Measurement of air pollutants by differential optical absorption spectroscopy using a Cassegrain telescope with fibers

作     者：李红莲 魏永杰 侯艳霞 陈文亮 

作者机构：State Key Laboratory of Precision Measuring Technology and InstrumentsTianjin University Key Laboratory of Micro-Opto-Electro-Mechanical System TechnologyMinistry of EducationTianjin University College of Quality & Technical SupervisionHebei University School of Mechanical EngineeringHebei University of Technology 

出 版 物：《Optoelectronics Letters》 (光电子快报（英文版）)

年 卷 期：2013年第9卷第4期

页      面：313-316页

核心收录：

学科分类：07[理学] 08[工学] 070602[理学-大气物理学与大气环境] 082503[工学-航空宇航制造工程] 0706[理学-大气科学] 0825[工学-航空宇航科学与技术] 

基　　金：the National Natural Science Foundation of China (No.60938002) the National SME Technology Innovation Fund of China (No.10C26211203591) the University Science and Technology Development Fund of Tianjin in China (No.20120522) 

主　　题：差分光学吸收光谱 卡塞格伦望远镜 空气污染物 一致性测量 纤维束 DOAS 二氧化硫 二氧化氮 

摘      要：A differential optical absorption spectroscopy (DOAS) method is presented and used for the air pollutant detection. The novel measurement frame employs a Cassegrain telescope and a combined fiber bundle. The emitting and receiving fibers are bundled together at one port. The common port is placed at the focus of the Cassegrain telescope. The total length of the prototype is reduced to about 1/2 of the traditional one. Air pollutants of SO2, NO2 and O3 are monitored by the prototype, and the concentrations are inverted. Results show that the correlation coefficients are 0.9490, 0.9614 and 0.9301, respectively. And there is a good consistency between the measured results and the reference data.