Microbiological reduction of soluble U(VI) to insoluble U(IV) has been proposed as a remediation strategy for uranium-contaminated groundwater. Nitrate is a common co-contaminant with uranium. Nitrate inhibited U(VI) reduction in acetate-amended aquifer sediments collected from a uranium-contaminated site in New Mexico. Once nitrate was depleted, both U(VI) and Fe(III) were reduced concurrently...

To the Editor: The increased rate of leukemia in several Iraqi cities has been linked to exposure to depleted uranium, which was used during the consequent wars in Iraq from 1990 to 2010.[1‐4] Here, we investigated leukemia occurrence in the Sulaymaniyah Governorate (SG), which has been exposed to wars and crises at the same level as the rest of Iraq.[5] To the best of our knowledge, this study...

Samples were collected adjacent to the Island of Porquerolles in the Northwest Mediterranean Sea to study the distribution of natural and anthropogenic radionuclides in heavily oxygen-depleted sediments associated with the decomposition of organic carbon derived from the sea grass Posidonia oceanica. Elevated isotopic concentrations of uranium ( U and U up to 200 Bq/kg d.w.) were likely due to ...

The study described in this report used mathematical modeling to estimate health risks from exposure to depleted uranium (DU) during the 1991 Gulf War for both U.S. troops and nearby Iraqi civilians. The analysis found that the risks of DU-induced leukemia or birth defects are far too small to result in an observable increase in these health effects among exposed veterans or Iraqi civilians. On...