engleski

Toxicity assessment of the water from the Sava River using algae, plants and fish

With the rapid expansion of modern society in both industrial and technological aspect, it is becoming rather important to assess the risk of compounds which are released daily in our environment in enormous quantities. For this reason, a broad spectrum of ecotoxicological assays with various model organisms has been developed, in order to assess toxic effects that these compounds might cause. In this study, toxicity of the Sava River has been assessed by using different model organisms with different sensitivities to the various kinds of pollutants and their mixtures: freshwater algae Chlorella vulgaris, clover Trifolium repens, common wheat Triticum aestivum and the zebrafish Danio rerio embryos. Model organisms have been exposed to filtered samples of the Sava River from five different locations (Jesenice, Jankomir, Hrušćica, Rugvica, and Lukavec), with different pollution profiles, which was assessed by chemical analysis of 571 organic pollutants. The use of ecotoxicological bioassays performed on different model organisms, combined with chemical analysis, has provided an accurate toxicity assessment of water from the Sava River, allowing us to define and divide the sampling sites accordingly.

growth inhibition ; chlorophyll a concentration ; germination inhibition ; root elongation ; ZET ; MXR activity

nije evidentirano