1. Heavy metals in contaminated soils: a review of sources, chemistry, risks and best available strategies for remediation;Wuana;ISRN Ecol.,2011
2. Toxic effects of chromium and its compounds;Baruthio;Biol. Trace Elem. Res.,1992
3. Human health concerns of lead mercury, cadmium, arsenic;Hutton,1987
4. Vance Vella, Elizabeth O’Brien, Elisa Idris, Health impacts of lead poisoning : a preliminary listing of the health effects and symptoms of lead poisoning, lead action news, 6 (1998) 2.
5. Mark Hyman, The impact of mercury on human health and the environment, alternative therapies, 10 (2004) 6.