摘要
优选了中心频率分别为6338.5895cm-1和6337.99cm-1的CO和CO2吸收谱线,使用一个激光器扫描经过该对谱线,在搭建的实验系统上实现了对CO和CO2的同时测量,实验结果表明,基于半导体激光吸收谱(DLAS)的CO和CO2检测下限分别为3σ=0.042%和3σ=0.022%,CO和CO2的线性相关系数分别为0.9999和0.9996,CO和CO2相互间干扰小于1%。现场测量结果表明,该技术能够较好地满足工业过程、机动车尾气和环保等的CO和CO2浓度同时测量的需要。
Diode laser absorption spectroscopy(DLAS)has developed into an important analytical technique,which has been applied to analyze gas concentration in industry,it usually only can measure single gas' concentration.In this work a pair of CO and CO2 lines whoise center frequencies are respectively 6 338.589 5 cm-1 and 6 337.99 cm-1 are selected are tested simultaneously with a diode laser scanning the pair of lines.Wavelength modulation spectroscopy(WMS)and coherent electronic detection techniques are adopted i...
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2009年第8期1070-1073,共4页
Journal of Optoelectronics·Laser
基金
国家"863"计划资助项目(2006AA040310)
关键词
半导体激光吸收光谱
调制吸收光谱
在线浓度测量
CO
CO2
diode laser absorption spectroscopy（DLAS）
wavelength modulation spectroscopy
on-line concentration measurement
CO
CO2
