of aerosols in Taipei was measured. Back trajectory of air masses, mass ratio and sources of water-soluble anions were analyzed. The results showed that water-soluble anion of aerosol in Taipei was composed of Cl^- , NO2^- , NO3^- and SO4^2- . SO4^2- was the major component, which accounted for 60% -90% in mass,and then following is NO3^- which accounted for 9% -22% in mass. SO4^2- and NO3^- were likely from the same source. Concentration of NO2^- could not be ignored. Long-distance transportation of sea-salt aerosol could decrease atmospheric pollution in Taipei. However, long-distance transportation of aerosols from coastlands of China could increase atmospheric pollution in Taipei. Long-distance transportation of dust did not always increase atmospheric pollution in Taipei.

关 键 词：中国台北 可溶性阴离子 长距离输送 

分 类 号：P402[天文地球—大气物理学与大气环境]