1. Global health risks: Mortality and burden of disease attributable to selected major risks. Geneva, World Health Organization, 2009 ( http://www.who.int/healthinfo/global_burden_disease/GlobalHealthRisks_report_full.pdf , accessed 20 December 2010)
2. Exposure to lead: A major public health concern. Geneva, World Health Organization, 2010 ( http://www.who.int/ipcs/features/lead..pdf , accessed 20 December 2010).
3. http://water.epa.gov/drink/contaminants/
4. Casas JS, Sordo J (2006) Lead: chemistry, analytical aspects, environmental impact and health effects. Elsevier, Amsterdam
5. Lin YW, Huang CC, Chang HT (2011) Gold nanoparticle probes for the detection of mercury, lead and copper ions. Analyst 136:863–871