Dialysis encephalopathy is a form of
aluminum neurotoxicity characterized by
speech difficulty, dementia and
convulsions (Richard, 1993).According to
Environmental Protection agency the
acceptable amount of heavy metals such as
antimony in one liter of drinking water is
0.006 mg/l, for lead it is 0.015 mg/l, for
Arsenic 0.010 mg/l, and for Aluminum
0.05-0.2 mg/l. The heavy metals related
most often to human poisoning are lead,
mercury, arsenic and cadmium. Other
heavy metals, including copper, zinc, and
chromium, are actually required by the
body in small amounts (Goyer and
Clarkson, 2001).