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Title: Improvements to sample processing and measurement to enable more widespread environmental application of tritium

Previous measurements have demonstrated the wealth of information that tritium (T) can provide on environmentally relevant processes. Here, we present modifications to sample preparation approaches that enable T measurement by proportional counting on small sample sizes equivalent to 120 mg of water and demonstrate the accuracy of these methods on a suite of standardized water samples. We also identify a current quantification limit of 92.2 TU which, combined with our small sample sizes, correlates to as little as 0.00133 Bq of total T activity. Furthermore, this enhanced method should provide the analytical flexibility needed to address persistent knowledge gaps in our understanding of both natural and artificial T behavior in the environment.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Report Number(s):
PNNL-SA-120318
Journal ID: ISSN 0969-8043; PII: S0969804316305498
Grant/Contract Number:
AC05-7601830
Type:
Accepted Manuscript
Journal Name:
Applied Radiation and Isotopes
Additional Journal Information:
Journal Volume: 126; Journal ID: ISSN 0969-8043
Publisher:
Elsevier
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCES; proportional counter; organically bound tritium; low background
OSTI Identifier:
1344912

Moran, James, Alexander, Thomas, Aalseth, Craig, Back, Henning, Mace, Emily, Overman, Cory, Seifert, Allen, and Freeburg, Wilcox. Improvements to sample processing and measurement to enable more widespread environmental application of tritium. United States: N. p., Web. doi:10.1016/j.apradiso.2017.01.033.
Moran, James, Alexander, Thomas, Aalseth, Craig, Back, Henning, Mace, Emily, Overman, Cory, Seifert, Allen, & Freeburg, Wilcox. Improvements to sample processing and measurement to enable more widespread environmental application of tritium. United States. doi:10.1016/j.apradiso.2017.01.033.
Moran, James, Alexander, Thomas, Aalseth, Craig, Back, Henning, Mace, Emily, Overman, Cory, Seifert, Allen, and Freeburg, Wilcox. 2017. "Improvements to sample processing and measurement to enable more widespread environmental application of tritium". United States. doi:10.1016/j.apradiso.2017.01.033. https://www.osti.gov/servlets/purl/1344912.
@article{osti_1344912,
title = {Improvements to sample processing and measurement to enable more widespread environmental application of tritium},
author = {Moran, James and Alexander, Thomas and Aalseth, Craig and Back, Henning and Mace, Emily and Overman, Cory and Seifert, Allen and Freeburg, Wilcox},
abstractNote = {Previous measurements have demonstrated the wealth of information that tritium (T) can provide on environmentally relevant processes. Here, we present modifications to sample preparation approaches that enable T measurement by proportional counting on small sample sizes equivalent to 120 mg of water and demonstrate the accuracy of these methods on a suite of standardized water samples. We also identify a current quantification limit of 92.2 TU which, combined with our small sample sizes, correlates to as little as 0.00133 Bq of total T activity. Furthermore, this enhanced method should provide the analytical flexibility needed to address persistent knowledge gaps in our understanding of both natural and artificial T behavior in the environment.},
doi = {10.1016/j.apradiso.2017.01.033},
journal = {Applied Radiation and Isotopes},
number = ,
volume = 126,
place = {United States},
year = {2017},
month = {1}
}