国产傅立叶变换红外光谱温室气体在线监测仪及其在大气本底监测中的初步应用  

Domestic in-situ Analyzer of Greenhouse Gases with Fourier Transform Infrared Spectroscopy and its Primary Application in Atmospheric Background Observation

作　　者：张晓春[1] 宋庆利 曹永 王鹏 于大江 王缅[1] 温民 ZHANG Xiaochun;SONG Qingli;CAO Yong;WANG Peng;YU Dajiang;WAMG Mian;WEN Min(Meteorological Observation Center of CMA,Beijing 100081,China; Heilongjiang Longfengshan Regional GAW Station,Wuchang 150200,China; Anhui Landun Photoelectron Co.LTD.,Tongling 244000,China)

机构地区：[1]中国气象局气象探测中心,北京100081 [2]黑龙江龙凤山大气本底站,黑龙江五常150200 [3]安徽蓝盾光电子股份有限公司,安徽铜陵244000

出　　处：《大气与环境光学学报》2019年第4期279-288,共10页Journal of Atmospheric and Environmental Optics

基　　金：国家重大科学仪器设备开发专项,2013YQ220643;公益性行业(气象)科研专项,GYHY201206037;中国气象局气候变化专项,CCSF201335~~

摘　　要：傅立叶变换红外光谱(Fourier transform infrared spectroscopy,FTIR)技术在大气环境在线监测领域有着广泛的应用,利用项目研制的基于傅立叶红外技术与White型多次反射池技术的国产FTIR系统,在龙凤山本底站进行了实际大气CH_4、CO、CO2和N2O的多组分在线测量,并与本底站多年业务运行的CRDS和GC系统的观测结果进行了同步对比分析。结果表明,(1)当前研制的FTIR原理样机的检出限较高,可满足高浓度温室气体排放的在线监测要求。但在大气本底监测方面,其与WMO-GAW的要求尚有一定差距,在检测能力(光能衰减、有效光程、波长校准、测量腔室等)、分析精度、不确定度以及系统稳定性等方面仍有较大的提升空间.(2)FTIR系统与CRDS和GC系统对大气CH4、CO观测的一致性变化趋势和相关性较好,CO_2和N2O的一致性趋势不很理想,这与观测系统的原理、分析技术、样品处理以及数据处理方法等有关。Fourier transform infrared spectroscopy(FTIR)technique is widely used in the field of atmospheric environment observation.A in-situ FTIR analyzer system based on the combination of the technology of Fourier infrared spectrum and White type multiple reflection cell was used to measure the multi-species of CH4,CO,CO2 and N2 O in the field of Longfengshan background GAW station,Heilongjiang,China,and its comparation with the CRDS and GC system was also carried out concurrently.The results show that,(1)the detection limit of FTIR principle prototype is a higher than that of design,which can satisfy the in-situ observation of high concentration of greenhouse gas emissions.However,there was still a certain gap between the syetem and the requirement of the WMO-GAW atmospheric background observation,which means that the domestic FTIR principle prototype has room for improvement in the detection ability(such as light energy attenuation,efficient optical path,the wavelength calibration and measurement chamber,etc.),the analysis precision,uncertainty,and the system stability,etc.(2)By comparison with CRDS and GC system,it was shown that there were a higher agreement on the trend consistency and correlation of CH4 and CO,although the trend consistency of CO2 and N2 O was not very ideal,which indicates that the performance of the analyzer system might be relative to the observation system,such as original principle,analysis and detect technology,ambient sample processing,data processing and so on.

关 键 词：傅立叶变换红外光谱 温室气体 大气本底 监测 

分 类 号：P413[天文地球—大气科学及气象学]