Hyperfiltration-induced fractionation of lithium isotopes in geologic systems. Progress report, April 1, 1992--June 30, 1993
The purpose of this research was to show whether hyperfiltration is an efficient mechanism to fractionate lithium isotopes. This paper reports results of experiments in which freeze-dried, LiCl-saturated bentonite is sedimented onto a chemically inert filter paper fitted to a porous plug. The filter is connected to a syringe pump capable of delivering solution at a precisely controlled flow rate. Deionized water is forced through the membrane to determine its hydraulic conductivity. The deionized water is then changed to 9.411 mN LiCl solution. The {sup 7}Li/{sup 6}Li ratio is measured for the input solution as well as the effluent. The concentration profile for {sup 6}Li and {sup 7}Li can then be computed. These experiments have shown lithium isotope fractionation by hyperfiltration through geologic materials.
- Research Organization:
- Purdue Univ., Lafayette, IN (United States). Dept. of Earth and Atmospheric Sciences
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-90ER14113
- OSTI ID:
- 10105830
- Report Number(s):
- DOE/ER/14113--3; ON: DE94003520; BR: KC0403020
- Country of Publication:
- United States
- Language:
- English
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