caa a22 4500 445369086 CHVBK 20180317142940.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s00340-011-4550-z doi (NATIONALLICENCE)springer-10.1007/s00340-011-4550-z Breath ammonia detection based on tunable fiber laser photoacoustic spectroscopy [Elektronische Daten] [J. Wang, W. Zhang, L. Li, Q. Yu] A new detection method for ammonia in high concentration of CO2 and H2O is reported, which uses a wavelength modulated photoacoustic spectrometer based on a near-infrared tunable erbium-doped fiber laser in combination with an optical fiber amplifier. The multi-wavelength (1522.44nm, 1522.94nm and 1545.05nm) photoacoustic signal measurement is established to detect multi-spectrum signal in samples. The problem of ammonia detection in high concentration of CO2 and H2O is resolved at atmospheric pressure. The minimum detection limit of 16ppb (signal-to-noise ratio = 1) in simulated breath samples (5.3% CO2 and 6.2% H2O (100% relative humidity at 37°C)) is achieved. Springer-Verlag, 2011 Wang J. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut Zhang W. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut Li L. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut Yu Q. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut Applied Physics B Springer-Verlag 103/2(2011-05-01), 263-269 0946-2171 103:2<263 2011 103 340 https://doi.org/10.1007/s00340-011-4550-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4550-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang J. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut NATIONALLICENCE 700 1- Zhang W. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut NATIONALLICENCE 700 1- Li L. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut NATIONALLICENCE 700 1- Yu Q. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116023, Dalian, China aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 103/2(2011-05-01), 263-269 0946-2171 103:2<263 2011 103 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer