HEAVY METAL IONS. SOME METAL IONS ARE GOOD! Fe 2+, K +, Ca 2+, Mg 2+ Essential to the health of humans. May be in water but mostly get in food we eat.

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Presentation transcript:

HEAVY METAL IONS

SOME METAL IONS ARE GOOD! Fe 2+, K +, Ca 2+, Mg 2+ Essential to the health of humans. May be in water but mostly get in food we eat.

HEAVY METAL IONS ARE HARMFUL! Lead- Pb 2+ Mercury- Hg 2+ 1)Bind to proteins preventing them from doing their intended tasks 2)Damage to nervous system, brain, kidneys, and liver

LEAD (PB) Sources in environment: 1)Paint- most paints no longer contain lead 2)Automobile batteries 3)Leaded gasoline until 1970’s 4)Lead pipes in older homes

MERCURY Sources in environment; 1)Fluorescent light bulbs 2)Medical thermometers 3)Formally used in antiseptics and pesticides

MAD HATTER- DUE TO MERCURY POISONING

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