The tunable diode laser absorption spectroscoty for measurement of NH3 with particles

被引：15
|
作者：
Wang Fei [1 ]
Huang Qun-Xing [1 ]
Li Ning [1 ]
Yan Jian-Hua [1 ]
Chi Yong [1 ]
Cen Ke-Fa [1 ]
机构：
[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China
来源：
ACTA PHYSICA SINICA | 2007年 / 56卷 / 07期
关键词：
TDLAS; wavelength modulation; NH3 concentration measurement; particle effect;
D O I：
10.7498/aps.56.3867
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Tunable diode laser absorption spectroscopy (TDLAS) with wavelength modulaton is used to measure the NH3 concentration at normal temperature and pressure near 1531.7 nm in near-infrared region. The concentration of 25 ppm can be obtained by 10 m long-path cell, and concentration from 25 ppm to 400 ppm has good linear relationship with 2f signal. The effect of particles on 2f signal is discussed in this paper, and a solution of the problem using laser intensity linear fit to concentration measurement immune to particle disturbance is suggested.
引用
收藏
页码：3867 / 3872
页数：6
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