Spectroscopy and Spectral Analysis, Volume. 31, Issue 12, 3256(2011)
Monitoring and Analysis of Urban Ozone Using Open Path Fourier Transform Infrared Spectrometry
An ozone monitoring system was developed by the method of open path Fourier transform infrared (OP-FTIR) spectrometry based on our FTIR spectrometer. In order to improve measurement precision and detection limit, the quantitative analysis was completed to get ozone concentration by combining synthetic background spectrum method which uses information from HITRAN database and instrumental line shape, and nonlinear least squares (NLLSQ) method. The measurement methods for system detection limit were discussed and the result is 1.42 nmol·mol-1 with sixteen times averages. The authors developed continuous monitoring experiments in the suburban area of Hefei. For the day and month measurement results, the authors analyzed their variations with the generation sources. The result has shown that this system is reliable and precise and can be used as a new device and method for national ozone monitoring.
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LI Sheng, GAO Min-guang, ZHANG Yu-jun, LIU Wen-qing, XU Liang, TONG Jing-jing, CHENG Si-yang, JIN Ling, WEI Xiu-li, WANG Ya-ping, CHEN Jun. Monitoring and Analysis of Urban Ozone Using Open Path Fourier Transform Infrared Spectrometry[J]. Spectroscopy and Spectral Analysis, 2011, 31(12): 3256
Received: Apr. 7, 2011
Accepted: --
Published Online: Jan. 5, 2012
The Author Email: Sheng LI (freelsen@yahoo.com.cn)