Emission factors of atmospheric Cd, Pb and Zn for major source categories in Europe during 1950-1985.

Emission factors of Cd, Pb and Zn for various source categories have been reviewed with major aim to assess their changes during the period from the 1950\'s up to 1985. A progress made in developing industrial technologies and emission control techniques has been considered when calculating emission factors applicable for the 1950\'s, 1960\'s, 1970\'s and 1989 and 1985. It was concluded that the atmospheric emissions of Cd, Pb and Zn in Europe peaked in the mid 1970\'s.