The diffusion of Pb2+ in purified NaCl was studied at 348 to 553C by using a radiotracer technique. The saturation diffusion coefficient was given by:

D(cm2/s) = 0.0175 exp[-22.8(kcal/mol)/RT]

W.A.Mannion, C.A.Allen, W.J.Fredericks: The Journal of Chemical Physics, 1968, 48[4], 1537-40