光谱学与光谱分析 |
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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 |
Environmental Optics Center, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China |
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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 SO2 and NO2 in the atmosphere. The detection limits of this system for SO2, and NO2 over a 713 m light path were determined.
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Received: 2004-05-25
Accepted: 2004-08-26
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Corresponding Authors:
QIN Min
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Cite this article: |
QIN Min,XIE Pin-hua,LIU Jian-guo, et al. Study on UV-Visible DOAS System Based on Photodiode Array (PDA)[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(09): 1463-1467.
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URL: |
https://www.gpxygpfx.com/EN/Y2005/V25/I09/1463 |
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