239 + 240Pu from “contaminant” to soil erosion tracer: Where do we stand?

C. Alewell, A. Pitois, K. Meusburger, Michael E Ketterer, L. Mabit

Research output: Contribution to journalReview article

8 Citations (Scopus)

Abstract

As soil erosion is the major threat to one of the most essential resources of humankind, methods to quantify soil redistribution are crucial for agro-environmental assessment as well as for optimisation of soil conservation practices. The use of fallout radionuclides (FRN) as soil redistribution tracers is, next to modelling, currently the most promising approach for assessing soil erosion. This review aims to evaluate the suitability of Plutonium (Pu) in general and the 239 + 240Pu isotopes in particular as soil redistribution tracers. It provides information on its origin, distribution and behaviour in soils and in the environment. Analytical methods, their recent advances as well as limitations, are discussed. To establish the current state of knowledge and to deepen our understanding, particular attention is given to the main existing achievements and findings based on using 239 + 240Pu as soil erosion tracer in agroecosystems. We further discuss similarities and differences to other more mature FRN techniques such as the 137Cs based approach which has been until now the most widely used method. We conclude that 239 + 240Pu has the potential to become the next generation of soil redistribution tracer compared to the more mature FRN techniques mostly due to (i) its long half-life guaranteeing its long-term availability in the environment, (ii) its analytical advantage in terms of measurement precision and measurement time and (iii) its greater homogeneity at reference sites due to its main origin from past atmospheric nuclear weapon tests. In identifying some key future research opportunities and needs, we hope to refine the efficiency of this promising agro-environmental tracer for effective soil redistribution studies under future climate and land use change.

Original languageEnglish (US)
Pages (from-to)107-123
Number of pages17
JournalEarth-Science Reviews
Volume172
DOIs
StatePublished - Sep 1 2017
Externally publishedYes

Fingerprint

soil erosion
tracer
pollutant
fallout
radionuclide
soil
nuclear weapon
plutonium
soil conservation
agricultural ecosystem
environmental assessment
half life
homogeneity
land use change
analytical method
isotope
climate
resource
modeling
method

Keywords

  • Cs
  • Fallout radionuclides
  • FRN
  • Plutonium
  • Review
  • Soil degradation

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

239 + 240Pu from “contaminant” to soil erosion tracer : Where do we stand? / Alewell, C.; Pitois, A.; Meusburger, K.; Ketterer, Michael E; Mabit, L.

In: Earth-Science Reviews, Vol. 172, 01.09.2017, p. 107-123.

Research output: Contribution to journalReview article

Alewell, C. ; Pitois, A. ; Meusburger, K. ; Ketterer, Michael E ; Mabit, L. / 239 + 240Pu from “contaminant” to soil erosion tracer : Where do we stand?. In: Earth-Science Reviews. 2017 ; Vol. 172. pp. 107-123.
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