Highly precise and real-time measurements of 13CO2/12CO2 isotopic ratio in breath using a 2 μm diode laser

Sun Ming-Guo, Ma Hong-Liang, Liu Qiang, Cao Zhen-Song, Wang Gui-Shi, Liu Kun, Huang Yin-Bo, Gao Xiao-Ming, Rao Rui-Zhong
2018 Wuli xuebao  
Concentration and pressure measurement of water vapor in sealed glass containers based on tunable diode laser absorption spectroscopy
doi:10.7498/aps.67.20171861 fatcat:txpbznclobcphhwwqfcn6mskzm