Tunable Diode Laser Absorption Spectroscopy System for Trace Ethylene Detection

被引：20
|
作者：
Pan Wei-dong [1 ]
Zhang Jia-wei [2 ]
Dai Jing-min [1 ]
Song Kai [1 ]
机构：
[1] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China
[2] NE Forestry Univ, Coll Electromech Engn, Harbin 150040, Peoples R China
来源：
SPECTROSCOPY AND SPECTRAL ANALYSIS | 2012年 / 32卷 / 10期
关键词：
TDLAS; Ethylene; Trace gas; Wavelength modulation; MU-M; SPECTROMETER; METHANE;
D O I：
10.3964/j.issn.1000-0593(2012)10-2875-04
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Tunable diode laser absorption spectroscopy (TDLAS) was characterized by ultra-narrow line width laser and wavelength modulation, which makes it possible to scan a single absorption line. TDLAS has an advantage in trace gas analysis for its high resolution, high sensitivity and quick response. The 1 626. 8 nm absorption line of ethylene was selected for detecting by analyzing its absorption line characteristic. The TDLAS system was developed with a white type multi-pass cell, combined with wavelength modulation and harmonic detection. Ethylene concentration ranges from 20 to 1 200 ppmv were tested using this system. The estimated detection limit of the system is 10 ppmv.
引用
收藏
页码：2875 / 2878
页数：4
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