[1] D Kessler J, C Redmond M, L Valentine D et al. Science, 331, 312(2011).

[3] Y Lu, Q Tian, G Zheng et al. Applied Optics, 52, 879(2013).

[4] V Carrer, A Patzelt, J Schleusener et al. Quantum Electronics, 49, 6(2019).

[5] R M Cortes, L F S Fernandes, R Ferreira A et al. Science of Total Environment, 583, 466(2017).

[6] Y Li, Z Liao, S Liu et al. Canadian Journal of Soil Science, 92, 845(2012).

[7] H Dilles J, C Hecker, M V D Meijde et al. Geochemistry, Geophysics, Geosystems, 13, 3021(2012).

[8] V Junttila, M Laine. Remote Sensing of Environment, 192, 45(2017).

[9] D Lu, W Qian, J Xu et al. Infrared Physics & Technology, 77, 474(2016).

[10] X Li, Y Lu, Q Tian et al. Optics Express, 20, 24496(2012).

[11] Y Lu, W Qian, X Zhou et al. Optics Letters, 40, 4336(2015).