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中文摘要：
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1.42nmol.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。
英文摘要：
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 quantitativeanalysis was completed to get ozone concentration by combining synthetic background spectrum method which uses informationfrom HITRAN database and instrumental line shape,and nonlinear least squares（NLLSQ）method.The measurement methodsfor system detection limit were discussed and the result is 1.42nmol.mol-1 with sixteen times averages.The authors developedcontinuous monitoring experiments in the suburban area of Hefei.For the day and month measurement results,the authorsanalyzed their variations with the generation sources.The result has shown that this system is reliable and precise and can beused as a new device and method for national ozone monitoring.
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