Sensitive detection of oxygen using a diffused integrating cavity as a gas absorption cell

被引：29

作者：

Zhou, Xue ^{[1
]}

Yu, Jia ^{[2
]}

Wang, Lin ^{[1
]}

Gao, Qiang ^{[3
]}

Zhang, Zhiguo ^{[1
]}

机构：

[1] Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Harbin 150001, Peoples R China

[2] Heilongjiang Univ, Phys Sci & Technol, Harbin 150080, Peoples R China

[3] Lund Univ, Div Combust Phys, SE-22100 Lund, Sweden

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 241卷

关键词：

Tunable diode laser; Absorption spectroscopy; Integrating cavity; Oxygen sensor; SPECTROSCOPY; SENSOR; PATHS; TDLAS; H2O;

D O I：

10.1016/j.snb.2016.10.033

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, an oxygen monitoring system was demonstrated for sensitive oxygen detection. The system is based on tunable diode laser absorption spectroscopy (TDLAS) and wavelength modulation spectroscopy (WMS). Stable 2nd-harmonic signals of oxygen were detected by measuring the oxygen P9 absorption line at 764.38 nm. In the detection, a cubic diffuse integrating cavity was employed as a gas absorption cell to increase the optical path length and achieve a higher sensitivity. In addition, to perform automatic gas concentration measurements, a data recording and analyzing program based on the National Instruments LabVIEW software platform was developed. An uncertainty of 0.05% and a detection sensitivity of 350 ppmv were obtained using this system. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1076 / 1081

页数：6

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