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The Solubility and Sorption of Radium and Tin in a Cementitious Near-Field Environment

Published online by Cambridge University Press:  26 February 2011

S Bayliss ,
F. T. Ewart ,
R. M. Howse ,
S. A. Lane ,
N. J. Pilkington ,
J. L. Smith-Briggs  and
S. J. Williams
S Bayliss
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
F. T. Ewart
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
R. M. Howse
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
S. A. Lane
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
N. J. Pilkington
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
J. L. Smith-Briggs
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
S. J. Williams
Affiliation:
Chemistry Division, Harwell Laboratory, UKAEA, Oxfordshire, 0X11 ORA.
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Abstract

The solubility and sorption of radium and tin have been studied for a cementitious near-field environment.

The solubility of radium was observed to be greater than 10−7M, even with the addition of IM sulphate to the cement equilibrated water. The values of Rn for radium varied from 102 to 103 ml g−1 for the cement types and initial radium concentrations studied.

The solubility of tin was observed to be about 10−4M for a range of cement equilibrated waters above tin oxides and metallic tin. The solubility of tin was observed to increase with pH. Tin solubilities were not affected by the redox conditions. Tin was present in a range of particle sizes in the sorption studies. A value of RD of 104 ml g−1 was observed for tin species less than 0.45μm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 127: Symposium BERLIN – Scientific Basis for Nuclear Waste Management XII , 1988 , 879
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

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