[9] Schwertmann U, Taylor R M. Iron Oxides Minerals in Soil Environments, Dixon J B(Eds), Soil Sci. Soc. Am. Madison. WI, 1989.
[12] McIntyre N S, Zetaruk D G. Anal. Chem., 1977, 49(11): 1521.
[13] Wagner C D, Zatko D A, Raymond R H. Anal. Chem., 1980, 52(9): 1445.
[14] Siriwardene R V, Cook J M. J. Colloid Interface Sci., 1985, 108(2): 414.
[15] Manocha A S, Park R L. Appl. Surf. Sci., 1977, 1(1): 129.
[16] Christie A B, Lee J, Sutherland I, et al. Appl. Surf. Sci., 1983, 15(1-4): 224.
[17] Pederson L R. J. Electron Spectrosc. Relat. Phenom., 1982, 28(2): 203.
[18] Seyama H, Soma M. J. Chem. Soc. Faraday Transl. 1, 1984, 80: 237.
[19] Dake L S, Baer D R, Zachara J M. Surf. Interface Anal., 1989, 14(1-2): 71.