Removal of radiocesium using cation exchange resin

Yuko Morita-Murase, Ryosuke Mizumura, Yoshitaka Tachibana, Hideko Kanazawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Cation exchange resins (calcium polystyrene sulfonate, Ca-resin and sodium polystyrene sulfonate, Na-resin) have been used as agents to improve hyperkerlemia. For removing 137Cs from the human body, the adsorption ability of the resin for 137Cs was examined and evaluated. Resin (0.03 g) and 137Cs (ca.1 kBq) were introduced into 3 mL of water, the Japanese Pharmacopoeia 1st fluid for a dissolution test (pH 1.2) and 2nd fluid (pH 6.8), respectively, and shaken. After 1-3 hours, the 137Cs adsorption (%) of Na-resin was 99 % in water, 60 % in a pH 1.2 fluid and, 66 % in a pH 6.8 fluid. By adding potassium, the 137Cs adsorption (%) of Ca-resin was reduced. However, the 137Cs adsorption (%) of Na-resin was almost unchanged. These results show that both resins have adsorption ability for 137Cs in the stomach and the intestines. Therefore, the proposed method will be an effective means in the case of a radiological emergency due to 137Cs.

Original languageEnglish
Pages (from-to)541-545
Number of pages5
Issue number6
Publication statusPublished - 2013 Jun 27


  • Calcium polystyrene sulfonate
  • Radiological emergency
  • Sodium polystyrene sulfonate

ASJC Scopus subject areas

  • Analytical Chemistry


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