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Lead (Pb) is a heavy trace element and is formed by the radioactive decay of uranium and thorium. In crustal rocks, it is present as the lead sulfide mineral galena. [1] Natural sources of lead in the lead cycle include wind borne dust, volcanic outgassing, and forest fires. [2]
Residents had long been concerned about the air pollution from the plant that was found to have emitted lead, arsenic and other dangerous pollutants over decades. Lead is a potent neurotoxin that puts children at-risk for learning disabilities, lower IQs and other developmental problems who may have acquired lead poisoning from playing outdoors ...
Common causes of lead poisoning epidemics include mining, lead recycling, and food/water contamination. [1] These events also cause disproportionate childhood fatalities as children are more susceptible to lead poisoning than adults.
Lead contamination in Oakland represents a serious and persistent public health threat.Lead contamination in modern Oakland comes from three primary sources: remnants from previous industry, deposits from leaded gasoline, and paint chips from leaded paints.
The source of the contamination has been attributed to "corrosion in the lead and iron pipes that distribute water to city residents". [58] In 2015, the lead concentration of drinking water in north-eastern Tasmania, Australia, reached a level over 50 times the prescribed national drinking water guidelines. The source of the contamination was ...
These sections require the EPA "(1) to list widespread air pollutants that reasonably may be expected to endanger public health or welfare; (2) to issue air quality criteria for them that assess the latest available scientific information on nature and effects of ambient exposure to them; (3) to set primary NAAQS to protect human health with ...
Lead, mercury and other pollutants could be affecting the ratio of boys to girls born each year, according to a new study published Thursday. Lead, mercury, other pollutants could affect birth ...
Plants for the production of lead are generally referred to as lead smelters. Primary lead production [clarification needed] begins with sintering. Concentrated lead ore is fed into a sintering machine with iron, silica, limestone fluxes, coke, soda ash, pyrite, zinc, caustics or pollution control particulates.