利用开放光路傅里叶变换红外方法监测地表臭氧含量及分析

doi:10.3964/j.issn.1000-0593(2011)12-3256-04

摘要
参考文献
相关文章 (15)

全文: PDF (1984 KB)
输出: BibTeX | EndNote (RIS)

摘要：基于自研傅里叶变换红外光谱仪设计实现了开放光路臭氧在线监测系统，将计算机合成背景光谱方法与非线性最小二乘方法相结合进行定量分析，利用HITRAN数据库信息和仪器线型合成背景光谱，通过非线性最小二乘法反演出臭氧浓度，提高了测量精度和检测限，讨论了系统检测限测量方法，在16次平均情况下系统检测限达到1.42 nmol·mol^-1，利用此系统，对合肥市郊的地表臭氧浓度开展了连续监测实验，分析了浓度日变化以及月变化趋势与臭氧产生源之间的关系。结果表明，系统测量准确可靠，为我国臭氧监测提供了一种新的设备和方法。

关键词：开放光路;傅里叶变换红外光谱仪;臭氧;合成背景光谱;非线性最小二乘;检测限

Abstract：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.

Key words：Open path;Fourier transform infrared spectrometer;Ozone;Synthetic background spectrum;Nonlinear least squares method;Detection limit

收稿日期: 2011-04-07 修订日期: 2011-07-08

中图分类号:

O581

通讯作者: 李胜 E-mail: freelsen@yahoo.com.cn;shengli@aiofm.ac.cn

引用本文:

李胜，高闽光，张玉钧，刘文清，徐亮，童晶晶，程巳阳，金岭，魏秀丽，王亚平，陈军. 利用开放光路傅里叶变换红外方法监测地表臭氧含量及分析[J]. 光谱学与光谱分析, 2011, 31(12): 3256-3259.
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. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(12): 3256-3259.

链接本文:

https://www.gpxygpfx.com/CN/10.3964/j.issn.1000-0593(2011)12-3256-04 或 https://www.gpxygpfx.com/CN/Y2011/V31/I12/3256