Journal of Radioanalytical and Nuclear Chemistry

, Volume 249, Issue 2, pp 283–288 | Cite as

The gamma-radiolysis of HEDTA in a simulated, mixed waste

  • A. P. TosteEmail author


The γ -radiolysis of the parent compound N-(2-hydroxyethyl)ethylenediaminetriaceticacid (HEDTA) in a simulant of a Hanford mixed waste, at a γ -dose of7.5 . 106±10% R, yielded 94.4% degradation. HEDTA radiolysisyielded four degradation products: glyoxylic acid, N-( nitroso)iminodiaceticacid (NIDA) and 2 dicarboxylic acids, ethandioic (oxalic) and propandioic(malonic) acids. Glyoxylic acid had been identified in previous studies byour laboratory as N-hydroxymethyl-N-methyliminoacetic acid (HMMIA). Promptedby studies from another laboratory, the chelator fragment previously reportedby our laboratory as N-(methylamine)iminodiacetic acid (MAIDA) is re-identifiedas NIDA. A methylamine moiety previously believed to be present in MAIDA,and several other chelator fragments, as well, has been re-identified as anitroso group.


Physical Chemistry Inorganic Chemistry Degradation Product Parent Compound Dicarboxylic Acid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Kluwer Academic Publishers/Akadémiai Kiadó 2001

Authors and Affiliations

  1. 1.Department of ChemistrySouthwest Missouri State UniversitySpringfieldUSA

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