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Title: Uranium mobility across annual growth rings in three deciduous tree species

Abstract

Black walnut (Juglans nigra), slippery elm (Ulmus rubra), and white ash (Fraxinus americana) trees were evaluated as potential archives of past uranium (U) contamination. Like other metals, U mobility in annual growth rings of trees is potentially dependent on the tree species. Uranium concentrations and isotopic compositions (masses 234, 235, 236, and 238) were analyzed by thermal ionization mass spectrometry to test the efficacy of using tree rings to retroactively monitor U pollution from the FFMPC, a U purification facility operating from 1951 to 1989. This study found non-natural U (depleted U and detectable 236U) in growth rings of all three tree species that pre-dated the start of operations at FFMPC and compositional trends that did not correspond with known contamination events. Therefore, the annual growth rings of these tree species cannot be used to reliably monitor the chronology of U contamination.

Authors:
ORCiD logo; ORCiD logo; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1439005
Report Number(s):
PNNL-SA-130621
Journal ID: ISSN 0265-931X
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Environmental Radioactivity; Journal Volume: 182; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
uranium mobility; black walnut; slippery elm; white ash; contamination

Citation Formats

McHugh, Kelly C., Widom, Elisabeth, Spitz, Henry B., Wiles, Gregory C., and Glover, Sam E. Uranium mobility across annual growth rings in three deciduous tree species. United States: N. p., 2018. Web. doi:10.1016/j.jenvrad.2017.10.021.
McHugh, Kelly C., Widom, Elisabeth, Spitz, Henry B., Wiles, Gregory C., & Glover, Sam E. Uranium mobility across annual growth rings in three deciduous tree species. United States. doi:10.1016/j.jenvrad.2017.10.021.
McHugh, Kelly C., Widom, Elisabeth, Spitz, Henry B., Wiles, Gregory C., and Glover, Sam E. Thu . "Uranium mobility across annual growth rings in three deciduous tree species". United States. doi:10.1016/j.jenvrad.2017.10.021.
@article{osti_1439005,
title = {Uranium mobility across annual growth rings in three deciduous tree species},
author = {McHugh, Kelly C. and Widom, Elisabeth and Spitz, Henry B. and Wiles, Gregory C. and Glover, Sam E.},
abstractNote = {Black walnut (Juglans nigra), slippery elm (Ulmus rubra), and white ash (Fraxinus americana) trees were evaluated as potential archives of past uranium (U) contamination. Like other metals, U mobility in annual growth rings of trees is potentially dependent on the tree species. Uranium concentrations and isotopic compositions (masses 234, 235, 236, and 238) were analyzed by thermal ionization mass spectrometry to test the efficacy of using tree rings to retroactively monitor U pollution from the FFMPC, a U purification facility operating from 1951 to 1989. This study found non-natural U (depleted U and detectable 236U) in growth rings of all three tree species that pre-dated the start of operations at FFMPC and compositional trends that did not correspond with known contamination events. Therefore, the annual growth rings of these tree species cannot be used to reliably monitor the chronology of U contamination.},
doi = {10.1016/j.jenvrad.2017.10.021},
journal = {Journal of Environmental Radioactivity},
number = C,
volume = 182,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}