Use of probabilistic methods in exposure assessment in Germany.

Over the last two decades, quantitative risk assessment has received increasing attention in Germany. By now it is also acknowledged that probabilistic techniques in risk assessment seem to be superior to the conventional point estimate approach. An important prerequisite for the use of probabilistic techniques is seen in the provision of 'standard' probability density functions for key exposure factors. For such exposure factors like body weight, time budget, etc., default probability density functions which are representative for Germany need to be developed. Guidance on probabilistic modelling will be needed, too.