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.
In light of the interest that this class of atmospheric compounds currently attracts, the responseof temperature on aerosol particle concentration was reviewed, through changing the temperaturecontrolling method based on the Wide-range Particle Spectrometer（WPS）. Firstly, the temperature ofthe sampling system of the wide range particle spectrometer is changed by the switching of the tantalumtube heater and the non - heating temperature control system. With the improving sampling system, theambient and room aerosol were detected. According to the distribution of atmospheric aerosol at differenttemperatures, the distribution of atmospheric aerosol is discussed and analyzed. Results show thatcompared with the room aerosol, the peak value of the number concentration for ambient aerosol isobviously larger than the room air, which means there are more large diameter particles in ambientaerosol. This research will lay the basis that Wide-range Particle Spectrometer is very suitable for thedetection of aerosol, and provide a scientific basis for the detection of atmospheric aerosol pollution.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2016年第5期149-153,共5页
Acta Photonica Sinica
基金
国家自然科学基金(No.11404039)
教育部第46批留学回国人员科研启动基金(No.[2013]693)资助~~
关键词
光谱探测
环境检测
温度控制
宽范围粒径谱仪
大气气溶胶
Spectrum detection
Environmental monitoring
Temperature control
Wide-range particle SPectrometer
Atrnrnhoric aerosol
