Microbiology Procedure
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Microorganism Controlling by Heavy Metals

Microorganism Controlling by Heavy Metals -

The activity of heavy metals on microorganisms is termed oligodynamic action.

Metals as silver, mercury and copper are used. Mercury is an older antiseptic, used as mercuric chloride (HgCI2).

In products like mercurochrome, merthiolate and metaphen, mercury is combined with organic  carrier compounds, that reduces its toxicity to skin.

Copper is particularly active against algae.

It is used as copper sulphate in swimming pools and municipal water supplies.

Silver, as silver nitrate is used as an antiseptic and disinfectant.

One drop of 1% AgNO, solution is placed in eyes of newborn to protect against infection by the gonococcus, Neisseria gonorrhoeae.

Silver nitrate can also be combined with an antimicrobial drug for use in treatment of burns.

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