Abstract
I HAVE carried out determinations of D2O content in water using the vapour pressure osmometer ‘Mechrolab, Model 301 A’, designed to perform molecular-weight determinations. Briefly, the principle of this instrument is as follows1,2: two thermistors, charged with a drop of solvent and arranged in a d.c. Wheatstone bridge, are at the same temperature in an ambient atmosphere saturated with the vapour of the selected solvent. The bridge is equilibrated, and a drop of a solution of the same solvent is placed on one of the two thermistors (called the sample thermistor). Solvent condenses on this drop of solution until vapour pressure equilibrium is approached, and the temperature of the thermistor increases. Its resistance variation depends on the concentration of the solution and it is determined by rebalancing the bridge.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Neumayer, I. J., Anal. Chim. Acta, 20, 519 (1959).
Wilson, A., Bini, L., and Hofstader, R., Anal. Chem., 33, 135 (1961).
Kirschenbaum, I., Physical Properties and Analysis of Heavy Water (McGraw-Hill, New York, 1951).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
LAZZARINI, E. Rapid Determination of D2O Content in Water using a Vapour Pressure Osmometer. Nature 204, 875–876 (1964). https://doi.org/10.1038/204875a0
Issue Date:
DOI: https://doi.org/10.1038/204875a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
