大气与环境光学学报 ›› 2010, Vol. 5 ›› Issue (1): 46-53.

• 环境光学监测技术 • 上一篇    下一篇

基于便携式差分吸收光谱系统的单环芳香烃测量研究

刘文彬, 谢品华, 秦敏, 司福祺, 徐晋, 李昂, 章勇, 刘宇   

  1. (中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室,合肥,230031)
  • 收稿日期:2009-04-09 修回日期:2009-08-01 出版日期:2010-01-28 发布日期:2010-01-26
  • 通讯作者: 刘文彬(1982-),男,安徽人,中国科学院安徽光学精密机械研究所环境光学中心硕士研究生。 E-mail:wbliu@aiofm.ac.cn
  • 作者简介:刘文彬(1982-),男,安徽人,中国科学院安徽光学精密机械研究所环境光学中心硕士研究生。
  • 基金资助:

    国家863计划项目(2006AA06A306)、安徽省自然科学基金项目(6094033)资助

Measurement of Monocyclic Aromatic Hydrocarbons with A Portable DOAS System

LIU Wen-bin, XIE Pin-hua, QIN Min, SI Fu-qi, XU Jin, LI Ang, ZHANG Yong, LIU Yu   

  1. (Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031)
  • Received:2009-04-09 Revised:2009-08-01 Published:2010-01-28 Online:2010-01-26

摘要:

差分吸收光谱技术(DOAS)是利用气体分子在紫外/可见波段的特征吸收来精确解析其浓度的光学方法。目前,该方法在大气污染成分探测方面有着广泛的应用。本文采用自行研制的便携式差分吸收光谱系统测量污染源区的单环芳香烃有机物,研究了影响单环芳香烃光谱反演的主要干扰因素,分析比较了去除O2干扰的相对和绝对浓度反演方法,给出便携式差分吸收光谱系统在光程为24 m条件下系统的检测限,并在化工厂区进行了单环芳香烃浓度的实际测量,结果表明便携式差分吸收光谱系统可应用于挥发性有机物污染源、污染泄露的应急监测。

关键词: 差分吸收光谱, 便携式, 单环芳烃, 监测

Abstract:

Differential optical absorption spectroscopy technique (DOAS) has been used to measure trace gases in the atmosphere. This technique uses the gases’ strongly structured absorption of radiation in the UV and visible spectral range to retrieve their concentration. The measurement on MAHC was done using the portable DOAS system developed by Anhui Institute of Optics and Fine Mechanics. The retrieve method for measuring MAHC with the system and the effect of relative retrieval and absolute retrieval methods to remove the interference of O2 were analyzed. The detect limits of portable DOAS are given. The results demonstrate that the portable DOAS system can be applied to polluted source of MAHC and polluted gases leak monitoring.

Key words: differential optical absorption spectroscopy, portable, MAHC, monitoring

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