Zur Charakterisierung des Gefährdungspotentials von Wasserschadstoffen

The danger potential of chemicals to man and environment is essentially a function of exposure and toxicity. For the exposure of ecological systems there is decisive the distribution of the particular substance in and among the hydro-, pedo-, atmo- and biospheres. Proceeding from statistical relations between different molecular structure parameters and the distribution as well as action of substances, the approximate determination of distribution parameters, sorption coefficients and bioconcentration factors is possible. By means of a discriminant analysis the substances can be assigned to given classes of toxicity and mutagenicity. Proceeding from structure-analogy models, for several substances used as examples the distribution and toxicity parameters are calculated and an evaluation of the danger potential for aquatic ecosystems and man is discussed.