[1] [1] Urszula K, Rufus L C, James A R, et al. J. Environ. Qual., 2010, 39: 519.

[2] [2] Dudka S, Miller W P. Journal of Environ. Science and Health, 1999, 84(4): 681.

[3] [3] Taylor M D. The Science of Total Environment, 1997, 208: 123.

[6] [6] Tamer A Elbana, Selim H M. Soil Sci. Soc. Am. J, 2010, 74(6): 1956.

[7] [7] Zhao Xiulan, Qing Changle, Wei Shiqiang. Pedosphere, 2001, 11(2): 137.

[8] [8] Loganathan P, Hedley M. J. Environmental Pollution, 1997, 95(3): 319.

[9] [9] Onyatta J, Huang P. Geoderma, 1999, 91: 87.

[12] [12] Tessier A, Campbell P G, Bisson M. Analytical Chemistry, 1979, 51: 844.

[13] [13] Holm P E, Andersen B B, Chrisrensen T H. Soil Sci. Soc. Am. J, 1996, 60: 775.

[14] [14] SHI Jiachun, YU Xiulin, ZHANG Mingkui, et al. J. Environ. Qual., 2011, 40: 1695.