Pure Lead

Lead is one of the oldest metals known to man, and estimated its existence in the soil about 13 Mellijm / kg, as sea water contains lead, 
a concentration range Pim 9-300 micrograms / liter. Lead is used in the battery industry (which uses about 50% of global lead production) 
and the production of certain organic compounds that are added to motor fuel to improve the performance Almattur, making dyes and alloys,
 cosmetics and hair dye powders. Publishes lead and its compounds in the form of flour dust hung in the air inhaled by the human in the air, or move with the food.
 The direct impact is limited by the skin to workers in industrial facilities, which use lead, such as petroleum refineries or battery industry.