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Bull Environ Contam Toxicol. 2012 Jan;88(1):43-7. doi: 10.1007/s00128-011-0442-5. Epub 2011 Oct 28.

Ecotoxicity of aged uranium in soil using plant, earthworm and microarthropod toxicity tests.

Author information

1
ECOMatters Inc., 24 Aberdeen Avenue, Pinawa, MB, R0E 1L0, Canada. sheppards@ecomatters.com

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(-1), and the soil arthropod Folsomia candida was not affected below ~350 mg U kg(-1). Survival of Orthonychiurus folsomi was diminished 20% (EC(20)) by ~85-130 mg U kg(-1), supporting a PNEC in the range of 100-250 mg U kg(-1) as derived previously.

PMID:
22033655
DOI:
10.1007/s00128-011-0442-5
[Indexed for MEDLINE]

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