Correlation between macronutirients and radionuclides

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Discussion Overview

The discussion revolves around the relationship between macronutrients (nitrogen, phosphorus, potassium) and radionuclides (uranium, thorium, potassium) in sediments, exploring whether the presence of macronutrients influences the amount of radionuclides and how they may be related in terms of their interactions with clay particles.

Discussion Character

  • Exploratory, Debate/contested, Technical explanation

Main Points Raised

  • One participant questions the rationale behind the assumption that macronutrients would influence the amount of radionuclides present.
  • Another participant suggests that both macronutrients and radionuclides exist in clay particles, which have a high exchange capacity, potentially facilitating interactions.
  • It is proposed that macronutrient potassium (K) increases the presence of radionuclide potassium (K) in sediments.
  • A participant emphasizes the need for more background information to better understand the question and mentions that thorium is not mobile and does not interact with clays.
  • Concerns are raised regarding uranium's mobility and its presence in fertilizers, particularly phosphate fertilizers derived from uranium-containing ores.
  • A later reply questions why radionuclides cannot be embedded in clays despite their high cation exchange capacity.

Areas of Agreement / Disagreement

Participants express differing views on the interactions between macronutrients and radionuclides, with some proposing potential relationships while others challenge the assumptions and highlight the complexities involved. The discussion remains unresolved regarding the extent and nature of these interactions.

Contextual Notes

The discussion includes assumptions about the mobility of thorium and uranium, the role of clay particles, and the implications of fertilizer composition, which may not be fully explored or agreed upon.

hariprasath
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do the presence of macronutrients (N,P,K) increase the amount of radionuclides (U,Th,K) in the sediments. how are they related?
 
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Why should they?
 
As both exist in clay particles, that have high exchange capacity?
 
Yes, Macronutricient K increases radionuclide K
 
thank you sir.
 
As Borek already told you, it would be good if you were to give us some more background for your question.
I told you already in another thread that thorium isn't mobile and therefore won't interact with clays.
For uranium google spits up quite some literature, e.g. :
http://tubaf.qucosa.de/fileadmin/data/qucosa/documents/6240/final%20version%20of%20Diss_SB_BM_BPF_Bibo.pdf
What I think is also important is the point that many fertilizers contain uranium or radium, especially phosphate fertilizers as they are produced from uranium containing phosphate ores.
 
i got the point regarding. thank you. since clay particles have high cation exchange capacity, why can't the radinuclides can be embbeded in clays??
 

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