[4] Sundaraganesan N, Ilakiamani S, Subramani P, et al. Spectrochimica Acta, Part A: Molecular Spectroscopy, 2007, 67: 628.
[5] Zhai Fuli, Huang Yiqun, Li Chunying, et al. J. Agric. Food Chem., 2011, 59: 10023.
[6] Kim M S, Kim M K, Lee C J, et al. Bull. Korean Chem. Soc., 2009, 30(12): 2930.
[9] Rule W K, Vikesland P J. Analyst, 2010, 135(6): 1320.
[10] Pinchas S, Samuel D, Weiss-Broday M, et al. Journal of the Chemical Society, 1961. 1688.
[11] Kahovec L, Kohlreusch K W F Monatsh. Journal of the Chemical Society, 1941, 74: 333.
[12] Grand J, Kostcheev S, Bijeon J L, et al. Synthetic Metals, 2003, (139): 621.