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基于腔减相移光谱技术测量大气气溶胶消光系数的应用研究

王强 钟琪 郭杰 于志伟 杨凯

王强, 钟琪, 郭杰, 于志伟, 杨凯. 基于腔减相移光谱技术测量大气气溶胶消光系数的应用研究[J]. 气候与环境研究, 2017, 22(1): 108-114. doi: 10.3878/j.issn.1006-9585.2016.16084
引用本文: 王强, 钟琪, 郭杰, 于志伟, 杨凯. 基于腔减相移光谱技术测量大气气溶胶消光系数的应用研究[J]. 气候与环境研究, 2017, 22(1): 108-114. doi: 10.3878/j.issn.1006-9585.2016.16084
Qiang WANG, Qi ZHONG, Jie GUO, Zhiwei YU, Kai YANG. An Application Study on Measurement of Atmospheric Aerosol Extinction Coefficient Based on Cavity Attenuated Phase Shift Spectroscopy Technique[J]. Climatic and Environmental Research, 2017, 22(1): 108-114. doi: 10.3878/j.issn.1006-9585.2016.16084
Citation: Qiang WANG, Qi ZHONG, Jie GUO, Zhiwei YU, Kai YANG. An Application Study on Measurement of Atmospheric Aerosol Extinction Coefficient Based on Cavity Attenuated Phase Shift Spectroscopy Technique[J]. Climatic and Environmental Research, 2017, 22(1): 108-114. doi: 10.3878/j.issn.1006-9585.2016.16084

基于腔减相移光谱技术测量大气气溶胶消光系数的应用研究

doi: 10.3878/j.issn.1006-9585.2016.16084
基金项目: 

国家重大科学仪器设备开发专项项目 2013YQ060569

详细信息
    作者简介:

    王强,男,1977年出生,硕士,正高级工程师,主要从事大气环境监测技术、影响因素、仪器设备及相关应用质量保证质量控制研究。E-mail:wangqiang@cnemc.cn

    通讯作者:

    杨凯,E-mail:yangkai@cnemc.cn

  • 中图分类号: P415

An Application Study on Measurement of Atmospheric Aerosol Extinction Coefficient Based on Cavity Attenuated Phase Shift Spectroscopy Technique

Funds: 

National Key Foundation for Scientific Instrument and Equipment 2013YQ060569

  • 摘要: 基于腔减相移光谱(CAPS)技术检测灵敏度高、光源性价比好、容易控制和有效吸收光程长等优点,搭建了一套基于CAPS技术的连续测量大气气溶胶消光系数的监测系统。测试系统高反射镜片反射率约为0.9999,对应有效光程约为4.4 km;通过Allan方差测试分析系统最佳积分时间约为80 s,对应消光系数检测极限为0.06 Mm-1;将系统应用于实际大气气溶胶消光系数的12个周期和48 h连续监测,显示空腔相移基本稳定,样品测量相移偏移明显,反演得到的大气能见度结果稳定可靠。由此表明,研制的基于CAPS技术的大气气溶胶消光系数连续测量系统应用于实际的测量是完全可行的。
  • 图  1  CPAS 测量系统试验装置结构图

    Figure  1.  The structure of the experimental device for the CPAS(Cavity Attenuated Phase shift Spectroscopy)measuring system

    图  2  空腔时LED 光源调制频率与相移之间的相关关系

    Figure  2.  The related relationship between LED(Light Emitting Diode)light source modulation frequency and phase shift under empty cavity

    图  3  (a)系统稳定性和(b)测量灵敏度试验分析结果

    Figure  3.  Analysis of(a)experimental results of the stability and(b)sensitivity of the measurement system

    图  4  CAPS 系统用于大气气溶胶消光系数的试验测量结果(12 个周期)

    Figure  4.  Measurement results of atmospheric aerosol extinction coefficient based on CAPS(12 cycles)

    图  5  CAPS 系统用于(a)PM2.5 浓度、(b)大气气溶胶消光系数的实际测量和(c)反演计算得到的大气能见度结果

    Figure  5.  Measurement results of(a)PM2.5 concentration,(b)atmospheric aerosol extinction coefficient based on CAPS,and(c)results of retrieved atmospheric visibility

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  • 收稿日期:  2016-04-22
  • 网络出版日期:  2016-08-30
  • 刊出日期:  2017-01-01

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