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基于二极管阵列PDA的紫外-可见差分吸收光谱(DOAS)系统的研究
引用本文:秦敏,谢品华,刘建国,刘文清,方武,陆钒,李昂,陆亦怀,魏庆农,窦科,张为俊.基于二极管阵列PDA的紫外-可见差分吸收光谱(DOAS)系统的研究[J].光谱学与光谱分析,2005,25(9):1463-1467.
作者姓名:秦敏  谢品华  刘建国  刘文清  方武  陆钒  李昂  陆亦怀  魏庆农  窦科  张为俊
作者单位:中国科学院安徽光学精密机械研究所环境光学中心,安徽,合肥,230031
基金项目:国家高技术研究发展计划“863”(2002AA641020)和中国科学院安光所所长基金资助项目
摘    要:介绍了一种自行研制的长程差分光学吸收光谱(DOAS)系统,该系统采用光电二极管阵列(PDA)作为光谱检测器,代替结构较为复杂的光电倍增管(PMT)加扫描圆盘的SD检测器,并对该系统检测器的偏置、暗电流、噪声、线性以及光谱仪的分辨率、光谱范围等性能进行了测试,同时对SO2,NO2等大气污染物进行了外场的测定,确定出相应光程下该系统测量SO2,NO2的最低检测限。

关 键 词:光电二极管阵列(PDA)  差分光学吸收光谱(DOAS)  系统
文章编号:1000-0593(2005)09-1463-05
收稿时间:05 25 2004 12:00AM
修稿时间:08 26 2004 12:00AM

Study on UV-Visible DOAS System Based on Photodiode Array (PDA)
QIN Min,XIE Pin-hua,LIU Jian-guo,LIU Wen-qing,FANG Wu,LU Fan,LI Ang,LU Yi-huai,WEI Qing-nong,DOU Ke,ZHANG Wei-jun.Study on UV-Visible DOAS System Based on Photodiode Array (PDA)[J].Spectroscopy and Spectral Analysis,2005,25(9):1463-1467.
Authors:QIN Min  XIE Pin-hua  LIU Jian-guo  LIU Wen-qing  FANG Wu  LU Fan  LI Ang  LU Yi-huai  WEI Qing-nong  DOU Ke  ZHANG Wei-jun
Institution:Environmental Optics Center, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
Abstract:A long-path differential optical absorption spectroscopy (DOAS) system is introduced. A photodiode array is employed as the detector to replace the complicated SD detector which consists of a PMT and a slotted disk. The properties of the detector and the spectrometer unit such as offset, dark current, noise, linearity, resolution, and wavelength range were measured. This system was also tested to measure SO_2 and NO_2 in the atmosphere. The detection limits of this system for SO_2, and NO_2 over a 713 m light path were determined.
Keywords:Photodiode array (PDA)  Differential optical absorption spectroscopy (DOAS)  System
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