Techniques for the assay of tritiated compounds and the measurement of small vapour pressures

Abstract

Several different methods for the gas phase assay of tritium have been investigated and a simple and rapid assay technique has been developed. This method has been used to measure the partial pressure of water in aqueous dioxan solutions at 18°C and at 25°C, in a concentration range where the partial pressures are too low to be readily measured by other methods. Partial excess thermodynamic functions of mixing have been calculated from the pressure measurements.