I found a lot of information in the link below:

http://lmgtfy.com/?q=film+diffusion+mass+transfer

Thanks a lot..

I suggest you to read original literature:

Glueckauf, E. and Coates, J.I., 1947, J. Chem. Soc., 1308-1314

Glueckauf, E., 1955, Trans. Faraday Soc. 51, 1540-1551

You may also find treatises in textbooks by D. Ruthven, R. Yang or J. Kärger, and in many other books on kinetics in various media and mass transfer processes.

Thank you so much Martin Bulow....