A technique for the sampling and isotopic analysis of micro quantities of water was described. The method was applied to the investigation of oxygen self-diffusion in magnetite using a continuous sampling method. The self-diffusion coefficient of O at 302 to 550 could be expressed as:

D(cm2/s) = 3.2 x 10-14 exp[-17000/RT]

J.E.Castle, P.L.Surman: Journal of Physical Chemistry, 1967, 71[13], 4255-9