6Lawrence Nathan S. Analytical detection methodologies for methane and related hydrocarbons [ J ] . Talanta, 2006 ,69(2):385 -392.
7Amato P D, Mazzinghi P, Castagnoli F. Methane analyzer based on TDL's for measurements in the lower stratosphere: design and laboratory tests [ J ]. Appl. Phys. B, 2002,75 : 195 - 202.
8Frish B M, Wainner T R, Evans S J, et al. Standoff sensing of natural gas leaks:evolution of the remote methane leak detector (RMLD) [ C ]. Quantum Electronics and Laser Science Conference (QELS) ,2005 : 1941 - 1943.
9Uehara K,Tat H. remote detection of methane with a 1.66 μm diode laser[ J]. Appl. Opt, 1992, (31) :809 -814.
10Jin W. Performance analysis of a time-division-multiplexed fiber-optic gas-sensor array by wavelength modulation of a distributed-feedback laser [ J ]. Applied Optics, 1999,38 (29) :5290 - 5297.