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...Until now, the great majority of studies that have looked at environmental factors have looked at single substances,” Hu said. “Toxicity to humans [of mixed metals] cannot be predicted by toxicity of individual substances...
...Hu said the children’s center will investigate the effects of mixed metals on children living at the Tar Creek Superfund in Oklahoma...
Residents of the Tar Creek Superfund, a mining waste site, are exposed to mixtures of lead, manganese, cadmium and arsenic—the toxicities of which are known individually, but not as mixtures, Hu said...
...addition, Hu said he suspects the iron at the site may be toxic in combination with the other metals...
Four different studies will be performed by the children’s center, Hu said. Two of the studies will be field-based. One will be an epidemiological observation of the effects of living in Tar Creek on residents and children in particular...