| quality of water types in ukraine evaluated by watertox bioassays. | the quality of river, ground-, and tap water was analyzed using the basic set of watertox bioassays [daphnia (daphnia magna), hydra (hydra attenuata), and lettuce (lactuca sativa)] as well as two additional bioassays, onion (allium cepa) and microalga (selenastrum gracile). samples of these waters were also concentrated fivefold using a solid-phase procedure. the results of the daphnia and hydra bioassays showed that the winter and spring concentrated and nonconcentrated samples from the dnieper ... | 2002 | 12112633 |