[1] KOCACHE R. The measurement of oxygen in gas-mixtures[J]. Journal of Physics E: Scientific Instruments, 19, 401-412(1986).

[2] KHALIL M A K, RASMUSSEN R A. Carbon monoxide in the earth's atmosphere: increasing trend[J]. Science, 224, 54-56(1984).

[3] WOJTAS J, TITTEL F K, STACEWICZ T et al. Cavity-enhanced absorption spectroscopy and photoacoustic spectroscopy for human breath analysis[J]. International Journal of Thermophysics, 35, 2215-2225(2014).

[4] MILDE T, HOPPE M, TATENGUEM H et al. QEPAS sensor for breath analysis: a behavior of pressure[J]. Applied Optics, 57, C120-C127(2018).

[5] MA Y F, LEWICKI R, RAZEGHI M et al. QEPAS based ppb-level detection of CO and N2O using a high power CW DFB-QCL[J]. Optics Express, 21, 1008-1019(2013).

[6] ELIA A, LUGARA P M, DI FRANCO C et al. Photoacoustic techniques for trace gas sensing based on semiconductor laser sources[J]. Sensors, 9, 9616-9628(2009).

[7] WILCKEN K, KAUPPINEN J. Optimization of a microphone for photoacoustic spectroscopy[J]. Applied Spectroscopy, 57, 1087-1092(2003).

[8] MA Y F, QIAO S D, HE Y et al. Highly sensitive acetylene detection based on multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy and a fiber amplified diode laser[J]. Optics Express, 27, 14163-14172(2019).

[9] KOSTEREV A A, BAKHIRKIN Y A, CURL R F et al. Quartz-enhanced photoacoustic spectroscopy[J]. Optics Letters, 27, 1902-1904(2002).

[10] WACLAWEK J P, MOSER H, LENDL B. Compact quantum cascade laser based quartz-enhanced photoacoustic spectroscopy sensor system for detection of carbon disulfide[J]. Optics Express, 24, 6559-6571(2016).

[11] LANG Z T, QIAO S D, MA Y F. Acoustic microresonator based in-plane quartz-enhanced photoacoustic spectroscopy sensor with a line interaction mode[J]. Optics Letters, 47, 1295-1298(2022).

[12] LIU K, GUO X Y, YI H M et al. Off-beam quartz-enhanced photoacoustic spectroscopy[J]. Optics Letters, 34, 1594-1596(2009).

[13] BÖTTGER S, KÖHRING M, WILLER U et al. Off-beam quartz-enhanced photoacoustic spectroscopy with LEDs[J]. Applied Physics B, 113, 227-232(2013).

[14] HU L, ZHENG C T, ZHENG J et al. Quartz tuning fork embedded off-beam quartz-enhanced photoacoustic spectroscopy[J]. Optics Letters, 44, 2562-2565(2019).

[15] MA Y F, HONG Y H, QIAO S D et al. H-shaped acoustic micro-resonator based quartz-enhanced photoacoustic spectroscopy[J]. Optics Letters, 47, 601-604(2022).

[16] MA Y F, HE Y, YU X et al. HCl ppb-level detection based on QEPAS sensor using a low resonance frequency quartz tuning fork[J]. Sensors and Actuators B: Chemical, 233, 388-393(2016).

[17] WU H P, SAMPAOLO A, DONG L et al. Quartz enhanced photoacoustic H2S gas sensor based on a fiber-amplifier source and a custom tuning fork with large prong spacing[J]. Applied Physics Letters, 107, 111104(2015).

[18] MA Y F, HE Y, TONG Y et al. Quartz-tuning-fork enhanced photothermal spectroscopy for ultra-high sensitive trace gas detection[J]. Optics Express, 26, 32103-32110(2018).

[19] HU Y Q, QIAO S D, HE Y et al. Quartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing[J]. Optics Express, 29, 5121-5127(2021).

[20] QIAO S D, HE Y, MA Y F. Trace gas sensing based on single-quartz-enhanced photoacoustic-photothermal dual spectroscopy[J]. Optics Letters, 46, 2449-2452(2021).

[21] LIU K, MEI J X, ZHANG W J et al. Multi-resonator photoacoustic spectroscopy[J]. Sensors and Actuators B: Chemical, 251, 632-636(2017).

[22] LANG Z T, QIAO S D, HE Y et al. Quartz tuning fork-based demodulation of an acoustic signal induced by photo-thermo-elastic energy conversion[J]. Photoacoustics, 22, 100272(2021).

[23] MA Y F, HE Y, ZHANG L G et al. Ultra-high sensitive acetylene detection using quartz-enhanced photoacoustic spectroscopy with a fiber amplified diode laser and a 30.72 kHz quartz tuning fork[J]. Applied Physics Letters, 110, 031107(2017).

[24] HE Y, MA Y F, TONG Y et al. Ultra-high sensitive light-induced thermoelastic spectroscopy sensor with a high Q-factor quartz tuning fork and a multipass cell[J]. Optics Letters, 44, 1904-1907(2019).

[25] HONG Y H, QIAO S D, MA Y F. Improved IP-QEPAS sensor based on cylindrical cavity enhancement[J]. Infrared Physics and Technology, 115, 103730(2021).

[26] GORDON I E, ROTHMAN L S, HILL C et al. The HITRAN2016 molecular spectroscopic database[J]. Journal of Quantitative Spectroscopy and Radiative Transfer, 203, 3-69(2017).