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Title: Concentration Ratios for Cesium and Strontium in Produce Near Los Alamos

Abstract

The ratios of the concentrations of radionuclides in produce (fruits, vegetables, and grains) to the concentrations in the soil have been measured for cesium and strontium at locations near Los Alamos. The Soil, Foodstuffs, and Biota Team of the Meteorology and Air Quality Group of the Los Alamos National Laboratory (LANL) obtained the data at locations within a radius of 50 miles of LANL. The concentration ratios are in good agreement with previous measurements: 0.01 to 0.06 for cesium-137 and 0.1 to 0.5 for strontium-90 (wet-weight basis).

Authors:
Publication Date:
Research Org.:
Office of Scientific and Technical Information, Oak Ridge, TN; Los Alamos National Laboratory (LANL), Los Alamos, NM
Sponsoring Org.:
USDOE - National Nuclear Security Administration (NNSA)
OSTI Identifier:
881275
Report Number(s):
LA-14284
TRN: US200612%%787
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AIR QUALITY; CESIUM; CESIUM 137; CONCENTRATION RATIO; FOOD; METEOROLOGY; RADIOISOTOPES; SOILS; STRONTIUM; STRONTIUM 90; VEGETABLES; environmental monitoring, vegetation, radionuclides

Citation Formats

S. Salazar, M.McNaughton, P.R. Fresquez. Concentration Ratios for Cesium and Strontium in Produce Near Los Alamos. United States: N. p., 2006. Web. doi:10.2172/881275.
S. Salazar, M.McNaughton, P.R. Fresquez. Concentration Ratios for Cesium and Strontium in Produce Near Los Alamos. United States. doi:10.2172/881275.
S. Salazar, M.McNaughton, P.R. Fresquez. Wed . "Concentration Ratios for Cesium and Strontium in Produce Near Los Alamos". United States. doi:10.2172/881275. https://www.osti.gov/servlets/purl/881275.
@article{osti_881275,
title = {Concentration Ratios for Cesium and Strontium in Produce Near Los Alamos},
author = {S. Salazar, M.McNaughton, P.R. Fresquez},
abstractNote = {The ratios of the concentrations of radionuclides in produce (fruits, vegetables, and grains) to the concentrations in the soil have been measured for cesium and strontium at locations near Los Alamos. The Soil, Foodstuffs, and Biota Team of the Meteorology and Air Quality Group of the Los Alamos National Laboratory (LANL) obtained the data at locations within a radius of 50 miles of LANL. The concentration ratios are in good agreement with previous measurements: 0.01 to 0.06 for cesium-137 and 0.1 to 0.5 for strontium-90 (wet-weight basis).},
doi = {10.2172/881275},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2006},
month = {Wed Mar 01 00:00:00 EST 2006}
}

Technical Report:

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  • This Supplement Analysis (SA) has been prepared to determine if the Site-Wide Environmental Impact Statement for Continued Operations of Los Alamos National Laboratory (SWEIS) (DOE/EIS-0238) adequately addresses the environmental effects of recovery and storage for disposal of six strontium-90 (Sr-90) fueled radioisotope thermal electric generators (RTGs) at the Los Alamos National Laboratory (LANL) Technical Area (TA)-54, Area G, or if the SWEIS needs to be supplemented. DOE's National Nuclear Security Administration (NNSA) proposed to recover and store six Sr-90 RTGs from the commercial sector as part of its Offsite-Source Recovery Project (OSRP). The OSRP focuses on the proactive recovery andmore » storage of unwanted radioactive sealed sources exceeding the US Nuclear Regulatory Commission (NRC) limits for Class C low-level waste (also known as Greater than Class C waste, or GTCC). In response to the events of September 11, 2001, NRC conducted a risk-based evaluation of potential vulnerabilities to terrorist threats involving NRC-licensed nuclear facilities and materials. NRC's evaluation concluded that possession of unwanted radioactive sealed sources with no disposal outlet presents a potential vulnerability (NRC 2002). In a November 25, 2003 letter to the manager of the NNSA's Los Alamos Site Office, the NRC Office of Nuclear Security and Incident Response identified recovery of several Sr-90 RTGs as the highest priority and requested that DOE take whatever actions necessary to recovery these sources as soon as possible. This SA specifically compares key impact assessment parameters of this proposal to the offsite source recovery program evaluated in the SWEIS and a subsequent SA that evaluated a change to the approach of a portion of the recovery program. It also provides an explanation of any differences between the Proposed Action and activities described in the previous SWEIS and SA analyses.« less
  • This report describes produce and fish sampling procedures of the Environmental Surveillance Group at the Los Alamos National Laboratory. The program monitors foodstuffs and fish for possible radioactive contamination from Laboratory operations. Data gathered in this program on radionuclide concentrations help to estimate radiation doses to Laboratory personnel and the public. 3 references, 7 figures, 2 tables.
  • Laboratory experiments were conducted to evaluate the sorptivity of cesium onto Los Alamos soils under controlled experimental conditions. Four soil profiles were collected and each soil profile which is broken into layers according to previously identified soil horizons were studied. Batch sorption isotherms were studied to quantify the chemical reactivity of each soil horizon toward cesium ion. Radioactive cesium-137 was used as sorbent and gamma counting was used to quantify the amount of sorption. Desorption experiments were conducted after the sorption experiments. Batch desorption isotherms were studied to quantify the desorption of presorbed cesium from these Los Alamos soils. Thismore » study suggests cesium may sorb strongly and irreversibly on most Los Alamos soils. The amount of cesium sorption and desorption is possibly related to the clay content of the soil sample since subsurface sample has a higher clay content than that of surface sample.« less