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Title: 135Cs/137Cs isotopic composition of environmental samples across Europe: Environmental transport and source term emission applications

Journal Article · · Journal of Environmental Radioactivity
 [1];  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)

135Cs/137Cs isotopic analyses represent an important tool for studying the fate and transport of radiocesium in the environment; in this work the 135Cs/137Cs isotopic composition in environmental samples taken from across Europe is reported. Surface soil and vegetation samples from western Russia, Ukraine, Austria, and Hungary show consistent aged thermal fission product 135Cs/137Cs isotope ratios of 0.58 ± 0.01 (age corrected to 1/1/15), with the exception of one sample of soil-moss from Hungary which shows an elevated 135Cs/137Cs ratio of 1.78 ± 0.12. With the exception of the outlier sample from Hungary, surface soil/vegetation data are in quantitative agreement with values previously reported for soils within the Chernobyl exclusion zone, suggesting that radiocesium at these locations is primarily composed of homogenous airborne deposition from Chernobyl. Seawater samples taken from the Irish Sea show 135Cs/137Cs isotope ratios of 1.22 ± 0.11 (age corrected to 1/1/15), suggesting aged thermal fission product Cs discharged from Sellafield. Furthermore, the differences in 135Cs/137Cs isotope ratios between Sellafield, Chernobyl, and global nuclear weapons testing fallout indicate that 135Cs/137Cs isotope ratios can be utilized to discriminate between and track radiocesium transport from different nuclear production source terms, including major emission sources in Europe.

Research Organization:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
2012-DN-130-NF0001-02; AC07-05ID14517
OSTI ID:
1294348
Alternate ID(s):
OSTI ID: 1397678
Report Number(s):
INL/JOU-15-36733; PII: S0265931X15301417
Journal Information:
Journal of Environmental Radioactivity, Vol. 151, Issue P1; ISSN 0265-931X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Cited By (4)

Fukushima Daiichi reactor source term attribution using cesium isotope ratios from contaminated environmental samples: 135 Cs/ 137 Cs isotopic analyses journal January 2016
Ultra-trace determination of the 135 Cs/ 137 Cs isotopic ratio by thermal ionization mass spectrometry with application to Fukushima marine sediment samples journal January 2019
135Cs activity and 135Cs/137Cs atom ratio in environmental samples before and after the Fukushima Daiichi Nuclear Power Plant accident journal April 2016
The role of mass spectrometry in radioactive contamination assessment after the Fukushima nuclear accident journal January 2018