Isotope effects in water. Tracer diffusion coefficients for H/sub 2/ /sup 18/O in ordinary water

Journal Article · Thu Nov 22 00:00:00 EST 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150668a065· OSTI ID:5911863

Easteal, A J; Edge, A V.J.; Woolf, L A

A method is described for measuring the tracer diffusion coefficient of H/sub 2/ /sup 18/O in ordinary water. The method combines the conventional diaphragm cell technique with isotope ratio mass-spectrometric determination of tracer concentrations and gives diffusion coefficients of very high precision. The accuracy of the method is limited only by the accuracy of calibration of diaphragm cells and is such that the isotope effect for water diffusion has been measured precisely. Results are presented for temperatures from 278 to 323 K at 0.1 MPa, and for pressures up to 262.5 MPa at 323 K.

• Research Organization: Australian National Univ., Canberra
• OSTI ID: 5911863
• Journal Information: J. Phys. Chem.; (United States), Vol. 88:24
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
OXYGEN 18
ISOTOPE EFFECTS
WATER
DIFFUSION
EXPERIMENTAL DATA
PRESSURE EFFECTS
TEMPERATURE EFFECTS
TRACER TECHNIQUES
DATA
EVEN-EVEN NUCLEI
HYDROGEN COMPOUNDS
INFORMATION
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
STABLE ISOTOPES
400202* - Isotope Effects
Isotope Exchange
& Isotope Separation