[1] Platt U, Perner D, P tz H W. Simultaneous measurement of atmospheric CH2 O, O3 , and NO2 by differential optical absorption [J]. J. Geophys. Res., 1979, 84(C10): 6329-6335.
[2] Edner H, Ragnarson P, Spannare S, et al. Differential optical absorption spectroscopy (DOAS) system for urban atmospheric pollution monitioring [J]. Appl. Opt., 1993, 32(3): 327-333.
[5] Li Suwen, Xie Pinhua, Liu Wenqing, et al. A study of applicability of light emitting diodes in differential optical absorption spectroscopy measurements [J]. Acta Physica Sinica, 2008, 57(3): 1963-1967(in Chinese).
[6] Triki M, Cermak P, Mejean G, et al. Cavity-enhanced absorption spectroscopy with a red LED source for NOx trace analysis [J]. Appl. Phys. B, 2008, 91(1): 195-201.
[7] Wu T, Zhao W, Chen W, et al. Incoherent broadband cavity enhanced absorption spectroscopy for in situ measurements of NO2 with a blue light emitting diode [J]. Appl. Phys. B, 2009, 94(1): 85-94.
[8] Angel G B, Antonio A F, Daniel V M, et al. Thermal influences on optical properties of light-emitting diodes: a semiempirical model [J]. Appl. Opt., 2001, 40(4): 533-537.