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Partition coefficient of Ra in gypsum
- Source :
- Journal of Radioanalytical and Nuclear Chemistry. 280:541-545
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- A partition coefficient (λ) for Ra in gypsum was determined from coprecipitation experiment using oversaturation method. The λ-value derived for Ra was: λRa = 0.32±0.15. Saturation state was estimated with the initial concentration of Ca and SO42− in an experiment of the present study. Saturation index was calculated to be (0.49±0.02). This value was similar to those corresponds to analogous case where slow precipitation rate was kept in coprecipitation experiment for Sr in gypsum. Therefore, derived λ-value is thought to describe partition of Ra and Ca in solid phase and solution under an equilibrium condition without the effect of kinetic of precipitation. Determined λ-value was compared with those of other alkaline elements in sulfate minerals. The derived λ-value is smaller than that of Ra in barite and is similar to those of Sr in gypsum. This trend agrees with mechanical understanding for the size effect against partition coefficient.
- Subjects :
- Gypsum
Chemistry
Coprecipitation
Health, Toxicology and Mutagenesis
Public Health, Environmental and Occupational Health
Analytical chemistry
Mineralogy
engineering.material
Kinetic energy
Pollution
Analytical Chemistry
Saturation index
Partition coefficient
Nuclear Energy and Engineering
engineering
Partition (number theory)
Sulfate minerals
Radiology, Nuclear Medicine and imaging
Spectroscopy
Subjects
Details
- ISSN :
- 15882780 and 02365731
- Volume :
- 280
- Database :
- OpenAIRE
- Journal :
- Journal of Radioanalytical and Nuclear Chemistry
- Accession number :
- edsair.doi...........0db03c83ca48b74b302145b2027de39f
- Full Text :
- https://doi.org/10.1007/s10967-009-7470-1