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People have been mining and using lead for thousands of years. [4] Descriptions of lead poisoning date to at least 200 BC, [4] while efforts to limit lead's use date back to at least the 16th century. [5] Concerns for low levels of exposure began in the 1970s with there being no safe threshold for lead exposure. [2] [4] [19]
Lead poisoning is especially hazardous to children under six years of age. [8] High levels of lead at this age can produce impaired neurological development that results in lifelong problems. A 1996 study showed 43% of children ages 1–5 in the Superfund area had blood lead concentrations above the threshold considered dangerous by federal ...
Mandated by the United States Department of Housing and Urban Development (HUD) standard 24 CFR Part 1330 (a) (4), Lead-Safe Work Practices provide those performing remodeling tasks in homes built before 1978 with guidelines on procedures they should be using to prevent creating a lead hazard. Lead poisoning remains a major environmental health ...
Thomas Midgley Jr. (May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.He played a major role in developing leaded gasoline (tetraethyl lead) and some of the first chlorofluorocarbons (CFCs), better known in the United States by the brand name Freon; both products were later banned from common use due to their harmful impact on human health and the environment.
In the past, lead was added to household paint to increase its drying speed and improve the durability and life of the finish. However, Lead is toxic and is a possible carcinogen. In 1978, the U.S. Consumer Product Safety Commission banned the residential use of lead-based paint containing ≥0.06% lead (600 ppm). [2] [3] [4]
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Lead paint removal can cost 8 to 15 dollars per square foot. [1] A kit offered by the EPA containing lead test costs 25 dollars. [2] After a house has been discovered to contain lead, its owner has four options they can pursue to prevent lead poisoning: they can encapsulate it, enclose it, remove it or replace the contaminated items.
Despite knowledge of lead's toxicity, there is a long history of using lead in paint due to its role in maintaining a paint's color and increasing durability. In 1951, Baltimore was the first city to ban the use of lead paint in new housing, starting a move towards abating the amount of lead use in homes.