Anon. WHO. 1992. Cadmium-Environmental Aspects. Geneva. World Health Organization.
Anon. USEPA. 1995. Standard for Use Or Disposal Of Sewage Sludge. Fedral Register: Oct. 25. 60(206).
Carlos, A., Constantino, L., Garcia, F.P., Razo, L.M.D., Vazquez, R.R. and Varaldo, H.M.P. 2005. Chemical fractionation of heavy metals in soils irrigated with wastewater in central Mexico. J. Agric. Ecosys. Environ. 108, 57-71.
Carr, R. 2005. WHO guidelines for safe wastewater use: More than just numbers. J. Irrig. Drain. Eng. 54, 103-111.
Channey, R.L. 1980. Health risks associated with toxic metals in municipal sludge. In: Damron, G.T. (Eds.) Ann Arbor. Science Pub.
Channey, R., Baker, A., Malik, Y. and Brown, J. 2002. Phytoremediation of soil metals. J. Current Opinion Biotech. 36, 115-21.
Farshi, A.A., Shariati, M.R., Jarollahi, R., Shahabifar, M. and Tavallaei, M.M. 1999. An Estimate of Water Requirement of Main Field Crops and Orchards in Iran. Vol. 1: Field Crops. Soil and Water Research Institute. (in Farsi)
Fazeli, M.S. 1998. Enrichment of heavy metal in paddy crops irrigated by paper mill effluents near Nanjangud, Mysore District, Karnatake. India Environ. J. Geol. 34(4): 42-54.
Giordano, P.M. and Mays, D.A. 1977. Yield and heavy metal content of several vegetable species grown in soil amended with sewage sludge. In Biological Implications of Heavy Metals in the Environment. ERDA REP. Conf. 750929. Oak. Ridge. Tennessee.
Hattori, H.E., Asari, E. and C. Mitsuo. 2002. Estimate of cadmium concentration in brown rice. The 17th World Conference of Soil Science. Aug. 14-21. Thailand.
Jafarzadeh, N. 1997. Assessment the wastewater use effects in Shiraz on heavy metals concentration on soil and plants. Proceeding of the 6th Water and Soil Conference. (in Farsi)
Kabatta, A. and Pendias, H. 2001. Trace Elements in Soils and Plants. The 3rd Ed. CRC Press. Boca Raton FL.
Lasat, M. M. 2003. The use of plants for the removal of toxic metals from contaminated soil. J. Environ Pollution. 113, 121-7.
Lee, J., Reeves, R.D. and Brooks, R. 1998. The relation between nickel and citric acid in some nickel accumulation plants. Phytochemistry. 17, 1033-1035.
Markert, B. 1996. Insturmental Element and Multi-element Analysis of Plant Samples. John Wiley and Sons. Sussex. England.
Mattigod, S.V., Sposito, G. and Page, A.L. 1981. Factors affecting the solubility's of trace metal in soils. In: Dowdy, R.H. (Ed) Chemistry in the Soil Environment Soil. Sci. Soc. Am. Madison, WI.
Mostashari, M. 2002. Investigation of Quazvin soils and plants pollution with heavy metals during irrigation with wastewater. Proceeding of the 7th Water and Soil Conference. (in Farsi)
Nicholson, F.A., Smith, S.R., Alloway, B.J., Carlton-Smith, C. and Chambers, B.J. 2003. An inventory of heavy metals inputs to agricultural soils in England and Wales. J. Sci. Total Environ. 311, 205-219.
Okoronkwo, N.E., Igwe, J.C. and Onwuchekwa, E.C. 2005. Risk and health implications of polluted soils for crop production. African J. Biotech. 4(13): 1521-1524.
Ramos, I., Esteban, E., Lucena, J.J. and Garate, A. 2002. Cadmium uptake and subcellular distribution in plants of lactuca sp. Ca-Mn intraction. Plant Sci. 162, 761-767.
Anon. WHO. 1992. Cadmium-Environmental Aspects. Geneva. World Health Organization.
Anon. USEPA. 1995. Standard for Use Or Disposal Of Sewage Sludge. Fedral Register: Oct. 25. 60(206).
Carlos, A., Constantino, L., Garcia, F.P., Razo, L.M.D., Vazquez, R.R. and Varaldo, H.M.P. 2005. Chemical fractionation of heavy metals in soils irrigated with wastewater in central Mexico. J. Agric. Ecosys. Environ. 108, 57-71.
Carr, R. 2005. WHO guidelines for safe wastewater use: More than just numbers. J. Irrig. Drain. Eng. 54, 103-111.
Channey, R.L. 1980. Health risks associated with toxic metals in municipal sludge. In: Damron, G.T. (Eds.) Ann Arbor. Science Pub.
Channey, R., Baker, A., Malik, Y. and Brown, J. 2002. Phytoremediation of soil metals. J. Current Opinion Biotech. 36, 115-21.
Farshi, A.A., Shariati, M.R., Jarollahi, R., Shahabifar, M. and Tavallaei, M.M. 1999. An Estimate of Water Requirement of Main Field Crops and Orchards in Iran. Vol. 1: Field Crops. Soil and Water Research Institute. (in Farsi)
Fazeli, M.S. 1998. Enrichment of heavy metal in paddy crops irrigated by paper mill effluents near Nanjangud, Mysore District, Karnatake. India Environ. J. Geol. 34(4): 42-54.
Giordano, P.M. and Mays, D.A. 1977. Yield and heavy metal content of several vegetable species grown in soil amended with sewage sludge. In Biological Implications of Heavy Metals in the Environment. ERDA REP. Conf. 750929. Oak. Ridge. Tennessee.
Hattori, H.E., Asari, E. and C. Mitsuo. 2002. Estimate of cadmium concentration in brown rice. The 17th World Conference of Soil Science. Aug. 14-21. Thailand.
Jafarzadeh, N. 1997. Assessment the wastewater use effects in Shiraz on heavy metals concentration on soil and plants. Proceeding of the 6th Water and Soil Conference. (in Farsi)
Kabatta, A. and Pendias, H. 2001. Trace Elements in Soils and Plants. The 3rd Ed. CRC Press. Boca Raton FL.
Lasat, M. M. 2003. The use of plants for the removal of toxic metals from contaminated soil. J. Environ Pollution. 113, 121-7.
Lee, J., Reeves, R.D. and Brooks, R. 1998. The relation between nickel and citric acid in some nickel accumulation plants. Phytochemistry. 17, 1033-1035.
Markert, B. 1996. Insturmental Element and Multi-element Analysis of Plant Samples. John Wiley and Sons. Sussex. England.
Mattigod, S.V., Sposito, G. and Page, A.L. 1981. Factors affecting the solubility's of trace metal in soils. In: Dowdy, R.H. (Ed) Chemistry in the Soil Environment Soil. Sci. Soc. Am. Madison, WI.
Mostashari, M. 2002. Investigation of Quazvin soils and plants pollution with heavy metals during irrigation with wastewater. Proceeding of the 7th Water and Soil Conference. (in Farsi)
Nicholson, F.A., Smith, S.R., Alloway, B.J., Carlton-Smith, C. and Chambers, B.J. 2003. An inventory of heavy metals inputs to agricultural soils in England and Wales. J. Sci. Total Environ. 311, 205-219.
Okoronkwo, N.E., Igwe, J.C. and Onwuchekwa, E.C. 2005. Risk and health implications of polluted soils for crop production. African J. Biotech. 4(13): 1521-1524.
Ramos, I., Esteban, E., Lucena, J.J. and Garate, A. 2002. Cadmium uptake and subcellular distribution in plants of lactuca sp. Ca-Mn intraction. Plant Sci. 162, 761-767.