Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Characterization of Particulate Matters in the Pripyat River in Chernobyl Related to Their Adsorption of Radiocesium with Inhibition Effect by Natural Organic Matter
Hiroki SugaQiaohui FanYasuo TakeichiKazuya TanakaHiroaki KondoVladimir V. KanivetsAya SakaguchiKenji KatoNobuhito InamiKazuhiko MaseKanta OnoYoshio Takahashi
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2014 Volume 43 Issue 7 Pages 1128-1130


Although cesium adsorbs onto the interlayer of clay minerals, coexisting natural organic matter (NOM) can inhibit this adsorption because of their blocking effect. A large amount of dissolved organic carbon (DOC) in the Pripyat River (= 18 mg L−1) is responsible for the large dissolved fraction of cesium in the river as suggested by cesium LIII-edge EXAFS. In addition, the carbon K-edge NEXAFS by STXM showed that humic acid coats clay minerals in the Pripyat River, which is responsible for the blocking effect.

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© 2014 The Chemical Society of Japan
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