TITLE

Ecotoxicity of Aged Uranium in Soil Using Plant, Earthworm and Microarthropod Toxicity Tests

AUTHOR(S)
Sheppard, S.; Stephenson, G.
PUB. DATE
January 2012
SOURCE
Bulletin of Environmental Contamination & Toxicology;Jan2012, Vol. 88 Issue 1, p43
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Discrepancies about probable no effect concentrations (PNEC) for uranium in soils may be because toxicity tests used freshly contaminated soils. This study used 3 soils amended with a range of uranium concentrations 10 years previously. The toxicity tests with northern wheatgrass ( Elymus lanceolatus); earthworm ( Eisenia andrei) were not affected below ~1,000 mg U kg, and the soil arthropod Folsomia candida was not affected below ~350 mg U kg. Survival of Orthonychiurus folsomi was diminished 20% (EC) by ~85-130 mg U kg, supporting a PNEC in the range of 100-250 mg U kg as derived previously.
ACCESSION #
70119472

 

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