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Complexation of europium and uranium by humic acids analyzed by capillary electrophoresis-inductively coupled plasma mass spectrometry.
MedLine Citation:
PMID:  22648819     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Investigations of the mobility of radioactive and nonradioactive substances in the environment are important tasks for the development of a future disposal in deep geological formations. Dissolved organic matter (DOM) can play an important role in the mobilization of metal ions due to complexation. In this study, we investigate the complexation behavior of humic acid (HA) as a model substance for DOM and its influence on the migration of europium as homologue for the actinide americium and uranium as the principal component of nuclear fuel. As speciation technique, capillary electrophoresis (CE) was hyphenated with inductively coupled plasma mass spectrometry (ICP-MS). For the study, 0.5 mg·L(-1) of the metals and 25 mg·L(-1) of (purified Aldrich) HA and an aqueous solution sodium-perchlorate with an ionic strength of 10 mM at pH 5 were used. CE-ICP-MS clearly shows the different speciation of the triple positively charged europium and the double positively charged uranyl cation with HA.
Authors:
Christina Möser; Ralf Kautenburger; Horst Philipp Beck
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electrophoresis     Volume:  33     ISSN:  1522-2683     ISO Abbreviation:  Electrophoresis     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-05-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8204476     Medline TA:  Electrophoresis     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1482-7     Citation Subset:  IM    
Copyright Information:
© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Institute of Inorganic and Analytical Chemistry and Radiochemistry, Saarland University, Saarbrücken, Germany.
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