光子学报, 2016, 45 (5): 0501002, 网络出版: 2016-06-06   

基于宽范围粒径谱仪的气溶胶探测方法

Aerosol Detection Method Based on Wide-Range Particle Spectrometer
作者单位
常州大学 数理学院, 江苏 常州 213164
摘要
通过改变基于宽范围粒径谱仪的温度控制方法, 研究温度变化对气溶胶浓度的影响和作用.本文首先对宽范围粒径谱仪进样系统温度控制方法进行改进, 即采用钽管加热器及不加热切换的温度控制方法来改变宽范围粒径谱仪进样部分温度, 使用改进后的系统测量室内外大气气溶胶, 对不同温度下大气气溶胶的浓度分布情况进行讨论与分析.结果表明室外粒子数浓度分布的峰值与室内粒子浓度分布的峰值相比, 室内空气中粒子数浓度峰值明显要小, 即室外大气中的粒径大的粒子更多.证实了宽范围粒径谱仪适用于大气气溶胶的检测, 在环境检测中有广泛的应用前景.
Abstract
In light of the interest that this class of atmospheric compounds currently attracts, the response of temperature on aerosol particle concentration was reviewed, through changing the temperature controlling method based on the Wide-range Particle Spectrometer(WPS). Firstly, the temperature of the sampling system of the wide range particle spectrometer is changed by the switching of the tantalum tube heater and the non - heating temperature control system. With the improving sampling system, the ambient and room aerosol were detected. According to the distribution of atmospheric aerosol at different temperatures, the distribution of atmospheric aerosol is discussed and analyzed. Results show that compared with the room aerosol, the peak value of the number concentration for ambient aerosol is obviously larger than the room air, which means there are more large diameter particles in ambient aerosol. This research will lay the basis that Wide-range Particle Spectrometer is very suitable for the detection of aerosol, and provide a scientific basis for the detection of atmospheric aerosol pollution.

刘宪云, 方佳怡, 李磊, 元春梅. 基于宽范围粒径谱仪的气溶胶探测方法[J]. 光子学报, 2016, 45(5): 0501002. LIU Xian-yun, Fang Jia-yi, LI Lei, YUAN Chun-mei. Aerosol Detection Method Based on Wide-Range Particle Spectrometer[J]. ACTA PHOTONICA SINICA, 2016, 45(5): 0501002.

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