【作者】 杨传俊； 张元勋； 陆文忠； 杨永兴； 张桂林； 李燕；

【Author】 YANG Chuan-jun, ZHANG Yuan-xun, LUWen-zhong, YANG Yong-xin, ZHANG Gui-lin, LI Yan (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China)

【机构】 中国科学院上海应用物理研究所；

【摘要】 为了更深入地研究上海大气气溶胶微小颗粒物的物理和化学特性,本项工作采用MSP公司生产的WPSTM Model 1000XP宽范围粒径谱仪,测量粒径介于10-10000 nm的气溶胶纳米颗粒物,探讨粒径在10-500 nm间的气溶胶纳米颗粒物随时间、高度和地区变化的时空分布特征．结果表明,总质量浓度随时间的变化比总粒子数浓度的变化滞后,纳米颗粒物总粒子数浓度和质量浓度随高度增加呈指数衰减．纳米颗粒物总粒子数浓度和质量浓度在工业区和商业区较高,而在生活区和郊区较低．超细颗粒对粒子数浓度贡献较大,而细颗粒对粒子质量浓度贡献较大．更多还原

【Abstract】 In order to study the physical and chemical characterization of aerosol nanoparticulate in Shanghai city, the wide range particle spectrometer (Model 1000XP WPS) produced by MSP Corporation was used to measure the aerosol particulate size ranging from 10 to 10000 nm in December of 2005. The results showed that the distribution of particulates in a size range from 10 to 500 nm was variable with time, height and district. It was found that the change of mass concentration varying with time was later than that of number concentration. Both concentrations of particulate matter presented the exponential decay with the height increasing. Also, they were higher in industrial area and shopping center but lower in living district and suburb. The results indicated that the superfine matter (<100 nm) mainly contributed to number concentration, and the fine matter (>100 nm) mainly contributed to mass concentration.更多还原