Journal of Atmospheric and Environmental Optics ›› 2012, Vol. 7 ›› Issue (1): 38-43.

• 论文 • Previous Articles     Next Articles

Atmospheric Mercury Pollution with Differential Optical Absorption Spectroscopy(DOAS)

LI ChuanXin1,2, LIU WenQin2,SI FuQi2,LIU Yu2,HU RenZhi2   

  1. 1 Department of Optics & Optical Engineering, University of Science and Technology of China, Hefei 230026, China; 2 Key Lab of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics ,Chinese Academy of Sciences ,Hefei 230031,China
  • Received:2011-05-12 Revised:2011-09-19 Online:2012-01-25 Published:2011-12-27

Abstract:

In China, atmospheric mercury pollution is serious and is considered to be the largest mercury quantity emissions in world. Mercury can retain elemental form for a long time in atmosphere, and also can be transmitted for a long-distance. The feasibility studies of the technology of the differential optical absorption spectroscopy (DOAS) technology that applied for atmospheric mercury measurement were discussed. First, mercury resonance absorption is studied by the measurement of cells of mercury vapor with different lengths, then the absorption of saturated mercury vapor is analyzed using high-resolution spectrometer. Finally, with the current instrument, the concentration of mercury in air is measured. Through the experiment, main interfering gases are identified, and the requirement of the resolution of spectrometer is ensured. The research result provides advanced technical support for further measurements of mercury in the atmospheric and the mercury of high concentration in flue gas.

Key words: environmental optics, differential optical absorption spectroscopy, mercury vapor, Flue gas

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