**2.2 Current trends in living things exposure monitoring**

Taking into account the requirements imposed by legislation but also by the need of a large number of subjects submitted for study so that to could draw realistic and convincing conclusions induced the need to seek new ways for ecotoxicological evaluation of environmental contaminants.

In an attempt to meet these ideas has emerged and formed a new path in ecotoxicological assessment of chemical pollutants, namely qualitative and quantitative evaluation of chemical contaminants from biological matrices from living beings using noninvasive sampling ways. This new direction in ecotoxicological biomonitoring of environmental contaminants not only allows the monitoring of animal subjects exposed but make also possible to assess the impact of those chemical contaminants on humans that leave in contaminated areas. Also this way of sampling of biological matrix from living beings allows an extension of studied subjects in terms of both as species, age, gender and living environment.
