1987 Volume 36 Issue 4 Pages 163-168
Since deuterium gas is different from hydrogen gas in thermal conductivity, the deuterium quantity of deuterated hydrogen HD can be determined with a thermal conductivity detector.
HD is obtained by the isotopic exchange reaction between heavy water and hydrogen gas by means of a platinum catalyst.
H2 (G) +HDO (L) _??_CatalystHD (G) +H2O (L)
We developed a high activity platinum catalyst.
A simple method for determination of heavy water was achieved by combined use of gas chromatography and platinum catalyst.
After the isotopic reaction between sample heavy water HDO and hydrogen, the generated water is removed by molecular sieve. The deuterium quantity of the generated HD is measured by injecting it into a thermal conductivity detector of gas chromatograph under flowing carrier hydrogen gas, as the chromatogram.
The value of coefficient of variation in the analytical results is less than 3%, and 0-100% heavy water is able to be determined simply and rapidly with good reproducibility.
