大气与环境光学学报 ›› 2014, Vol. 9 ›› Issue (6): 435-440.

• 大气光学 • 上一篇    下一篇

气溶胶细粒子谱校正方法的实验研究

李珍珍1,2, 王珍珠1, 徐学哲2,3, 黄印博1*   

  1. (1 中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室,安徽 合肥 230031; 
    2 中国科学院大学,北京 100039; 
    3 中国科学院安徽光学精密机械研究所中国科学院大气物理化学实验室,安徽 合肥 230031)
  • 收稿日期:2014-04-15 修回日期:2014-05-06 发布日期:2014-11-14
  • 通讯作者: 李珍珍(1989-),女,安徽淮北人,研究生,现主要从事大气气溶胶光学特性研究。 E-mail:zzli@mail.ustc.edu.cn
  • 作者简介:李珍珍(1989-),女,安徽淮北人,研究生,现主要从事大气气溶胶光学特性研究。
  • 基金资助:

    安徽省自然科学基金面上项目(1308085MD53)、国家973计划项目(2013CB955802)资助

Experimental Research on Corrcting Method of Fine Aerosol Particle

LI Zhen-zhen1,2, WANG Zhen-zhu1, XU Xue-zhe2,3, HUANG Yin-bo1*   

  1. (1 Key Laboratory of Atmospheric Composition and Optical Radiation,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Hefei 230031, China; 
    2 Graduate University of Chinese Academy of Sciences, Beijing 100039, China; 
    3 Key Laboratory of Atmospheric Physics and Chemistry, Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Hefei 230031, China)
  • Received:2014-04-15 Revised:2014-05-06 Online:2014-11-14

摘要:

利用Gilibrator-2电子皂膜流量计对扫描电迁移率粒径分析仪(scanning mobility particle sizer, SMPS)的系统流量进行了校正研究,同时利用气溶胶发生器对SMPS测量粒径的准确度进行了检测。结果表明:校正SMPS系统流量前,其样流和鞘流的面板显示值与实际值存在偏差。用标准粒径200 nm的聚苯乙烯乳胶球发生气溶胶,得到校正面板流量前后SMPS的峰值直径分别为274.3 nm和198.7 nm,测量结果与标准粒径的偏差从36.1%降低到2.1%,校正后可以实现准确测量。对比分析了校正流量前后SMPS谱分布和数浓度的变化情况以说明校正的必要性。

关键词: 大气光学, 气溶胶, 粒子谱分布, 流量校正

Abstract:

By using Gilibrator - 2 electronic soap film flowmeter, the system flow of scanning mobility particle sizer (SMPS) was calibrated. Aerosol generator was also used to test the accuracy of measuring particle size. The result indicates that before the system flow of SMPS was calibrated, there is a deviation between the values of sample flow and sheath flow on SMPS panel and the correspondingly actual values of them. The diameter in peak is 274.3 nm before the flow on panel is calibrated. Measuring diameter in peak of aerosol particles is 198.7 nm after calibration. The deviation between standard size and measuring result reduces from 36.1% to 2.1%. Size distribution and number concentration of aerosols were also compared and analyzed before and after the SMPS flow was calibrated.

Key words: atmospheric optics, aerosol, particle size distribution, flow calibration

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