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A new study conducted by researchers at Indiana University-Purdue University Indianapolis, Xavier University of Louisiana and SUNY ESF has discovered a possible new primary cause for lead poisoning in children living in cities.
In the past, lead poisoning in children was believed to be caused primarily by point sources, such as lead-based paint in homes. The study results indicate wind blown lead-enriched dust may be the primary cause of lead poisoning among urban children.
The researchers say the top few inches of urban soil contains a potentially larger reservoir of accumulated lead. Recent studies have indicated the lead enriched soil can be redistributed in dry and windy conditions, which cause increased exposure to children living in areas where surface soils has high lead values, such as transportation and population centers.
Lead poisoning in children is linked to a variety of permanent health effects, including lowered IQ, attention deficient hyperactivity disorder, behavioral problems and other health effects. The researchers concluded it appears a significant additional source of lead contamination is from the soil, though some continued lead poisoning is from point sources like paint dust.
The researchers also developed a new method for predicting whether blood lead test results for a child taken on any date shows if the child is at risk on an annual basis for exceeding safe blood lead concentrations established by the U.S. Environmental Protection Agency.
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