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Title: Rapid determination of actinides in seawater samples

Journal Article · · Journal of Radioanalytical and Nuclear Chemistry
 [1];  [1];  [1];  [1];  [2]
  1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
  2. PG Research Foundation, Lisle, IL (United States)

A new rapid method for the determination of actinides in seawater samples has been developed at the Savannah River National Laboratory. The actinides can be measured by alpha spectrometry or inductively-coupled plasma mass spectrometry. The new method employs novel pre-concentration steps to collect the actinide isotopes quickly from 80 L or more of seawater. Actinides are co-precipitated using an iron hydroxide co-precipitation step enhanced with Ti+3 reductant, followed by lanthanum fluoride co-precipitation. Stacked TEVA Resin and TRU Resin cartridges are used to rapidly separate Pu, U, and Np isotopes from seawater samples. TEVA Resin and DGA Resin were used to separate and measure Pu, Am and Cm isotopes in seawater volumes up to 80 L. This robust method is ideal for emergency seawater samples following a radiological incident. It can also be used, however, for the routine analysis of seawater samples for oceanographic studies to enhance efficiency and productivity. In contrast, many current methods to determine actinides in seawater can take 1–2 weeks and provide chemical yields of ~30–60 %. This new sample preparation method can be performed in 4–8 h with tracer yields of ~85–95 %. By employing a rapid, robust sample preparation method with high chemical yields, less seawater is needed to achieve lower or comparable detection limits for actinide isotopes with less time and effort.

Research Organization:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC09-08SR22470
OSTI ID:
1159457
Report Number(s):
SRNL-STI-2014-00091
Journal Information:
Journal of Radioanalytical and Nuclear Chemistry, Vol. 300, Issue 3; ISSN 0236-5731
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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Cited By (5)

A rapid and efficient automated method for the sequential separation of plutonium and radiostrontium in seawater journal September 2014
Rapid fusion method for the determination of Pu, Np, and Am in large soil samples journal February 2015
Rapid method for accurate determination of actinides (U, Th, Pu and Am) in water samples for emergency response journal November 2017
Performance comparison of experimental liquid scintillation cocktails journal September 2018
Establishing rapid analysis of Pu isotopes in seawater to study the impact of Fukushima nuclear accident in the Northwest Pacific journal January 2018