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Solid Waste Incineration May Exceed Leaded Gasoline As Source Of Lead Air Pollution In Cities

he introduction of unleaded gasoline, says the study's lead author Steven Chillrud, Ph.D., of Columbia's Lamont-Doherty Earth Observatory in Palisades, N.Y.

"Solid waste combustion has been underestimated as a source of atmospheric lead and other contaminants," Chillrud says. "Furthermore," he adds, "current growth of incinerator use in urban centers in China and the common practice of residential garbage burning in Pakistan and many other developing nations make this work relevant to present day and future atmospheric contaminant fluxes and related human exposures."

The burning of municipal solid waste also "dominated the inputs of several other atmospheric metals, including zinc, tin, cadmium, antimony and possibly silver," Chillrud adds.

The researchers are now investigating the importance of solid waste incineration as a source of mercury, dioxins, PCBs (polycyclic biphenyls) and PAHs (polyaromatic hydrocarbons) to the New York City atmosphere.

The study was funded by the National Institute of Environmental Health Science's Superfund Basic Research Program and the Hudson River Foundation of New York City.


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