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Accession Number ADA582004
Title Toxicities of TNT and RDX to Terrestrial Plants in Five Soils with Contrasting Characteristics.
Publication Date Jul 2013
Media Count 54p
Personal Author C. T. Phillips C. W. Kurnas J. E. Kolakowski R. T. Checkai
Abstract This study was designed to produce scientifically defensible benchmark data for the development of ecological-based soil screening levels for 2,4,6-trinitrotoluene (TNT) and hexahydro-1,3,5- trinitro-1,3,5-triazine (RDX) for terrestrial plants. The physical and chemical properties of different soils may alter the bioavailability and toxicity of TNT and RDX to plant species. We investigated individual ecotoxicities of TNT and RDX to alfalfa (Medicago sativa L.), Japanese millet (J. millet; Echinochloa crus-galli L. Beauv.), and perennial ryegrass (Lolium perenne L.) in five natural soils that varied in pH, organic matter, and clay contents. On the basis of EC50 values (the TNT or RDX concentrations that produce 50% reductions in selected measurement endpoints) and 95% confidence intervals for shoot fresh and dry masses (SDM), TNT weathered-and-aged (W-A) in soils significantly reduced.
Keywords Bioavailability
Chemical properties
Earth(Planet)
Ecological soil screening level
Ecotoxicities
Moisture content
Natural soil
Organic materials
Ph factor
Physical properties
Rdx
Soils
Terrestrial plants
Tnt
Toxicity
Toxicity assessment
Weathering-and-aging

 
Source Agency Non Paid ADAS
NTIS Subject Category 57B - Biochemistry
48E - Soil Sciences
50D - Soil & Rock Mechanics
74D - Chemical, Biological, & Radiological Warfare
Corporate Author Edgewood Chemical Biological Center, Aberdeen Proving Ground, MD.
Document Type Technical report
Title Note Final rept. Apr 2001-Feb 2007.
NTIS Issue Number 1326
Contract Number N/A

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