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Title: Development of a standardized sequential extraction protocol for simultaneous extraction of multiple actinide elements

Sequential extraction is a useful technique for assessing the potential to leach actinides from soils; however, current literature lacks uniformity in experimental details, making direct comparison of results impossible. This work continued development toward a standardized five-step sequential extraction protocol by analyzing extraction behaviors of 232Th, 238U, 239,240Pu and 241Am from lake and ocean sediment reference materials. Results produced a standardized procedure after creating more defined reaction conditions to improve method repeatability. A NaOH fusion procedure is recommended following sequential leaching for the complete dissolution of insoluble species.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4]
  1. Univ. of Nevada, Las Vegas, NV (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
  2. Univ. of Nevada, Las Vegas, NV (United States)
  3. Univ. of Nevada, Las Vegas, NV (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Colorado State Univ., Fort Collins, CO (United States). Dept. of Environmental & Radiological Health Sciences
Publication Date:
Report Number(s):
LLNL-JRNL-705688
Journal ID: ISSN 0236-5731; TRN: US1700878
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Journal of Radioanalytical and Nuclear Chemistry
Additional Journal Information:
Journal Volume: 312; Journal Issue: 1; Journal ID: ISSN 0236-5731
Publisher:
Springer
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; sequential extraction; extraction chromatography; actinide; NIST 4354; NIST 4357
OSTI Identifier:
1349001