Deposition of 236U from atmospheric nuclear testing in Washington state (USA) and the Pechora region (Russian Arctic)

Michael E Ketterer, Aran D. Groves, Brian J. Strick, Craig S. Asplund, Vivienne J. Jones

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Stratospheric fallout-derived 236U has been detected by sector field ICPMS at two field locations for which our laboratory possessed available archived samples: A) four soil cores from Washington state (northwestern USA) and B) sediment cores from three small lakes in the Pechora region (Russian Arctic). Four Washington state soil cores exhibit 236U inventories of 8.1 ± 1.3, 11.1 ± 0.9, 18 ± 2, and 30.2 ± 3.9 Tatoms/m2; the respective 239Pu contents are 52.9 ± 3.5, 67 ± 3, 71 ± 2, and 151 ± 2 Tatoms/m2. A 236U/239Pu atom ratio of 0.19 ± 0.04 (1 SD) has been determined from the Washington state soil cores. The three Pechora region lake cores each exhibit coincident maxima in their 236U and 239Pu atom concentration profiles. The 236U/238U atom ratios are controlled by two independent factors; 236U is from fallout deposition and 238U concentrations are a property of the geochemical distribution of naturally occurring U. A 236U/238U atom ratio as high as 8.9 × 10-6 has been observed for acid-leached soils containing Pu solely derived from bomb-test fallout. Accordingly, a non-zero 236U background from stratospheric fallout must be recognized and taken into account when detectable 236U is used to infer specific local or regional influences of reactor-irradiated U.

Original languageEnglish (US)
Pages (from-to)143-149
Number of pages7
JournalJournal of Environmental Radioactivity
Volume118
DOIs
StatePublished - Apr 2013

Fingerprint

Arctic Regions
Fallout
fallout
Soil
Soils
Atoms
Upper atmosphere
Testing
Lakes
Bombs
soil
lake
acid soil
sediment core
Sediments
Equipment and Supplies
Acids
Arctic region

Keywords

  • U
  • Atmospheric nuclear testing
  • Plutonium isotopes
  • Uranium isotopes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Waste Management and Disposal
  • Pollution

Cite this

Deposition of 236U from atmospheric nuclear testing in Washington state (USA) and the Pechora region (Russian Arctic). / Ketterer, Michael E; Groves, Aran D.; Strick, Brian J.; Asplund, Craig S.; Jones, Vivienne J.

In: Journal of Environmental Radioactivity, Vol. 118, 04.2013, p. 143-149.

Research output: Contribution to journalArticle

Ketterer, Michael E ; Groves, Aran D. ; Strick, Brian J. ; Asplund, Craig S. ; Jones, Vivienne J. / Deposition of 236U from atmospheric nuclear testing in Washington state (USA) and the Pechora region (Russian Arctic). In: Journal of Environmental Radioactivity. 2013 ; Vol. 118. pp. 143-149.
@article{a59f3b99a57449319b174ddc29a6f75f,
title = "Deposition of 236U from atmospheric nuclear testing in Washington state (USA) and the Pechora region (Russian Arctic)",
abstract = "Stratospheric fallout-derived 236U has been detected by sector field ICPMS at two field locations for which our laboratory possessed available archived samples: A) four soil cores from Washington state (northwestern USA) and B) sediment cores from three small lakes in the Pechora region (Russian Arctic). Four Washington state soil cores exhibit 236U inventories of 8.1 ± 1.3, 11.1 ± 0.9, 18 ± 2, and 30.2 ± 3.9 Tatoms/m2; the respective 239Pu contents are 52.9 ± 3.5, 67 ± 3, 71 ± 2, and 151 ± 2 Tatoms/m2. A 236U/239Pu atom ratio of 0.19 ± 0.04 (1 SD) has been determined from the Washington state soil cores. The three Pechora region lake cores each exhibit coincident maxima in their 236U and 239Pu atom concentration profiles. The 236U/238U atom ratios are controlled by two independent factors; 236U is from fallout deposition and 238U concentrations are a property of the geochemical distribution of naturally occurring U. A 236U/238U atom ratio as high as 8.9 × 10-6 has been observed for acid-leached soils containing Pu solely derived from bomb-test fallout. Accordingly, a non-zero 236U background from stratospheric fallout must be recognized and taken into account when detectable 236U is used to infer specific local or regional influences of reactor-irradiated U.",
keywords = "U, Atmospheric nuclear testing, Plutonium isotopes, Uranium isotopes",
author = "Ketterer, {Michael E} and Groves, {Aran D.} and Strick, {Brian J.} and Asplund, {Craig S.} and Jones, {Vivienne J.}",
year = "2013",
month = "4",
doi = "10.1016/j.jenvrad.2012.10.007",
language = "English (US)",
volume = "118",
pages = "143--149",
journal = "Journal of Environmental Radioactivity",
issn = "0265-931X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Deposition of 236U from atmospheric nuclear testing in Washington state (USA) and the Pechora region (Russian Arctic)

AU - Ketterer, Michael E

AU - Groves, Aran D.

AU - Strick, Brian J.

AU - Asplund, Craig S.

AU - Jones, Vivienne J.

PY - 2013/4

Y1 - 2013/4

N2 - Stratospheric fallout-derived 236U has been detected by sector field ICPMS at two field locations for which our laboratory possessed available archived samples: A) four soil cores from Washington state (northwestern USA) and B) sediment cores from three small lakes in the Pechora region (Russian Arctic). Four Washington state soil cores exhibit 236U inventories of 8.1 ± 1.3, 11.1 ± 0.9, 18 ± 2, and 30.2 ± 3.9 Tatoms/m2; the respective 239Pu contents are 52.9 ± 3.5, 67 ± 3, 71 ± 2, and 151 ± 2 Tatoms/m2. A 236U/239Pu atom ratio of 0.19 ± 0.04 (1 SD) has been determined from the Washington state soil cores. The three Pechora region lake cores each exhibit coincident maxima in their 236U and 239Pu atom concentration profiles. The 236U/238U atom ratios are controlled by two independent factors; 236U is from fallout deposition and 238U concentrations are a property of the geochemical distribution of naturally occurring U. A 236U/238U atom ratio as high as 8.9 × 10-6 has been observed for acid-leached soils containing Pu solely derived from bomb-test fallout. Accordingly, a non-zero 236U background from stratospheric fallout must be recognized and taken into account when detectable 236U is used to infer specific local or regional influences of reactor-irradiated U.

AB - Stratospheric fallout-derived 236U has been detected by sector field ICPMS at two field locations for which our laboratory possessed available archived samples: A) four soil cores from Washington state (northwestern USA) and B) sediment cores from three small lakes in the Pechora region (Russian Arctic). Four Washington state soil cores exhibit 236U inventories of 8.1 ± 1.3, 11.1 ± 0.9, 18 ± 2, and 30.2 ± 3.9 Tatoms/m2; the respective 239Pu contents are 52.9 ± 3.5, 67 ± 3, 71 ± 2, and 151 ± 2 Tatoms/m2. A 236U/239Pu atom ratio of 0.19 ± 0.04 (1 SD) has been determined from the Washington state soil cores. The three Pechora region lake cores each exhibit coincident maxima in their 236U and 239Pu atom concentration profiles. The 236U/238U atom ratios are controlled by two independent factors; 236U is from fallout deposition and 238U concentrations are a property of the geochemical distribution of naturally occurring U. A 236U/238U atom ratio as high as 8.9 × 10-6 has been observed for acid-leached soils containing Pu solely derived from bomb-test fallout. Accordingly, a non-zero 236U background from stratospheric fallout must be recognized and taken into account when detectable 236U is used to infer specific local or regional influences of reactor-irradiated U.

KW - U

KW - Atmospheric nuclear testing

KW - Plutonium isotopes

KW - Uranium isotopes

UR - http://www.scopus.com/inward/record.url?scp=84873145638&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873145638&partnerID=8YFLogxK

U2 - 10.1016/j.jenvrad.2012.10.007

DO - 10.1016/j.jenvrad.2012.10.007

M3 - Article

C2 - 23376314

AN - SCOPUS:84873145638

VL - 118

SP - 143

EP - 149

JO - Journal of Environmental Radioactivity

JF - Journal of Environmental Radioactivity

SN - 0265-931X

ER -