Journal of Radioanalytical and Nuclear Chemistry

, Volume 274, Issue 2, pp 229–231 | Cite as

Effect of humic acid on the sorption of technetium on hematite colloids using 95mTc and 96Tc as tracers

  • S. Kumar
  • N. Rawat
  • B. S. Tomar
  • V. K. Manchanda
  • S. Ramanathan


Sorption of technetium on hematite colloids, at varying pH (3–10), has been studied in absence and presence of humic acid using 95mTc-96Tc radiotracers. Technetium was found to be weakly sorbed on hematite at lower pH (<5) values, while no sorption was observed at higher pH values. Humic acid was found to have no effect on the sorption of technetium on hematite under aerobic conditions, while at lower pH values small reduction was observed which was attributed to the reduced zeta potential of the hematite colloids owing to the strong sorption of humic acid.


Humic Acid Hematite Technetium Methyl Ethyl Ketone Molybdenite 
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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • S. Kumar
    • 1
  • N. Rawat
    • 1
  • B. S. Tomar
    • 1
  • V. K. Manchanda
    • 1
  • S. Ramanathan
    • 2
  1. 1.Radiochemistry DivisionBhabha Atomic Research CentreMumbaiIndia
  2. 2.Materials Science DivisionBhabha Atomic Research CentreMumbaiIndia

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