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  • Title: Distribution of toxic trace elements in soil/sediment in post-Katrina New Orleans and the Louisiana Delta.
    Author: Su T, Shu S, Shi H, Wang J, Adams C, Witt EC.
    Journal: Environ Pollut; 2008 Dec; 156(3):944-50. PubMed ID: 18757126.
    Abstract:
    This study provided a comprehensive assessment of seven toxic trace elements (As, Pb, V, Cr, Cd, Cu, and Hg) in the soil/sediment of Katrina affected greater New Orleans region 1 month after the recession of flood water. Results indicated significant contamination of As and V and non-significant contamination of Cd, Cr, Cu, Hg and Pb at most sampling sites. Compared to the reported EPA Region 6 soil background inorganic levels, except As, the concentrations of other six elements had greatly increased throughout the studied area; St. Bernard Parish and Plaquemines Parish showed greater contamination than other regions. Comparison between pre- and post-Katrina data in similar areas, and data for surface, shallow, and deep samples indicated that the trace element distribution in post-Katrina New Orleans was not obviously attributed to the flooding. This study suggests that more detailed study of As and V contamination at identified locations is needed.
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