Water pollution by metals


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Water pollution by metals are things that can harm humans. Because many hazardous compounds contained in the water. To know the water is polluted or not by testing.

The content of the maximum that may be contained in the water:

1. Calcium (Ca): 200
2. Magnesium (Mg): 150
3. Barium (Ba): 0.05
4. Iron (Fe): 1
5. Manganese (Mn): 0.5
6. Copper (Cu): 1
7. Zinc (Zn): 15
8. Hexavalent chromium (Cr6 +): 0.05
9. Cadmium (Cd): 0.01
10. Mercury (Hg): 0.001
11. Face (Pb): 0.1
12. Arsenic (As): 0.05
13. Selenium (Se): 0.01

Water pollution by metals. Heavy metals such as mercury (Hg), lead (Pb), arsenic (As), cadmium (Cd), chromium (Cr), zinc (Zn) and nickel (Ni), one form of inorganic materials pose serious health problems.

Heavy metals have densities greater than 5 gr/cm3 and is resistant explained. Heavy metals can enter the body directly and indirectly. Heavy metals that enter the body would be harmful for those who consume.

Danger of water pollution by metals that can be posed is:

1. Barium (Ba): In powder form, is easy to burn at room temperature and cause a rise in blood pressure and disturbance of the nervous system.

2. Cadmium (Cd): In powder form is also flammable. Toxic by inhalation of air or steam, can lead to long-term cancer, accumulate in the liver, pancreas, kidney and thyroid, can cause hypertension is suspected.

3. Chromium (Cr): hexavalent chromium is carcinogenic and corrosive to body tissues. Long term, increased skin sensitivity and damage to the kidneys.

4. Lead (Pb): Toxic if ingested or inhaled from the air or steam and long-term effects, causing brain and kidney damage; abnormalities at birth.

5. Mercury (Hg): Very toxic if absorbed through the skin or by inhalation of vapor and long-term effects, toxic to the central nervous system, can cause abnormalities at birth.

6. Silver (Ag): highly toxic and long-term problems posed, a permanent gray discoloration of the skin, eyes and mucous membranes (mucus).

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