Article
Licensed
Unlicensed Requires Authentication

Radioiodination of humic substances

  • and
Published/Copyright: May 28, 2010
Radiochimica Acta
From the journal Radiochimica Acta Volume 98 Issue 6

Abstract

The known IODO-GEN™-method [1] was adapted for radiolabeling of humic and fulvic acids with 131I. The water insoluble oxidizing agent 1,3,4,6tetrachloro-3α,6α-diphenylglycoluril (IODO-GEN™) forms an iodous ion species (I+), which undergoes an electrophilic I/H-substitution on aromatic moieties of the humic and fulvic acids. This method offers mild conditions with a lesser extent of oxidative alterations of the target molecule, accompanied by an easy handling due to the virtual water-insolubility of the oxidizing agent. The method was optimized and different techniques were tested for the purification of the radioiodinated humic material. The yield of the labeling procedure varies between 45 and 75% depending on the provenance of the humic material and the applied purification method. A specific activity up to 40 MBq/mg was achieved. Furthermore, the known inherent photo-susceptibility of the iodinated humic substance and the influence of reducing agents were verified. An additional release of 131I up to 20% and up to 35%, respectively were observed.

Keywords: Humic substances; Radioiodination; IODO-GENTM; Labeling
* Correspondence address: Institute of Interdisciplinary Isotope Research, Permoserstr. 15, 04318 Leipzig, Deutschland,
Published Online: 2010-5-28
Published in Print: 2010-6-1

© by Oldenbourg Wissenschaftsverlag, München, Germany

Articles in the same Issue

  1. Influence of nitric acid and plutonium concentrations in dissolver solution of mixed oxide fuel on decontamination factors for uranyl nitrate hexahydrate crystal
  2. Gas-phase isothermal chromatography with short-lived technetium isotopes
  3. Coprecipitation of gadolinium with calcium sulphate dihydrate
  4. Radioiodination of humic substances
  5. Sorption of radiocobalt and other activation product radionuclides on titanium oxide material CoTreat®
  6. Simultaneous resolution of reactive radioactive decay, non-isothermal flow, and migration with application to the performance assessment for HLW repositories
  7. Modeling of transport of radionuclides in beds of crushed crystalline rocks under equilibrium non-linear sorption isotherm conditions
  8. The inflow of uranium 234U and 238U from the Vistula River catchment area to the Baltic Sea
  9. 63Ni in Chernobyl “ruthenium hot particles” and in forest soil samples
  10. Comments on “Optimization of the decision threshold for single radioactive counting”
  11. Answers to the Sterlinski´s comments
https://doi.org/10.1524/ract.2010.1721
Keywords for this article
Humic substances; Radioiodination; IODO-GENTM; Labeling

Articles in the same Issue

  1. Influence of nitric acid and plutonium concentrations in dissolver solution of mixed oxide fuel on decontamination factors for uranyl nitrate hexahydrate crystal
  2. Gas-phase isothermal chromatography with short-lived technetium isotopes
  3. Coprecipitation of gadolinium with calcium sulphate dihydrate
  4. Radioiodination of humic substances
  5. Sorption of radiocobalt and other activation product radionuclides on titanium oxide material CoTreat®
  6. Simultaneous resolution of reactive radioactive decay, non-isothermal flow, and migration with application to the performance assessment for HLW repositories
  7. Modeling of transport of radionuclides in beds of crushed crystalline rocks under equilibrium non-linear sorption isotherm conditions
  8. The inflow of uranium 234U and 238U from the Vistula River catchment area to the Baltic Sea
  9. 63Ni in Chernobyl “ruthenium hot particles” and in forest soil samples
  10. Comments on “Optimization of the decision threshold for single radioactive counting”
  11. Answers to the Sterlinski´s comments
Downloaded on 10.4.2026 from https://www.degruyterbrill.com/document/doi/10.1524/ract.2010.1721/html
Scroll to top button