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Decontamination of radioactive cesium from natural NaCl by amide-type open-chain crown ethers

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Abstract

An attempt has been made to develop a radiochemical methodology for the decontamination of a trace amount of radioactive cesium from a bulk amount of natural NaCl by liquid-liquid extraction (LLX). Open chain crown ethers, of amide type, namely, N,N,N",N"-tetraphenyl-3,6-dioxaoctanediamide (TDD), N,N,N",N"-tetraphenyl-3,6,9-trioxaundecanediamide and N,N"-dinaphthyl-N,N"-diphenyl-3,6-dioxaoctanediamide (DDD) have been chosen for this purpose. The separation factor between Cs and Na is the highest when 10-4M TDD dissolved in nitrobenzene is used as extractant and 0.4M picric acid at pH 5.0 is used as aqueous phase. About 60% Cs is extracted in this condition in a single run.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P.R. China

    Y. H. Wen & W. S. Liu

  2. Institute of Modern Physics, Chinese Academy of Science, Lanzhou, 730000, P.R. China

    Z. Qin & X. L. Wu

  3. Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700 064, India

    S. Lahiri

Authors
  1. Y. H. Wen
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  2. S. Lahiri
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  3. Z. Qin
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  4. X. L. Wu
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  5. W. S. Liu
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Wen, Y.H., Lahiri, S., Qin, Z. et al. Decontamination of radioactive cesium from natural NaCl by amide-type open-chain crown ethers. Journal of Radioanalytical and Nuclear Chemistry 253, 263–265 (2002). https://doi.org/10.1023/A:1019653910313

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