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

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Abstract

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.

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Authors and Affiliations

  1. Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India

    S. Kumar, N. Rawat, B. S. Tomar & V. K. Manchanda

  2. Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India

    S. Ramanathan

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  1. S. Kumar
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  2. N. Rawat
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  3. B. S. Tomar
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  4. V. K. Manchanda
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  5. S. Ramanathan
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Correspondence to B. S. Tomar.

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Kumar, S., Rawat, N., Tomar, B.S. et al. Effect of humic acid on the sorption of technetium on hematite colloids using 95mTc and 96Tc as tracers. J Radioanal Nucl Chem 274, 229–231 (2007). https://doi.org/10.1007/s10967-007-1103-3

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  • DOI: https://doi.org/10.1007/s10967-007-1103-3

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