Metal distributions in New Orleans following Hurricanes Katrina and Rita: A continuation study

被引:32
作者
Cobb, George P.
Abel, Michael T.
Rainwater, Thomas R.
Austin, Galen P.
Cox, Stephen B.
Kendall, Ronald J.
Marsland, Eric J.
Anderson, Todd A.
Leftwich, Blair D.
Zak, John C.
Presley, Steven M.
机构
[1] Texas Tech Univ, Inst Environm & Human Hlth, Dept Environm Toxicol, Lubbock, TX 79409 USA
[2] Jeffersonian Inst, Inst Environm & Human Hlth Field Stn, Jefferson, TX 75657 USA
[3] Texas Tech Univ, Dept Biol Sci, Lubbock, TX 79409 USA
[4] TraceAnal Inc, Lubbock, TX 79424 USA
关键词
D O I
10.1021/es060041g
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In late October 2005, twenty-seven metals were determined in soils and sediment layers deposited by floodwaters (flood sediments) within New Orleans, Louisiana. Samples originated from 43 sites along four transects, at an industrial canal, and near the Superdome. The sampling design encompassed flooded and nonflooded areas as well as differing economic strata within the city. Results from this effort confirmed findings of our previous study designed to quantify contaminant profiles in the aftermath of Hurricane Katrina. The expanded sampling from this most recent investigation revealed that arsenic (As) and lead (Pb) concentrations exceeded United States Environmental Protection Agency (USEPA) soil screening criteria indiscriminately throughout the city. However, As and Pb concentrations were lower along St. Charles Avenue, an area largely unaffected by hurricane related flooding. Toxicant concentrations did not exceed soil screening criteria values for lead within any flood sediments or for 32 of 37 soil samples, but arsenic concentrations in 40 of 43 samples exceeded screening criteria.
引用
收藏
页码:4571 / 4577
页数:7
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