Distribution of Toxic Trace Elements in Soil/sediment in Post-Katrina New Orleans and the Louisiana Delta
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.
T. Su et al., "Distribution of Toxic Trace Elements in Soil/sediment in Post-Katrina New Orleans and the Louisiana Delta," Environmental Pollution, Elsevier, Dec 2008.
The definitive version is available at http://dx.doi.org/10.1016/j.envpol.2008.05.016
Civil, Architectural and Environmental Engineering
Missouri University of Science and Technology. Environmental Research Center
Geological Survey (U.S.)
Article - Journal
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