Field study of the migration of 90Sr in a weak loess aquifer
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C. L. Liu
Summary
The migration of 90Sr in a weak loess aquifer was investigated in-situ in an Underground Research Facility. Quartz containing 90Sr, 3H and other nuclides was introduced into the aquifer with a stainless steel pipe. The local water flow field in the aquifer was monitored using a 3-dimensional sampling system. The contaminated area of the aquifer was marked out wholly with the help of a pre-installed stainless steel frame and cut into small pieces (samples) 3-dimensionally, and analyzed. The result of the -3year experiment indicated that 90Sr had normal concentration distributions in Y and Z directions. The migration rate of the mass center for 90Sr in X direction was calculated as 3.5×10-5cm/d, the distribution coefficient for 90Sr in the aquifer was calculated as 7.4×102ml/g and the diffusion coefficient for 90Sr in the aquifer in X direction was calculated as 1.3×10-11m2/s.
© 2003 Oldenbourg Wissenschaftsverlag GmbH
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Artikel in diesem Heft
- The influence of ozone on ligand-assisted extraction of 239Pu and 241Am from Rocky Flats soil
- Biosorption of americium-241 by Candida sp.
- Uranium speciation in plants
- A fluorescence spectroscopic study on the speciation of Cm(III) and Eu(III) in the presence of organic chelates in highly basic solutions
- Synthesis and characterization of neptunyl(VI) and plutonyl(VI) orthosilicates
- Determination of uranium(IV) hydrolysis constants and solubility product of UO2·xH2O
- A comparision of the extraction of carrier-free 176,177W and 99Mo with that of U, Th, Am, Cm, La, Ce, Tm, Yb, Lu and Hf into Aliquat 336 in toluene from nitric, phosphoric, and sulphuric acid media
- Field study of the migration of 90Sr in a weak loess aquifer
- Standardisation of the prompt gamma activation analysis method
