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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:28 |
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Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Determination of the deuterium concentration from heavy water
using vibrational densimetry method
Authors:
Gabriela Raducan, Iuliana Piciorea
Affiliation:
National Research and Development Institute for Cryogenics and Isotopic Technologies, Rm. Valcea, Romania
E-mail
gabi_raducan@yahoo.com
Keywords:
D2O; heavy water; deuterium concentration, vibrational densimeter, uncertainty.
Abstract:
The vibrational densimetry method was used to determin the heavy water density with the deuterium concentration less then 99% D2O mass, and an empirical relationship between heavy water density and the deuterium concentration was determined and verified. The deuterium concentration of heavy water samples was obtained using the gravimetric method. A vibrational densimeter was used to determin the density of the samples. This device is able to bring the sample at a preset temperature. The sample’s density was measured at least 5 times and an average value was computed. The relationship between the deuterium concentration and the heavy water density is assumed to be a nonlinear equation which is of the form y=a-b/x. Building an equations system, the parameters were determined. Also, the uncertainity of the method was estimated. This value is too high compared with the uncertainity estimated with the IR spectroscopy method, so we can’t use this method in the range of deuterium concentrations higher than 99% D2O mass, where it is necessary a very good measurement accuracy.
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