大学物理 ›› 2012, Vol. 31 ›› Issue (9): 53-53.

• 著者文摘 • 上一篇    下一篇

一种冲击分离式颗粒浓度测量装置的设计

郑灶松 朱永鹏 彭力 肖亮松   

  1. 华南师范大学物理与电信工程学院,广东广州510006
  • 出版日期:2012-09-25 发布日期:2012-09-20

A design of impact-separated device used to measure the particle concentration

  • Online:2012-09-25 Published:2012-09-20

摘要: 为测量大气中颗粒物的粒度浓度,本文在传统的冲击采样原理的基础上设计出冲击式分级装置,并对其进行严格定标;运用消光法原理对分级后的样品进行测量,利用反射镜增大光程提高装置测量灵敏度,实现了对大气中0~5μm、5~20μm、15~40μm三个粒径区间的数量密度和质量浓度的准确测量.

关键词: 粒度浓度, 冲击式分级, 定标, 消光法

Abstract: To achieve measurements of the atmospheric particle concentration, we design an impact-type clas-sified device based on the traditional impact of sampling theory and calibrated exactly. The extinct principle is used to particle samples which had been classified, and enhances the sensitivity of the measurement device by using re-flectors to increase the optical path. Finally, we realize the exact measurement of the grain concentrations of three particle ranges: 0~5μm,5~20μm and 15~40μm in the atmosphere.

Key words: grain concentrations, impact-type classify, calibrate, extinct principle

中图分类号: 

  • O436