Concentrations of Radionuclides and Trace Elements in Soils and Vegetation Around the DARHT Facility during 2004

Fresquez, P.R.

Los Alamos National Laboratory

关键词: Plants;    Elements;    Us Epa 60 Applied Life Sciences;    Lanl;    Trace Amounts;   

DOI  :  10.2172/836136
RP-ID  :  LA-14176
RP-ID  :  W-7405-ENG-36
RP-ID  :  836136

美国|英语

来源: UNT Digital Library

【 摘 要 】

Samples of soil, sediment, and unwashed overstory and understory vegetation were collected at four locations around the Dual-Axis Radiographic Hydrodynamic Test (DARHT) facility at Los Alamos National Laboratory (LANL). All samples were analyzed for concentrations of {sup 3}H, {sup 137}Cs, {sup 90}Sr, {sup 238}Pu, {sup 239,240}Pu, {sup 241}Am, {sup 234}U, {sup 235}U, {sup 238}U, Ag, As, Ba, Be, Cd, Cr, Cu, Hg, Ni, Pb, Sb, Se, and Tl. These results, which represent five years since the start of operations, were compared with baseline statistical reference level (BSRL) data established over a four-year-long preoperational period prior to DARHT operations, and to LANL and U.S. Environmental Protection Agency Screening Action Levels (SALs). Most radionuclides and trace elements in soil, sediment, and vegetation were below BSRL values and those soils/sediments that were above BSRLs were far below SALs.