7Brane S N, Weinstein L H. Uptake of fluoride and aluminium by plants grown in contaminated soil [J]. Water Air Soil Pollut, 1985 (24): 215-225.
8Loganthan P, Hedley M J. Fertiliser contaminants in New Zealand grazed pasture with special reference to cadmium and fluorine: a review [ J ]. Australian Journal of Soil Research, 2003, 41:501-532.
9Mclaughlin M J, Palmer L T, Tiller K G, et al. Increased soil salinity causes elevated cadmium concentrations in field grown potato tubers [J]. Journal of Environmental Quality, 1994, 23:1013 - 1018.
10Farrah H, Slavek J, Picketing W F. Fluoride sorption by soil components : calcium carbonate, humic acid, manganese diox- ide and ailica [J]. Australian Journal of Soil Research, 1985, 23 (3): 429-439.