title: Recommendations for radioecological screening levels for terrestrial plants.
abstract: This paper presents recommended radionuclide concentrations in soil that may be associated with a dose of 10 mGy d(-1) (1.0 rad d(-1)) to sensitive tissues of higher plants. A dose rate of 10 mGy d(-1) is used in this investigation as a basis for radioecological screening because it corresponds to a dose rate recommended by the IAEA specifically for terrestrial plants as a dose that is not anticipated to have an adverse effect on terrestrial ecosystems. In deriving these radioecological screening levels for plants, specific consideration is given to the internal and external exposure of the root hairs of higher plants to both penetrating and non-penetrating radiation in soil. None of the radioecological screening levels for plants evaluated in this paper are more restrictive than the default soil screening levels recommended by the NCRP for the protection of humans.
authors.affiliation: Sanford Cohen & Associates, Inc., 6858 Old Dominion Drive, McLean, Virginia 22101, USA. jmauro@scainc.com
authors.forename: John
authors.initials: J
authors.lastname: Mauro
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D017753:Ecosystem; D004781:Environmental Exposure / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods / Q000592:standards; D008452:Maximum Allowable Concentration; D018517:Plant Roots / Q000378:metabolism / Q000528:radiation effects; D010944:Plants / Q000378:metabolism* / Q000528:radiation effects*; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis; D011874:Radiometry / Q000379:methods* / Q000592:standards; D012990:Soil Pollutants, Radioactive / Q000032:analysis* / Q000493:pharmacokinetics*
chemical_list: D000393:Air Pollutants; D011868:Radioisotopes; D012990:Soil Pollutants, Radioactive