An ammonia sensor with high sensitivity in farmland based on laser absorption spectroscopy technology

2012 ◽  
Author(s):  
Ying He ◽  
Yujun Zhang ◽  
Liming Wang ◽  
Kun You ◽  
Yanwei Gao ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
High Sensitivity ◽  
Ammonia Sensor ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption

scholarly journals Detection of disease markers in human breath with laser absorption spectroscopy

2016 ◽  
Vol 24 (2) ◽  
Author(s):  
T. Stacewicz ◽  
Z. Bielecki ◽  
J. Wojtas ◽  
P. Magryta ◽  
J. Mikolajczyk ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
High Sensitivity ◽  
The State ◽  
The Body ◽  
Individual Feature ◽  
Laser Absorption Spectroscopy ◽  
Human Breath ◽  
Laser Absorption ◽  
Disease Markers ◽  
Trace Compounds

AbstractNumber of trace compounds (called biomarkers), which occur in human breath, provide an information about individual feature of the body, as well as on the state of its health. In this paper we present the results of experiments about detection of certain biomarkers using laser absorption spectroscopy methods of high sensitivity. For NO, OCS, C

scholarly journals Research on method for high sensitive detection of harmful gases in livestock houses based on laser absorption spectrum

2020 ◽  
Vol 189 ◽  
pp. 01004
Author(s):  
Runyu Wang ◽  
Daming Dong ◽  
Zengtao Ji ◽  
Leizi Jiao
Keyword(s):  
Absorption Spectroscopy ◽  
Tunable Laser ◽  
High Sensitivity ◽  
Laser Wavelength ◽  
Gas Absorption ◽  
Gas Detection ◽  
Scanning System ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Poultry Houses

Harmful gases such as ammonia and hydrogen sulfide in livestock and poultry houses can seriously damage the health of livestock and poultry as well as animal keepers, so it is great significant to detect these harmful gases rapidly and accurately for the improvement of the welfare of animals and the health of animal keepers. Laser absorption spectroscopy is a gas detection method with the advantages of high sensitivity and selectivity, and is widely used in industrial gas detection. However, it needs further exploring to verify whether laser absorption spectroscopy is useful in detecting low concentration harmful gases in livestock and poultry houses. This paper researches on the method for high-sensitivity detection of harmful gases in livestock and poultry houses based on laser absorption spectroscopy by detecting the absorption signals of ammonia with a self-designed system including a tunable laser wavelength scanning system, a photoelectric detecting system and a long light path gas absorption well, and verifies that laser absorption spectroscopy can be used for detecting harmful gases in livestock and poultry houses.

INTRACAVITY LASER ABSORPTION SPECTROSCOPY OF NO2 AND CH4 COOLED IN A SLIT JET SUPERSONIC EXPANSION

1991 ◽  
Vol 01 (C7) ◽  
pp. C7-471-C7-476
Author(s):  
A. CAMPARGUE ◽  
M. CHENEVIER ◽  
A. DELON ◽  
R. JOST ◽  
F. STOECKEL
Keyword(s):  
Absorption Spectroscopy ◽  
Laser Absorption Spectroscopy ◽  
Supersonic Expansion ◽  
Laser Absorption ◽  
Intracavity Laser

Monitoring the Fractional Distillation Purification of Inorganic Hydrides by Diode Laser Absorption Spectroscopy

2020 ◽  
Vol 56 (12) ◽  
pp. 1284-1289
Author(s):  
Ya. Ya. Ponurovskii ◽  
D. B. Stavrovskii ◽  
Yu. P. Shapovalov ◽  
M. V. Spiridonov ◽  
A. S. Kuz’michev ◽  
...  
Keyword(s):  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Fractional Distillation ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Diode Laser Absorption
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