Health & Environmental Research Online (HERO)


Print Feedback Export to File
9104744 
Journal Article 
Improvement of a laser photoacoustic instrument for trace gas detection 
Dumitras, DC; Dutu, DC; Matei, C; Magureanu, AM; Petrus, M; Popa, C 
2007 
1 
Polytechnical University of Bucharest. Scientific Bulletin. Series A: Applied Mathematics and Physics
ISSN: 1223-7027 
69 
3 
45-56 
English 
WOS:000409859400005 
The paper presents the latest results obtained with a perfected system for trace gas detection based on laser photoacoustic spectroscopy. Tehnical details of the setup together with the performance parameters are presented. The laser source of the system is a CO2 laser highly stabilized in frequency so we have obtained the today most accurate absorption coefficients for ethylene at 57 rotation-vibration lines in the branches P and R, at 9.4 and 10.4 mu m bands. The high sensitivity of the sistem is proved by real-time monitoring of ethylene emission as plant hormone from tomatoes and pears, and as result of lipid peroxidation from human breath. 
Other
• Project 9 – Soil and Dust Ingestion
     Ethylene
          Breath ethylene